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Database: PDB
Entry: 2C6K
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HEADER    TRANSFERASE                             10-NOV-05   2C6K              
TITLE     CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE                
TITLE    2 TRIAZOLOPYRIMIDINE INHIBITOR                                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CELL DIVISION PROTEIN KINASE 2;                            
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: P33 PROTEIN KINASE;                                         
COMPND   5 EC: 2.7.1.37;                                                        
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA;                            
SOURCE   6 EXPRESSION_SYSTEM_COMMON: FALL ARMYWORM;                             
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 7108;                                       
SOURCE   8 EXPRESSION_SYSTEM_CELL_LINE: SF21;                                   
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: BACULOVIRUS                           
KEYWDS    TRANSFERASE, SERINE/THREONINE PROTEIN KINASE, CDK2, ATP-BINDING, CELL 
KEYWDS   2 CYCLE, MITOSIS, PHOSPHORYLATION, TRIAZOLOPYRIMIDINE INHIBITOR, CELL  
KEYWDS   3 DIVISION, KINASE, POLYMORPHISM, NUCLEOTIDE-BINDING                   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    C.M.RICHARDSON,P.DOKURNO,J.B.MURRAY,A.E.SURGENOR                      
REVDAT   6   24-APR-19 2C6K    1       SOURCE                                   
REVDAT   5   30-JAN-19 2C6K    1       REMARK                                   
REVDAT   4   14-OCT-15 2C6K    1       SOURCE REMARK VERSN  FORMUL              
REVDAT   3   24-FEB-09 2C6K    1       VERSN                                    
REVDAT   2   01-FEB-06 2C6K    1       JRNL                                     
REVDAT   1   07-DEC-05 2C6K    0                                                
JRNL        AUTH   C.M.RICHARDSON,D.S.WILLIAMSON,M.J.PARRATT,J.BORGOGNONI,      
JRNL        AUTH 2 A.D.CANSFIELD,P.DOKURNO,G.L.FRANCIS,R.HOWES,J.D.MOORE,       
JRNL        AUTH 3 J.B.MURRAY,A.ROBERTSON,A.E.SURGENOR,C.J.TORRANCE             
JRNL        TITL   TRIAZOLO[1,5-A]PYRIMIDINES AS NOVEL CDK2 INHIBITORS: PROTEIN 
JRNL        TITL 2 STRUCTURE-GUIDED DESIGN AND SAR.                             
JRNL        REF    BIOORG.MED.CHEM.LETT.         V.  16  1353 2006              
JRNL        REFN                   ISSN 0960-894X                               
JRNL        PMID   16325401                                                     
JRNL        DOI    10.1016/J.BMCL.2005.11.048                                   
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.90 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.1.24                                        
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 15.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 20337                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.189                           
REMARK   3   R VALUE            (WORKING SET) : 0.183                           
REMARK   3   FREE R VALUE                     : 0.254                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 8.400                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1858                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.90                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.95                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1317                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2660                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 96                           
REMARK   3   BIN FREE R VALUE                    : 0.3190                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2345                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 27                                      
REMARK   3   SOLVENT ATOMS            : 305                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 29.94                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.86000                                              
REMARK   3    B22 (A**2) : -0.85000                                             
REMARK   3    B33 (A**2) : -0.01000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.190         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.181         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.128         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 4.451         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.957                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.921                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2436 ; 0.015 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  3308 ; 1.488 ; 1.951       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   290 ; 5.863 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   371 ; 0.262 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1814 ; 0.006 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  1259 ; 0.219 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   240 ; 0.183 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    53 ; 0.174 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    40 ; 0.192 ; 0.200       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  1463 ; 0.884 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2376 ; 1.590 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   973 ; 2.228 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   932 ; 3.438 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS.                                                          
REMARK   4                                                                      
REMARK   4 2C6K COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 10-NOV-05.                  
REMARK 100 THE DEPOSITION ID IS D_1290026329.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-MAY-03                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 7.20                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RUH3R                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : MSC OSMIC BLUE                     
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU MSC                         
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : CRYSTALCLEAR                       
REMARK 200  DATA SCALING SOFTWARE          : D*TREK                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 22289                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.900                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.7                               
REMARK 200  DATA REDUNDANCY                : 4.450                              
REMARK 200  R MERGE                    (I) : 0.06000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 11.1000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.97                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 88.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.72                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.31000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: PDB ENTRY 1B39                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 39.30                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.00                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG3350, HEPES PH7.2, AMMONIUM           
REMARK 280  ACETATE, VAPOR DIFFUSION HANGING DROP, ROOM TEMPERATURE, PH 7.20,   
REMARK 280  VAPOR DIFFUSION, HANGING DROP                                       
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       26.77500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       36.13100            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       35.81650            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       36.13100            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       26.77500            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       35.81650            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 INVOLVED IN THE CONTROL OF THE CELL CYCLE.                           
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     ASP A    38                                                      
REMARK 465     THR A    39                                                      
REMARK 465     GLU A    40                                                      
REMARK 465     THR A    41                                                      
REMARK 465     GLU A    42                                                      
REMARK 465     GLY A    43                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ARG A  36    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     LEU A  37    CG   CD1  CD2                                       
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   OG1  THR A   160     OE1  GLU A   162              2.00            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ASP A  92   CB  -  CG  -  OD2 ANGL. DEV. =   6.2 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    GLU A   8      147.75   -170.23                                   
REMARK 500    GLU A  81      131.09    -39.68                                   
REMARK 500    ARG A 126      -14.52     83.19                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DT2 A 1299                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1AQ1   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR         
REMARK 900 STAUROSPORINE                                                        
REMARK 900 RELATED ID: 1B38   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN-DEPENDENT KINASE 2                                      
REMARK 900 RELATED ID: 1B39   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN-DEPENDENT KINASE 2 PHOSPHORYLATED ON THR 160            
REMARK 900 RELATED ID: 1BUH   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 KINASE COMPLEX WITHCELL CYCLE-   
REMARK 900 REGULATORY PROTEIN CKSHS1                                            
REMARK 900 RELATED ID: 1CKP   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR         
REMARK 900 PURVALANOL B                                                         
REMARK 900 RELATED ID: 1DI8   RELATED DB: PDB                                   
REMARK 900 THE STRUCTURE OF CYCLIN-DEPENDENT KINASE 2 (CDK2) IN COMPLEX WITH 4- 
REMARK 900 [3- HYDROXYANILINO]-6,7-DIMETHOXYQUINAZOLINE                         
REMARK 900 RELATED ID: 1DM2   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN-DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR         
REMARK 900 HYMENIALDISINE                                                       
REMARK 900 RELATED ID: 1E1V   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR NU2058  
REMARK 900 RELATED ID: 1E1X   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR NU6027  
REMARK 900 RELATED ID: 1E9H   RELATED DB: PDB                                   
REMARK 900 THR 160 PHOSPHORYLATED CDK2 - HUMAN CYCLIN A3 COMPLEX WITH THE       
REMARK 900 INHIBITOR INDIRUBIN-5- SULPHONATE BOUND                              
REMARK 900 RELATED ID: 1F5Q   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF MURINE GAMMA HERPESVIRUS CYCLIN COMPLEXED TO    
REMARK 900 HUMAN CYCLIN DEPENDANT KINASE 2                                      
REMARK 900 RELATED ID: 1FIN   RELATED DB: PDB                                   
REMARK 900 CYCLIN A - CYCLIN-DEPENDENT KINASE 2 COMPLEX                         
REMARK 900 RELATED ID: 1FQ1   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF KINASE ASSOCIATED PHOSPHATASE (KAP) INCOMPLEX   
REMARK 900 WITH PHOSPHO-CDK2                                                    
REMARK 900 RELATED ID: 1FVT   RELATED DB: PDB                                   
REMARK 900 THE STRUCTURE OF CYCLIN-DEPENDENT KINASE 2 (CDK2) INCOMPLEX WITH AN  
REMARK 900 OXINDOLE INHIBITOR                                                   
REMARK 900 RELATED ID: 1FVV   RELATED DB: PDB                                   
REMARK 900 THE STRUCTURE OF CDK2/CYCLIN A IN COMPLEX WITH AN OXINDOLEINHIBITOR  
REMARK 900 RELATED ID: 1G5S   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF HUMAN CYCLIN DEPENDENT KINASE 2 (CDK2)IN        
REMARK 900 COMPLEX WITH THE INHIBITOR H717                                      
REMARK 900 RELATED ID: 1GIH   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE CDK4INHIBITOR     
REMARK 900 RELATED ID: 1GII   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE CDK4INHIBITOR     
REMARK 900 RELATED ID: 1GIJ   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE CDK4INHIBITOR     
REMARK 900 RELATED ID: 1GY3   RELATED DB: PDB                                   
REMARK 900 PCDK2/CYCLIN A IN COMPLEX WITH MGADP, NITRATE AND PEPTIDE SUBSTRATE  
REMARK 900 RELATED ID: 1GZ8   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR 2-      
REMARK 900 AMINO-6-(3'-METHYL- 2'-OXO)BUTOXYPURINE                              
REMARK 900 RELATED ID: 1H00   RELATED DB: PDB                                   
REMARK 900 CDK2 IN COMPLEX WITH A DISUBSTITUTED 4, 6 -BIS ANILINO PYRIMIDINE    
REMARK 900 CDK4 INHIBITOR                                                       
REMARK 900 RELATED ID: 1H01   RELATED DB: PDB                                   
REMARK 900 CDK2 IN COMPLEX WITH A DISUBSTITUTED 2, 4 -BIS ANILINO PYRIMIDINE    
REMARK 900 CDK4 INHIBITOR                                                       
REMARK 900 RELATED ID: 1H07   RELATED DB: PDB                                   
REMARK 900 CDK2 IN COMPLEX WITH A DISUBSTITUTED 4, 6 -BIS ANILINO PYRIMIDINE    
REMARK 900 CDK4 INHIBITOR                                                       
REMARK 900 RELATED ID: 1H08   RELATED DB: PDB                                   
REMARK 900 CDK2 IN COMPLEX WITH A DISUBSTITUTED 2, 4 -BIS ANILINO PYRIMIDINE    
REMARK 900 CDK4 INHIBITOR                                                       
REMARK 900 RELATED ID: 1H0V   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT PROTEIN KINASE 2 IN COMPLEX WITH THE          
REMARK 900 INHIBITOR 2-AMINO-6-[(R )-PYRROLIDINO-5'-YL]METHOXYPURINE            
REMARK 900 RELATED ID: 1H0W   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT PROTEIN KINASE 2 IN COMPLEX WITH THE          
REMARK 900 INHIBITOR 2-AMINO-6-[ CYCLOHEX-3-ENYL]METHOXYPURINE                  
REMARK 900 RELATED ID: 1H1P   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH THE  
REMARK 900 INHIBITOR NU2058                                                     
REMARK 900 RELATED ID: 1H1Q   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH THE  
REMARK 900 INHIBITOR NU6094                                                     
REMARK 900 RELATED ID: 1H1R   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH THE  
REMARK 900 INHIBITOR NU6086                                                     
REMARK 900 RELATED ID: 1H1S   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH THE  
REMARK 900 INHIBITOR NU6102                                                     
REMARK 900 RELATED ID: 1H24   RELATED DB: PDB                                   
REMARK 900 CDK2/CYCLINA IN COMPLEX WITH A 9 RESIDUE RECRUITMENT PEPTIDE FROM    
REMARK 900 E2F                                                                  
REMARK 900 RELATED ID: 1H25   RELATED DB: PDB                                   
REMARK 900 CDK2/CYCLINA IN COMPLEX WITH AN 11-RESIDUE RECRUITMENT PEPTIDE FROM  
REMARK 900 E2F                                                                  
REMARK 900 RELATED ID: 1H26   RELATED DB: PDB                                   
REMARK 900 CDK2/CYCLINA IN COMPLEX WITH AN 11-RESIDUE RECRUITMENT PEPTIDE FROM  
REMARK 900 P53                                                                  
REMARK 900 RELATED ID: 1H27   RELATED DB: PDB                                   
REMARK 900 CDK2/CYCLINA IN COMPLEX WITH AN 11-RESIDUE RECRUITMENT PEPTIDE FROM  
REMARK 900 P27                                                                  
REMARK 900 RELATED ID: 1H28   RELATED DB: PDB                                   
REMARK 900 CDK2/CYCLINA IN COMPLEX WITH AN 11-RESIDUE RECRUITMENT PEPTIDE FROM  
REMARK 900 P107                                                                 
REMARK 900 RELATED ID: 1HCK   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN-DEPENDENT KINASE 2                                      
REMARK 900 RELATED ID: 1HCL   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN-DEPENDENT KINASE 2                                      
REMARK 900 RELATED ID: 1JST   RELATED DB: PDB                                   
REMARK 900 PHOSPHORYLATED CYCLIN-DEPENDENT KINASE-2 BOUND TO CYCLIN A           
REMARK 900 RELATED ID: 1JSU   RELATED DB: PDB                                   
REMARK 900 P27(KIP1)/CYCLIN A/CDK2 COMPLEX                                      
REMARK 900 RELATED ID: 1JSV   RELATED DB: PDB                                   
REMARK 900 THE STRUCTURE OF CYCLIN-DEPENDENT KINASE 2 (CDK2) INCOMPLEX WITH 4-  
REMARK 900 [(6-AMINO-4- PYRIMIDINYL)AMINO]BENZENESULFONAMIDE                    
REMARK 900 RELATED ID: 1JVP   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF HUMAN CDK2 ( UNPHOSPHORYLATED) INCOMPLEX WITH   
REMARK 900 PKF049-365                                                           
REMARK 900 RELATED ID: 1KE5   RELATED DB: PDB                                   
REMARK 900 CDK2 COMPLEXED WITH N-METHYL-4-{[(2-OXO- 1,2-DIHYDRO-3H-INDOL-3-     
REMARK 900 YLIDENE)METHYL] AMINO}BENZENESULFONAMIDE                             
REMARK 900 RELATED ID: 1KE6   RELATED DB: PDB                                   
REMARK 900 CYCLIN-DEPENDENT KINASE 2 (CDK2) COMPLEXED WITH N-METHYL-{4-[2-(7-   
REMARK 900 OXO-6,7-DIHYDRO -8H-[1,3]THIAZOLO[5,4-E]INDOL-8- YLIDENE)HYDRAZINO]  
REMARK 900 PHENYL}METHANESULFONAMIDE                                            
REMARK 900 RELATED ID: 1KE7   RELATED DB: PDB                                   
REMARK 900 CYCLIN-DEPENDENT KINASE 2 (CDK2) COMPLEXED WITH 3-{[(2,2-DIOXIDO-1,  
REMARK 900 3-DIHYDRO-2- BENZOTHIEN-5-YL)AMINO]METHYLENE}-5-(1,3- OXAZOL-5-YL)-  
REMARK 900 1,3-DIHYDRO-2H-INDOL-2- ONE                                          
REMARK 900 RELATED ID: 1KE8   RELATED DB: PDB                                   
REMARK 900 CYCLIN-DEPENDENT KINASE 2 (CDK2) COMPLEXED WITH 4-{[(2-OXO-1,2-      
REMARK 900 DIHYDRO-3H-INDOL-3 -YLIDENE)METHYL]AMINO}-N-(1,3-THIAZOL-2- YL)      
REMARK 900 BENZENESULFONAMIDE                                                   
REMARK 900 RELATED ID: 1KE9   RELATED DB: PDB                                   
REMARK 900 CYCLIN-DEPENDENT KINASE 2 (CDK2) COMPLEXED WITH 3-{[4-({             
REMARK 900 [AMINO(IMINO)METHYL] AMINOSULFONYL)ANILINO]METHYLENE}-2-OXO-2,3-     
REMARK 900 DIHYDRO-1H-INDOLE                                                    
REMARK 900 RELATED ID: 1OGU   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH A 2- 
REMARK 900 ARYLAMINO-4- CYCLOHEXYLMETHYL-5-NITROSO-6-AMINOPYRIMIDINE INHIBITOR  
REMARK 900 RELATED ID: 1OI9   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH A 6- 
REMARK 900 CYCLOHEXYLMETHYLOXY-2-ANILINO-PURINE INHIBITOR                       
REMARK 900 RELATED ID: 1OIQ   RELATED DB: PDB                                   
REMARK 900 IMIDAZOPYRIDINES: A POTENT AND SELECTIVE CLASS OF CYCLIN-DEPENDENT   
REMARK 900 KINASE INHIBITORS IDENTIFIED THROUGH STRUCTURE-BASED HYBRIDISATION   
REMARK 900 RELATED ID: 1OIR   RELATED DB: PDB                                   
REMARK 900 IMIDAZOPYRIDINES: A POTENT AND SELECTIVE CLASS OF CYCLIN-DEPENDENT   
REMARK 900 KINASE INHIBITORS IDENTIFIED THROUGH STRUCTURE-BASED HYBRIDISATION   
REMARK 900 RELATED ID: 1OIT   RELATED DB: PDB                                   
REMARK 900 IMIDAZOPYRIDINES: A POTENT AND SELECTIVE CLASS OF CYCLIN-DEPENDENT   
REMARK 900 KINASE INHIBITORS IDENTIFIED THROUGH STRUCTURE-BASED HYBRIDISATION   
REMARK 900 RELATED ID: 1OIU   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH A 6- 
REMARK 900 CYCLOHEXYLMETHYLOXY-2-ANILINO-PURINE INHIBITOR                       
REMARK 900 RELATED ID: 1OIY   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN THR160-PHOSPHO CDK2/ CYCLIN A COMPLEXED WITH A 6- 
REMARK 900 CYCLOHEXYLMETHYLOXY-2-ANILINO-PURINE INHIBITOR                       
REMARK 900 RELATED ID: 1OKU   RELATED DB: PDB                                   
REMARK 900 CYCLIN A BINDING GROOVE INHIBITOR H-ALA- ALA-ABU-ARG-ER-LEU-ILE-(P-  
REMARK 900 F-PHE)-NH2                                                           
REMARK 900 RELATED ID: 1OKV   RELATED DB: PDB                                   
REMARK 900 CYCLIN A BINDING GROOVE INHIBITOR H-ARG- ARG-LEU-ILE-PHE-NH2         
REMARK 900 RELATED ID: 1OKW   RELATED DB: PDB                                   
REMARK 900 CYCLIN A BINDING GROOVE INHIBITOR AC-ARG- ARG-LEU-ASN-(M-CL-PHE)-NH2 
REMARK 900 RELATED ID: 1OL1   RELATED DB: PDB                                   
REMARK 900 CYCLIN A BINDING GROOVE INHIBITOR H-CIT- CIT-LEU-ILE-(P-F-PHE)-NH2   
REMARK 900 RELATED ID: 1OL2   RELATED DB: PDB                                   
REMARK 900 CYCLIN A BINDING GROOVE INHIBITOR H-ARG- ARG-LEU-ASN-(P-F-PHE)-NH2   
REMARK 900 RELATED ID: 1P2A   RELATED DB: PDB                                   
REMARK 900 THE STRUCTURE OF CYCLIN DEPENDENT KINASE 2 (CKD2) WITH               
REMARK 900 ATRISUBSTITUTED NAPHTHOSTYRIL INHIBITOR                              
REMARK 900 RELATED ID: 1P5E   RELATED DB: PDB                                   
REMARK 900 THE STRUCURE OF PHOSPHO-CDK2/CYCLIN A IN COMPLEX WITH THEINHIBITOR   
REMARK 900 4,5,6,7- TETRABROMOBENZOTRIAZOLE (TBS)                               
REMARK 900 RELATED ID: 1PF8   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF HUMAN CYCLIN-DEPENDENT KINASE 2COMPLEXED WITH   
REMARK 900 A NUCLEOSIDE INHIBITOR                                               
REMARK 900 RELATED ID: 1PKD   RELATED DB: PDB                                   
REMARK 900 THE CRYSTAL STRUCTURE OF UCN-01 IN COMPLEX WITH PHOSPHO-CDK2/CYCLIN  
REMARK 900 A                                                                    
REMARK 900 RELATED ID: 1PW2   RELATED DB: PDB                                   
REMARK 900 APO STRUCTURE OF HUMAN CYCLIN-DEPENDENT KINASE 2                     
REMARK 900 RELATED ID: 1PXI   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR 4-(2,5-  
REMARK 900 DICHLORO-THIOPHEN- 3-YL)-PYRIMIDIN-2-YLAMINE                         
REMARK 900 RELATED ID: 1PXJ   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR 4-(2,4-  
REMARK 900 DIMETHYL-THIAZOL- 5-YL)-PYRIMIDIN-2-YLAMINE                          
REMARK 900 RELATED ID: 1PXK   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR N-[4-(2, 
REMARK 900 4-DIMETHYL- THIAZOL-5-YL)PYRIMIDIN-2-YL]-N'- HYDROXYIMINOFORMAMIDE   
REMARK 900 RELATED ID: 1PXL   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR [4-(2,4- 
REMARK 900 DIMETHYL-THIAZOL- 5-YL)-PYRIMIDIN-2-YL]-(4-TRIFLUOROMETHYL- PHENYL)- 
REMARK 900 AMINE                                                                
REMARK 900 RELATED ID: 1PXM   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR 3-[4-(2, 
REMARK 900 4-DIMETHYL- THIAZOL-5-YL)-PYRIMIDIN-2-YLAMINO]-PHENOL                
REMARK 900 RELATED ID: 1PXN   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR 4-[4-(4- 
REMARK 900 METHYL-2- METHYLAMINO-THIAZOL-5-YL)-PYRIMIDIN-2- YLAMINO]-PHENOL     
REMARK 900 RELATED ID: 1PXO   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR [4-(2-   
REMARK 900 AMINO-4-METHYL- THIAZOL-5-YL)-PYRIMIDIN-2-YL]-(3-NITRO- PHENYL)-     
REMARK 900 AMINE                                                                
REMARK 900 RELATED ID: 1PXP   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THEINHIBITOR N-[4-(2, 
REMARK 900 4-DIMETHYL- THIAZOL-5-YL)-PYRIMIDIN-2-YL]-N',N'- DIMETHYL-BENZENE-1, 
REMARK 900 4-DIAMINE                                                            
REMARK 900 RELATED ID: 1PYE   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF CDK2 WITH INHIBITOR                             
REMARK 900 RELATED ID: 1QMZ   RELATED DB: PDB                                   
REMARK 900 PHOSPHORYLATED CDK2-CYCLYIN A-SUBSTRATE PEPTIDE COMPLEX              
REMARK 900 RELATED ID: 1R78   RELATED DB: PDB                                   
REMARK 900 CDK2 COMPLEX WITH A 4-ALKYNYL OXINDOLE INHIBITOR                     
REMARK 900 RELATED ID: 1URC   RELATED DB: PDB                                   
REMARK 900 CYCLIN A BINDING GROOVE INHIBITOR H-ARG- ARG-LEU-ASN-(P-F-PHE)-NH2   
REMARK 900 RELATED ID: 1URW   RELATED DB: PDB                                   
REMARK 900 CDK2 IN COMPLEX WITH AN IMIDAZO[1,2-B] PYRIDAZINE                    
REMARK 900 RELATED ID: 1V1K   RELATED DB: PDB                                   
REMARK 900 CDK2 IN COMPLEX WITH A DISUBSTITUTED 4, 6 -BIS ANILINO PYRIMIDINE    
REMARK 900 CDK4 INHIBITOR                                                       
REMARK 900 RELATED ID: 1VYW   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF CDK2/CYCLIN A WITH PNU-292137                           
REMARK 900 RELATED ID: 1VYZ   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF CDK2 COMPLEXED WITH PNU-181227                          
REMARK 900 RELATED ID: 1W0X   RELATED DB: PDB                                   
REMARK 900 CRYSTALS STRUCTURE OF HUMAN CDK2 IN COMPLEX WITH THE INHIBITOR       
REMARK 900 OLOMOUCINE.                                                          
REMARK 900 RELATED ID: 1W8C   RELATED DB: PDB                                   
REMARK 900 CO-CRYSTAL STRUCTURE OF 6-CYCLOHEXYLMETHOXY- 8-ISOPROPYL-9H-PURIN-2- 
REMARK 900 YLAMINE AND MONOMERIC CDK2                                           
REMARK 900 RELATED ID: 1W98   RELATED DB: PDB                                   
REMARK 900 THE STRUCTURAL BASIS OF CDK2 ACTIVATION BY CYCLIN E                  
REMARK 900 RELATED ID: 1WCC   RELATED DB: PDB                                   
REMARK 900 SCREENING FOR FRAGMENT BINDING BY X-RAY CRYSTALLOGRAPHY              
REMARK 900 RELATED ID: 1Y8Y   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF HUMAN CDK2 COMPLEXED WITH A PYRAZOLO[1,5-A]     
REMARK 900 PYRIMIDINE INHIBITOR                                                 
REMARK 900 RELATED ID: 1Y91   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF HUMAN CDK2 COMPLEXED WITH A PYRAZOLO[1,5-A]     
REMARK 900 PYRIMIDINE INHIBITOR                                                 
REMARK 900 RELATED ID: 2B52   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 (CDK2) COMPLEXED WITH DPH-042562     
REMARK 900 RELATED ID: 2B53   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 (CDK2) COMPLEXED WITH DIN-234325     
REMARK 900 RELATED ID: 2B54   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 (CKD2) COMPLEXED WITH DIN-232305     
REMARK 900 RELATED ID: 2B55   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT KINASE 2 (CDK2) COMPLEXED WITHINDENOPYRAXOLE  
REMARK 900 DIN-101312                                                           
REMARK 900 RELATED ID: 2BHE   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT PROTEIN KINASE 2 IN COMPLEX WITH THE          
REMARK 900 INHIBITOR 5-BROMO- INDIRUBINE                                        
REMARK 900 RELATED ID: 2BHH   RELATED DB: PDB                                   
REMARK 900 HUMAN CYCLIN DEPENDENT PROTEIN KINASE 2 IN COMPLEX WITH THE          
REMARK 900 INHIBITOR 4- HYDROXYPIPERINDINESULFONYL-INDIRUBINE                   
REMARK 900 RELATED ID: 2BKZ   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF CDK2-CYCLIN A WITH PHA-404611                           
REMARK 900 RELATED ID: 2BPM   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF CDK2-CYCLIN A WITH PHA-630529                           
REMARK 900 RELATED ID: 2BTR   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF CDK2 COMPLEXED WITH PNU-198873                          
REMARK 900 RELATED ID: 2BTS   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF CDK2 COMPLEXED WITH PNU-230032                          
REMARK 900 RELATED ID: 2C4G   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF CDK2-CYCLIN A WITH PHA-533514                           
REMARK 900 RELATED ID: 2C5N   RELATED DB: PDB                                   
REMARK 900 DIFFERENTIAL BINDING OF INHIBITORS TO ACTIVE AND INACTIVE CDK2       
REMARK 900 PROVIDES INSIGHTS FOR DRUG DESIGN                                    
REMARK 900 RELATED ID: 2C5O   RELATED DB: PDB                                   
REMARK 900 DIFFERENTIAL BINDING OF INHIBITORS TO ACTIVE AND INACTIVE CDK2       
REMARK 900 PROVIDES INSIGHTS FOR DRUG DESIGN                                    
REMARK 900 RELATED ID: 2C5P   RELATED DB: PDB                                   
REMARK 900 DIFFERENTIAL BINDING OF INHIBITORS TO ACTIVE AND INACTIVE CDK2       
REMARK 900 PROVIDES INSIGHTS FOR DRUG DESIGN                                    
REMARK 900 RELATED ID: 2C5T   RELATED DB: PDB                                   
REMARK 900 DIFFERENTIAL BINDING OF INHIBITORS TO ACTIVE AND INACTIVE CDK2       
REMARK 900 PROVIDES INSIGHTS FOR DRUG DESIGN                                    
REMARK 900 RELATED ID: 2C5V   RELATED DB: PDB                                   
REMARK 900 DIFFERENTIAL BINDING OF INHIBITORS TO ACTIVE AND INACTIVE CDK2       
REMARK 900 PROVIDES INSIGHTS FOR DRUG DESIGN                                    
REMARK 900 RELATED ID: 2C5X   RELATED DB: PDB                                   
REMARK 900 DIFFERENTIAL BINDING OF INHIBITORS TO ACTIVE AND INACTIVE CDK2       
REMARK 900 PROVIDES INSIGHTS FOR DRUG DESIGN                                    
REMARK 900 RELATED ID: 2C5Y   RELATED DB: PDB                                   
REMARK 900 DIFFERENTIAL BINDING OF INHIBITORS TO ACTIVE AND INACTIVE CDK2       
REMARK 900 PROVIDES INSIGHTS FOR DRUG DESIGN                                    
REMARK 900 RELATED ID: 2C68   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE               
REMARK 900 TRIAZOLOPYRIMIDINE INHIBITOR                                         
REMARK 900 RELATED ID: 2C69   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE               
REMARK 900 TRIAZOLOPYRIMIDINE INHIBITOR                                         
REMARK 900 RELATED ID: 2C6I   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE               
REMARK 900 TRIAZOLOPYRIMIDINE INHIBITOR                                         
REMARK 900 RELATED ID: 2C6L   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE               
REMARK 900 TRIAZOLOPYRIMIDINE INHIBITOR                                         
REMARK 900 RELATED ID: 2C6M   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE               
REMARK 900 TRIAZOLOPYRIMIDINE INHIBITOR                                         
REMARK 900 RELATED ID: 2C6O   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE               
REMARK 900 TRIAZOLOPYRIMIDINE INHIBITOR                                         
REMARK 900 RELATED ID: 2C6T   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE HUMAN CDK2 COMPLEXED WITH THE               
REMARK 900 TRIAZOLOPYRIMIDINE INHIBITOR                                         
DBREF  2C6K A    1   298  UNP    P24941   CDK2_HUMAN       1    298             
SEQRES   1 A  298  MET GLU ASN PHE GLN LYS VAL GLU LYS ILE GLY GLU GLY          
SEQRES   2 A  298  THR TYR GLY VAL VAL TYR LYS ALA ARG ASN LYS LEU THR          
SEQRES   3 A  298  GLY GLU VAL VAL ALA LEU LYS LYS ILE ARG LEU ASP THR          
SEQRES   4 A  298  GLU THR GLU GLY VAL PRO SER THR ALA ILE ARG GLU ILE          
SEQRES   5 A  298  SER LEU LEU LYS GLU LEU ASN HIS PRO ASN ILE VAL LYS          
SEQRES   6 A  298  LEU LEU ASP VAL ILE HIS THR GLU ASN LYS LEU TYR LEU          
SEQRES   7 A  298  VAL PHE GLU PHE LEU HIS GLN ASP LEU LYS LYS PHE MET          
SEQRES   8 A  298  ASP ALA SER ALA LEU THR GLY ILE PRO LEU PRO LEU ILE          
SEQRES   9 A  298  LYS SER TYR LEU PHE GLN LEU LEU GLN GLY LEU ALA PHE          
SEQRES  10 A  298  CYS HIS SER HIS ARG VAL LEU HIS ARG ASP LEU LYS PRO          
SEQRES  11 A  298  GLN ASN LEU LEU ILE ASN THR GLU GLY ALA ILE LYS LEU          
SEQRES  12 A  298  ALA ASP PHE GLY LEU ALA ARG ALA PHE GLY VAL PRO VAL          
SEQRES  13 A  298  ARG THR TYR THR HIS GLU VAL VAL THR LEU TRP TYR ARG          
SEQRES  14 A  298  ALA PRO GLU ILE LEU LEU GLY CYS LYS TYR TYR SER THR          
SEQRES  15 A  298  ALA VAL ASP ILE TRP SER LEU GLY CYS ILE PHE ALA GLU          
SEQRES  16 A  298  MET VAL THR ARG ARG ALA LEU PHE PRO GLY ASP SER GLU          
SEQRES  17 A  298  ILE ASP GLN LEU PHE ARG ILE PHE ARG THR LEU GLY THR          
SEQRES  18 A  298  PRO ASP GLU VAL VAL TRP PRO GLY VAL THR SER MET PRO          
SEQRES  19 A  298  ASP TYR LYS PRO SER PHE PRO LYS TRP ALA ARG GLN ASP          
SEQRES  20 A  298  PHE SER LYS VAL VAL PRO PRO LEU ASP GLU ASP GLY ARG          
SEQRES  21 A  298  SER LEU LEU SER GLN MET LEU HIS TYR ASP PRO ASN LYS          
SEQRES  22 A  298  ARG ILE SER ALA LYS ALA ALA LEU ALA HIS PRO PHE PHE          
SEQRES  23 A  298  GLN ASP VAL THR LYS PRO VAL PRO HIS LEU ARG LEU              
HET    DT2  A1299      27                                                       
HETNAM     DT2 4-{[5-(CYCLOHEXYLAMINO)[1,2,4]TRIAZOLO[1,5-A]PYRIMIDIN-          
HETNAM   2 DT2  7-YL]AMINO}BENZENESULFONAMIDE                                   
FORMUL   2  DT2    C17 H21 N7 O2 S                                              
FORMUL   3  HOH   *305(H2 O)                                                    
HELIX    1   1 PRO A   45  LYS A   56  1                                  12    
HELIX    2   2 LEU A   87  SER A   94  1                                   8    
HELIX    3   3 PRO A  100  HIS A  121  1                                  22    
HELIX    4   4 LYS A  129  GLN A  131  5                                   3    
HELIX    5   5 GLY A  147  GLY A  153  1                                   7    
HELIX    6   6 ALA A  170  LEU A  175  1                                   6    
HELIX    7   7 THR A  182  ARG A  199  1                                  18    
HELIX    8   8 SER A  207  GLY A  220  1                                  14    
HELIX    9   9 GLY A  229  MET A  233  5                                   5    
HELIX   10  10 ASP A  247  VAL A  252  1                                   6    
HELIX   11  11 ASP A  256  LEU A  267  1                                  12    
HELIX   12  12 SER A  276  ALA A  282  1                                   7    
HELIX   13  13 HIS A  283  GLN A  287  5                                   5    
SHEET    1  AA 5 PHE A   4  GLU A  12  0                                        
SHEET    2  AA 5 VAL A  17  ASN A  23 -1  O  VAL A  18   N  ILE A  10           
SHEET    3  AA 5 VAL A  29  LYS A  34 -1  O  VAL A  30   N  ALA A  21           
SHEET    4  AA 5 LYS A  75  GLU A  81 -1  O  LEU A  78   N  LYS A  33           
SHEET    5  AA 5 LEU A  66  THR A  72 -1  N  LEU A  67   O  VAL A  79           
SHEET    1  AB 3 GLN A  85  ASP A  86  0                                        
SHEET    2  AB 3 LEU A 133  ILE A 135 -1  O  ILE A 135   N  GLN A  85           
SHEET    3  AB 3 ILE A 141  LEU A 143 -1  O  LYS A 142   N  LEU A 134           
CISPEP   1 PRO A  253    PRO A  254          0         2.39                     
SITE     1 AC1 13 GLU A  12  ALA A  31  LYS A  33  GLU A  81                    
SITE     2 AC1 13 LEU A  83  HIS A  84  GLN A  85  ASP A  86                    
SITE     3 AC1 13 LYS A  89  LEU A 134  HOH A2035  HOH A2094                    
SITE     4 AC1 13 HOH A2305                                                     
CRYST1   53.550   71.633   72.262  90.00  90.00  90.00 P 21 21 21    4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.018674  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.013960  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013839        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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