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Database: PDB
Entry: 1Z6S
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Original site: 1Z6S 
HEADER    HYDROLASE                               23-MAR-05   1Z6S              
TITLE     RIBONUCLEASE A- AMP COMPLEX                                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: RIBONUCLEASE PANCREATIC;                                   
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: RIBONUCLEASE A, RNASE A, RNASE 1;                           
COMPND   5 EC: 3.1.27.5                                                         
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: BOS TAURUS;                                     
SOURCE   3 ORGANISM_COMMON: CATTLE;                                             
SOURCE   4 ORGANISM_TAXID: 9913                                                 
KEYWDS    HYDROLASE, RIBONUCLEASE                                               
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    G.N.HATZOPOULOS,D.D.LEONIDAS,R.KARDAKARIS,J.KOBE,N.G.OIKONOMAKOS      
REVDAT   3   13-JUL-11 1Z6S    1       VERSN                                    
REVDAT   2   24-FEB-09 1Z6S    1       VERSN                                    
REVDAT   1   16-AUG-05 1Z6S    0                                                
JRNL        AUTH   G.N.HATZOPOULOS,D.D.LEONIDAS,R.KARDAKARIS,J.KOBE,            
JRNL        AUTH 2 N.G.OIKONOMAKOS                                              
JRNL        TITL   THE BINDING OF IMP TO RIBONUCLEASE A                         
JRNL        REF    FEBS J.                       V. 272  3988 2005              
JRNL        REFN                   ISSN 1742-464X                               
JRNL        PMID   16045769                                                     
JRNL        DOI    10.1111/J.1742-4658.2005.04822.X                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0005                                      
REMARK   3   AUTHORS     : MURSHUDOV,VAGIN,DODSON                               
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 35273                          
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) : 0.195                           
REMARK   3   R VALUE            (WORKING SET) : 0.193                           
REMARK   3   FREE R VALUE                     : 0.231                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1852                            
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) : 1.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.54                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 2587                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.13                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2400                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 148                          
REMARK   3   BIN FREE R VALUE                    : 0.2490                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1902                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 46                                      
REMARK   3   SOLVENT ATOMS            : 330                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   B VALUE TYPE : LIKELY RESIDUAL                                     
REMARK   3   FROM WILSON PLOT           (A**2) : 18.30                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 27.29                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.43000                                              
REMARK   3    B22 (A**2) : 0.15000                                              
REMARK   3    B33 (A**2) : -0.59000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.01000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.088         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.091         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.059         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 3.064         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.958                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.943                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2006 ; 0.011 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2727 ; 1.456 ; 1.964       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   246 ; 6.101 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    88 ;33.712 ;25.227       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   336 ;13.188 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     8 ;12.369 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   302 ; 0.084 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1499 ; 0.006 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   928 ; 0.202 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  1385 ; 0.295 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   241 ; 0.145 ; 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):    58 ; 0.214 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    39 ; 0.163 ; 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):  1265 ; 0.718 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2008 ; 1.162 ; 2.000       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   835 ; 2.054 ; 3.000       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   719 ; 3.211 ; 4.500       
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  : 2                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A     1        A   124                          
REMARK   3    ORIGIN FOR THE GROUP (A):  31.2958   0.3843   9.9726              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.1547 T22:  -0.1368                                     
REMARK   3      T33:  -0.1351 T12:  -0.0074                                     
REMARK   3      T13:   0.0159 T23:  -0.0072                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.7534 L22:   1.4734                                     
REMARK   3      L33:   4.3377 L12:  -0.0189                                     
REMARK   3      L13:  -0.6496 L23:  -0.0720                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0315 S12:   0.2976 S13:  -0.0479                       
REMARK   3      S21:  -0.1624 S22:   0.0710 S23:  -0.1574                       
REMARK   3      S31:  -0.1306 S32:  -0.0592 S33:  -0.1025                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   B     1        B   124                          
REMARK   3    ORIGIN FOR THE GROUP (A):   9.2056  -0.0441  31.1226              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.1129 T22:  -0.1283                                     
REMARK   3      T33:  -0.1037 T12:  -0.0279                                     
REMARK   3      T13:  -0.0263 T23:   0.0167                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   2.3566 L22:   1.6208                                     
REMARK   3      L33:   2.6418 L12:   0.0845                                     
REMARK   3      L13:   0.9787 L23:   0.8446                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0951 S12:   0.3154 S13:   0.0413                       
REMARK   3      S21:  -0.3158 S22:   0.0274 S23:   0.1493                       
REMARK   3      S31:  -0.0683 S32:  -0.0247 S33:   0.0677                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
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 1Z6S COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 28-MAR-05.                  
REMARK 100 THE RCSB ID CODE IS RCSB032369.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 21-DEC-04                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 5.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : EMBL/DESY, HAMBURG                 
REMARK 200  BEAMLINE                       : X11                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.8115                             
REMARK 200  MONOCHROMATOR                  : MIRRORS                            
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 35273                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.1                               
REMARK 200  DATA REDUNDANCY                : 2.500                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.04100                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 10.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.53                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.50                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.34000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.800                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS            
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 47.80                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.40                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: SODIUM CITRATE, PEG 4000, PH 5.5,        
REMARK 280  VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 289K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y,-Z                                                 
REMARK 290       3555   X+1/2,Y+1/2,Z                                           
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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   3  1.000000  0.000000  0.000000       50.16500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       16.30450            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       50.16500            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       16.30450            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B                                     
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 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH B1170  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A1148  LIES ON A SPECIAL POSITION.                          
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   NE2  GLN A   101     O    HOH A  1177              2.04            
REMARK 500   O3P  AMP A  1101     O    HOH A  1172              2.16            
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  1157     O    HOH B  1259     4546     2.16            
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    TYR A  92   CG    TYR A  92   CD1     0.125                       
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    ALA A  19       62.98    112.85                                   
REMARK 500    SER A  21      109.30    -22.58                                   
REMARK 500    HIS A  48       65.66   -102.21                                   
REMARK 500    GLN A  60     -139.37    -99.43                                   
REMARK 500    ASN A  71       31.46    -98.02                                   
REMARK 500    SER B  21       37.47     25.60                                   
REMARK 500    HIS B  48       59.85   -102.10                                   
REMARK 500    GLN B  60     -130.45   -106.87                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH A1102        DISTANCE =  5.31 ANGSTROMS                       
REMARK 525    HOH A1209        DISTANCE =  5.21 ANGSTROMS                       
REMARK 525    HOH B1243        DISTANCE =  5.48 ANGSTROMS                       
REMARK 525    HOH B1247        DISTANCE =  5.60 ANGSTROMS                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP A 1101                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP B 1102                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1Z6D   RELATED DB: PDB                                   
REMARK 900 RIBONUCLEASE A - IMP COMPLEX                                         
REMARK 900 RELATED ID: 1O0F   RELATED DB: PDB                                   
REMARK 900 RIBONUCLEASE A - 3'5'ADP COMPLEX                                     
REMARK 900 RELATED ID: 1O0O   RELATED DB: PDB                                   
REMARK 900 RIBONUCLEASE A - 2'5'ADP COMPLEX                                     
REMARK 900 RELATED ID: 1O0H   RELATED DB: PDB                                   
REMARK 900 RIBONUCLEASE A - 5'ADP COMPLEX                                       
REMARK 900 RELATED ID: 1O0M   RELATED DB: PDB                                   
REMARK 900 RIBONUCLEASE A - U-2'P COMPLEX                                       
REMARK 900 RELATED ID: 1O0N   RELATED DB: PDB                                   
REMARK 900 RIBONUCLEASE A - U-3'P COMPLEX                                       
DBREF  1Z6S A    1   124  UNP    P61823   RNAS1_BOVIN     27    150             
DBREF  1Z6S B    1   124  UNP    P61823   RNAS1_BOVIN     27    150             
SEQRES   1 A  124  LYS GLU THR ALA ALA ALA LYS PHE GLU ARG GLN HIS MET          
SEQRES   2 A  124  ASP SER SER THR SER ALA ALA SER SER SER ASN TYR CYS          
SEQRES   3 A  124  ASN GLN MET MET LYS SER ARG ASN LEU THR LYS ASP ARG          
SEQRES   4 A  124  CYS LYS PRO VAL ASN THR PHE VAL HIS GLU SER LEU ALA          
SEQRES   5 A  124  ASP VAL GLN ALA VAL CYS SER GLN LYS ASN VAL ALA CYS          
SEQRES   6 A  124  LYS ASN GLY GLN THR ASN CYS TYR GLN SER TYR SER THR          
SEQRES   7 A  124  MET SER ILE THR ASP CYS ARG GLU THR GLY SER SER LYS          
SEQRES   8 A  124  TYR PRO ASN CYS ALA TYR LYS THR THR GLN ALA ASN LYS          
SEQRES   9 A  124  HIS ILE ILE VAL ALA CYS GLU GLY ASN PRO TYR VAL PRO          
SEQRES  10 A  124  VAL HIS PHE ASP ALA SER VAL                                  
SEQRES   1 B  124  LYS GLU THR ALA ALA ALA LYS PHE GLU ARG GLN HIS MET          
SEQRES   2 B  124  ASP SER SER THR SER ALA ALA SER SER SER ASN TYR CYS          
SEQRES   3 B  124  ASN GLN MET MET LYS SER ARG ASN LEU THR LYS ASP ARG          
SEQRES   4 B  124  CYS LYS PRO VAL ASN THR PHE VAL HIS GLU SER LEU ALA          
SEQRES   5 B  124  ASP VAL GLN ALA VAL CYS SER GLN LYS ASN VAL ALA CYS          
SEQRES   6 B  124  LYS ASN GLY GLN THR ASN CYS TYR GLN SER TYR SER THR          
SEQRES   7 B  124  MET SER ILE THR ASP CYS ARG GLU THR GLY SER SER LYS          
SEQRES   8 B  124  TYR PRO ASN CYS ALA TYR LYS THR THR GLN ALA ASN LYS          
SEQRES   9 B  124  HIS ILE ILE VAL ALA CYS GLU GLY ASN PRO TYR VAL PRO          
SEQRES  10 B  124  VAL HIS PHE ASP ALA SER VAL                                  
HET    AMP  A1101      36                                                       
HET    AMP  B1102      23                                                       
HETNAM     AMP ADENOSINE MONOPHOSPHATE                                          
FORMUL   3  AMP    2(C10 H14 N5 O7 P)                                           
FORMUL   5  HOH   *330(H2 O)                                                    
HELIX    1   1 THR A    3  MET A   13  1                                  11    
HELIX    2   2 ASN A   24  ARG A   33  1                                  10    
HELIX    3   3 SER A   50  VAL A   57  1                                   8    
HELIX    4   4 CYS A   58  GLN A   60  5                                   3    
HELIX    5   5 THR B    3  MET B   13  1                                  11    
HELIX    6   6 ASN B   24  ARG B   33  1                                  10    
HELIX    7   7 SER B   50  ALA B   56  1                                   7    
HELIX    8   8 VAL B   57  GLN B   60  5                                   4    
SHEET    1   A 5 VAL A  43  VAL A  47  0                                        
SHEET    2   A 5 MET A  79  GLU A  86 -1  O  CYS A  84   N  ASN A  44           
SHEET    3   A 5 TYR A  97  GLU A 111 -1  O  LYS A  98   N  ARG A  85           
SHEET    4   A 5 CYS A  72  GLN A  74 -1  N  TYR A  73   O  VAL A 108           
SHEET    5   A 5 LYS A  61  VAL A  63 -1  N  LYS A  61   O  GLN A  74           
SHEET    1   B 4 VAL A  43  VAL A  47  0                                        
SHEET    2   B 4 MET A  79  GLU A  86 -1  O  CYS A  84   N  ASN A  44           
SHEET    3   B 4 TYR A  97  GLU A 111 -1  O  LYS A  98   N  ARG A  85           
SHEET    4   B 4 VAL A 116  VAL A 124 -1  O  VAL A 118   N  ALA A 109           
SHEET    1   C 5 VAL B  43  VAL B  47  0                                        
SHEET    2   C 5 MET B  79  GLU B  86 -1  O  CYS B  84   N  ASN B  44           
SHEET    3   C 5 TYR B  97  GLU B 111 -1  O  THR B 100   N  ASP B  83           
SHEET    4   C 5 CYS B  72  GLN B  74 -1  N  TYR B  73   O  VAL B 108           
SHEET    5   C 5 LYS B  61  VAL B  63 -1  N  LYS B  61   O  GLN B  74           
SHEET    1   D 4 VAL B  43  VAL B  47  0                                        
SHEET    2   D 4 MET B  79  GLU B  86 -1  O  CYS B  84   N  ASN B  44           
SHEET    3   D 4 TYR B  97  GLU B 111 -1  O  THR B 100   N  ASP B  83           
SHEET    4   D 4 VAL B 116  VAL B 124 -1  O  VAL B 118   N  ALA B 109           
SSBOND   1 CYS A   26    CYS A   84                          1555   1555  2.02  
SSBOND   2 CYS A   40    CYS A   95                          1555   1555  2.02  
SSBOND   3 CYS A   58    CYS A  110                          1555   1555  2.04  
SSBOND   4 CYS A   65    CYS A   72                          1555   1555  2.04  
SSBOND   5 CYS B   26    CYS B   84                          1555   1555  2.03  
SSBOND   6 CYS B   40    CYS B   95                          1555   1555  2.04  
SSBOND   7 CYS B   58    CYS B  110                          1555   1555  2.06  
SSBOND   8 CYS B   65    CYS B   72                          1555   1555  2.01  
CISPEP   1 TYR A   92    PRO A   93          0         5.93                     
CISPEP   2 ASN A  113    PRO A  114          0         8.84                     
CISPEP   3 TYR B   92    PRO B   93          0         5.13                     
CISPEP   4 ASN B  113    PRO B  114          0         5.95                     
SITE     1 AC1 19 GLN A  11  HIS A  12  LYS A  41  CYS A  65                    
SITE     2 AC1 19 ASN A  67  GLN A  69  ASN A  71  ALA A 109                    
SITE     3 AC1 19 GLU A 111  HIS A 119  PHE A 120  HOH A1103                    
SITE     4 AC1 19 HOH A1109  HOH A1121  HOH A1172  HOH A1236                    
SITE     5 AC1 19 HOH A1237  HOH A1261  LYS B  91                               
SITE     1 AC2 15 GLN B  11  HIS B  12  LYS B  41  CYS B  65                    
SITE     2 AC2 15 ASN B  67  GLN B  69  ASN B  71  ALA B 109                    
SITE     3 AC2 15 GLU B 111  VAL B 118  HIS B 119  PHE B 120                    
SITE     4 AC2 15 HOH B1115  HOH B1123  HOH B1227                               
CRYST1  100.330   32.609   72.419  90.00  90.83  90.00 C 1 2 1       8          
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      0.009967  0.000000  0.000144        0.00000                         
SCALE2      0.000000  0.030666  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013810        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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