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Database: PDB
Entry: 4QB3
LinkDB: 4QB3
Original site: 4QB3 
HEADER    TRANSCRIPTION/TRANSCRIPTION INHIBITOR   06-MAY-14   4QB3              
TITLE     CRYSTAL STRUCTURE OF THE FIRST BROMODOMAIN OF HUMAN BRD4 IN COMPLEX   
TITLE    2 WITH OLINONE                                                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: BROMODOMAIN-CONTAINING PROTEIN 4;                          
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: PROTEIN HUNK1;                                              
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: BRD4, HUNK1;                                                   
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    BROMODOMAIN, TRANSCRIPTION FACTOR, ACETYL-LYSINE BINDING,             
KEYWDS   2 TRANSCRIPTION-TRANSCRIPTION INHIBITOR COMPLEX                        
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.N.PLOTNIKOV,J.JOSHUA,M.-M.ZHOU                                      
REVDAT   2   20-SEP-23 4QB3    1       REMARK SEQADV                            
REVDAT   1   22-APR-15 4QB3    0                                                
JRNL        AUTH   M.GACIAS,G.GERONA-NAVARRO,A.N.PLOTNIKOV,G.ZHANG,L.ZENG,      
JRNL        AUTH 2 J.KAUR,G.MOY,E.RUSINOVA,Y.RODRIGUEZ,B.MATIKAINEN,A.VINCEK,   
JRNL        AUTH 3 J.JOSHUA,P.CASACCIA,M.M.ZHOU                                 
JRNL        TITL   SELECTIVE CHEMICAL MODULATION OF GENE TRANSCRIPTION FAVORS   
JRNL        TITL 2 OLIGODENDROCYTE LINEAGE PROGRESSION.                         
JRNL        REF    CHEM.BIOL.                    V.  21   841 2014              
JRNL        REFN                   ISSN 1074-5521                               
JRNL        PMID   24954007                                                     
JRNL        DOI    10.1016/J.CHEMBIOL.2014.05.009                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    0.94 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0102                                      
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) : 0.94                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 9.94                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 79108                          
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) : 0.137                           
REMARK   3   R VALUE            (WORKING SET) : 0.136                           
REMARK   3   FREE R VALUE                     : 0.155                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 4143                            
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) : 0.94                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 0.96                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 5781                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.38                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2580                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 272                          
REMARK   3   BIN FREE R VALUE                    : 0.2560                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1056                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 26                                      
REMARK   3   SOLVENT ATOMS            : 286                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 13.28                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.23000                                              
REMARK   3    B22 (A**2) : -0.08000                                             
REMARK   3    B33 (A**2) : -0.15000                                             
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): 0.019         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.020         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.011         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.412         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.973                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.965                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1127 ; 0.028 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  1536 ; 2.157 ; 2.000       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   130 ; 5.826 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    52 ;38.970 ;25.769       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   198 ;12.590 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     3 ;24.734 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   162 ; 0.380 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):   862 ; 0.015 ; 0.022       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
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):   654 ; 2.157 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1078 ; 3.306 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   473 ; 4.753 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   457 ; 6.292 ; 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):  1127 ; 2.466 ; 3.000       
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 : 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 4QB3 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-MAY-14.                  
REMARK 100 THE DEPOSITION ID IS D_1000085830.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 24-NOV-10                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X6A                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1                                  
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 270                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 83274                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 0.940                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 10.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.1                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 0.94                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 0.96                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.3                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
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: 2OSS                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 41.91                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.12                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 25% TERT-BUTANOL, 0.1 M TRIS PH 8.5,     
REMARK 280  VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K                     
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       18.47150            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       39.22750            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       22.06300            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       39.22750            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       18.47150            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       22.06300            
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: PISA                                                  
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 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     GLN A  78    CD   OE1  NE2                                       
REMARK 470     GLN A 123    CD   OE1  NE2                                       
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    60     O    HOH A   331              1.28            
REMARK 500   CB   ARG A    68     O    HOH A   334              1.50            
REMARK 500   O    HOH A   578     O    HOH A   579              1.55            
REMARK 500   O    HOH A   338     O    HOH A   437              1.55            
REMARK 500   O    HOH A   457     O    HOH A   565              1.69            
REMARK 500   CG2  THR A    60     O    HOH A   330              1.70            
REMARK 500   O    HOH A   323     O    HOH A   331              1.82            
REMARK 500   O    HOH A   323     O    HOH A   330              1.84            
REMARK 500   O    HOH A   355     O    HOH A   533              1.91            
REMARK 500   O    HOH A   534     O    HOH A   538              1.94            
REMARK 500   O    HOH A   349     O    HOH A   480              1.96            
REMARK 500   CB   ASN A    54     O    HOH A   577              1.96            
REMARK 500   O    HOH A   338     O    HOH A   446              2.05            
REMARK 500   O    HOH A   469     O    HOH A   583              2.05            
REMARK 500   O    HOH A   431     O    HOH A   582              2.07            
REMARK 500   O    HOH A   568     O    HOH A   581              2.07            
REMARK 500   O    HOH A   471     O    HOH A   528              2.09            
REMARK 500   O    HOH A   302     O    HOH A   559              2.09            
REMARK 500   OE1  GLU A   167     O    HOH A   445              2.11            
REMARK 500   O    HOH A   336     O    HOH A   425              2.12            
REMARK 500   OD1  ASN A    61     O    HOH A   478              2.13            
REMARK 500   O    HOH A   327     O    HOH A   349              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A   415     O    HOH A   572     4465     1.17            
REMARK 500   NH1  ARG A    68     O    HOH A   580     4565     1.51            
REMARK 500   O    HOH A   302     O    HOH A   317     3645     1.60            
REMARK 500   O    HOH A   380     O    HOH A   452     4475     1.88            
REMARK 500   O    HOH A   352     O    HOH A   380     4575     1.95            
REMARK 500   O    HOH A   455     O    HOH A   583     4575     2.00            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    MET A  43   C     ASN A  44   N       0.142                       
REMARK 500    GLU A  49   CG    GLU A  49   CD     -0.126                       
REMARK 500    LYS A  57   CA    LYS A  57   CB      0.153                       
REMARK 500    GLU A 124   CD    GLU A 124   OE1    -0.085                       
REMARK 500    GLU A 167   CG    GLU A 167   CD      0.119                       
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    ARG A  68   NE  -  CZ  -  NH1 ANGL. DEV. =  -7.1 DEGREES          
REMARK 500    LYS A  72   CD  -  CE  -  NZ  ANGL. DEV. = -27.7 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    ASN A  52       95.69   -165.58                                   
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 30M A 201                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE EDO A 202                 
DBREF  4QB3 A   44   168  UNP    O60885   BRD4_HUMAN      44    168             
SEQADV 4QB3 SER A   42  UNP  O60885              EXPRESSION TAG                 
SEQADV 4QB3 MET A   43  UNP  O60885              EXPRESSION TAG                 
SEQRES   1 A  127  SER MET ASN PRO PRO PRO PRO GLU THR SER ASN PRO ASN          
SEQRES   2 A  127  LYS PRO LYS ARG GLN THR ASN GLN LEU GLN TYR LEU LEU          
SEQRES   3 A  127  ARG VAL VAL LEU LYS THR LEU TRP LYS HIS GLN PHE ALA          
SEQRES   4 A  127  TRP PRO PHE GLN GLN PRO VAL ASP ALA VAL LYS LEU ASN          
SEQRES   5 A  127  LEU PRO ASP TYR TYR LYS ILE ILE LYS THR PRO MET ASP          
SEQRES   6 A  127  MET GLY THR ILE LYS LYS ARG LEU GLU ASN ASN TYR TYR          
SEQRES   7 A  127  TRP ASN ALA GLN GLU CYS ILE GLN ASP PHE ASN THR MET          
SEQRES   8 A  127  PHE THR ASN CYS TYR ILE TYR ASN LYS PRO GLY ASP ASP          
SEQRES   9 A  127  ILE VAL LEU MET ALA GLU ALA LEU GLU LYS LEU PHE LEU          
SEQRES  10 A  127  GLN LYS ILE ASN GLU LEU PRO THR GLU GLU                      
HET    30M  A 201      22                                                       
HET    EDO  A 202       4                                                       
HETNAM     30M N-[4-(1-OXO-1,2,3,4-TETRAHYDRO-5H-PYRIDO[4,3-B]INDOL-5-          
HETNAM   2 30M  YL)BUTYL]ACETAMIDE                                              
HETNAM     EDO 1,2-ETHANEDIOL                                                   
HETSYN     EDO ETHYLENE GLYCOL                                                  
FORMUL   2  30M    C17 H21 N3 O2                                                
FORMUL   3  EDO    C2 H6 O2                                                     
FORMUL   4  HOH   *286(H2 O)                                                    
HELIX    1   1 THR A   60  VAL A   69  1                                  10    
HELIX    2   2 VAL A   69  LYS A   76  1                                   8    
HELIX    3   3 ALA A   80  GLN A   84  5                                   5    
HELIX    4   4 ASP A   96  ILE A  101  1                                   6    
HELIX    5   5 ASP A  106  ASN A  116  1                                  11    
HELIX    6   6 ASN A  121  ASN A  140  1                                  20    
HELIX    7   7 ASP A  144  ASN A  162  1                                  19    
SITE     1 AC1 14 TRP A  81  PRO A  82  PHE A  83  VAL A  87                    
SITE     2 AC1 14 LEU A  94  LYS A  99  ASN A 140  ASP A 144                    
SITE     3 AC1 14 ASP A 145  ILE A 146  HOH A 342  HOH A 382                    
SITE     4 AC1 14 HOH A 411  HOH A 480                                          
SITE     1 AC2  5 ILE A 100  ILE A 101  LYS A 102  THR A 103                    
SITE     2 AC2  5 ASN A 135                                                     
CRYST1   36.943   44.126   78.455  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      0.027069  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.022662  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012746        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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