PDB Short entry for 2BRO
HEADER    TRANSFERASE                             09-MAY-05   2BRO              
TITLE     STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS INTO        
TITLE    2 HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: SERINE/THREONINE-PROTEIN KINASE CHK1;                      
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: N-TERMINAL KINASE DOMAIN, RESIDUES 1-289;                  
COMPND   5 SYNONYM: CHK1 KINASE;                                                
COMPND   6 EC: 2.7.1.37;                                                        
COMPND   7 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_TAXID: 7108;                                       
SOURCE   7 EXPRESSION_SYSTEM_CELL_LINE: SF9;                                    
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: BACULOVIRUS;                          
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PFASTBAC1/CHK1 1-289 C8H                  
KEYWDS    DRUG DESIGN, FURANOPYRIMIDINE, MOLECULAR RECOGNITION, ONCOLOGY,       
KEYWDS   2 PYRROLOPYRIMIDINE, ATP-BINDING, CELL CYCLE, DNA DAMAGE, KINASE,      
KEYWDS   3 NUCLEAR PROTEIN, PHOSPHORYLATION, POLYMORPHISM, SERINE/THREONINE-    
KEYWDS   4 PROTEIN KINASE, TRANSFERASE                                          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    N.FOLOPPE,L.M.FISHER,R.HOWES,P.KIERSTAN,A.POTTER,A.G.S.ROBERTSON,     
AUTHOR   2 A.E.SURGENOR                                                         
REVDAT   4   13-DEC-23 2BRO    1       REMARK                                   
REVDAT   3   24-FEB-09 2BRO    1       VERSN                                    
REVDAT   2   29-JUN-05 2BRO    1       JRNL                                     
REVDAT   1   12-MAY-05 2BRO    0                                                
JRNL        AUTH   N.FOLOPPE,L.M.FISHER,R.HOWES,P.KIERSTAN,A.POTTER,            
JRNL        AUTH 2 A.G.S.ROBERTSON,A.E.SURGENOR                                 
JRNL        TITL   STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS    
JRNL        TITL 2 INTO HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY.           
JRNL        REF    J.MED.CHEM.                   V.  48  4332 2005              
JRNL        REFN                   ISSN 0022-2623                               
JRNL        PMID   15974586                                                     
JRNL        DOI    10.1021/JM049022C                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.20 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) : 2.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 97.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 14833                          
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) : 0.202                           
REMARK   3   R VALUE            (WORKING SET) : 0.198                           
REMARK   3   FREE R VALUE                     : 0.279                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 796                             
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) : 2.20                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.26                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1096                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2060                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 50                           
REMARK   3   BIN FREE R VALUE                    : 0.2340                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2184                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 27                                      
REMARK   3   SOLVENT ATOMS            : 244                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 37.80                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -1.10000                                             
REMARK   3    B22 (A**2) : -1.03000                                             
REMARK   3    B33 (A**2) : 1.94000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -0.48000                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.312         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.256         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.169         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 6.451         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.946                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.892                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2266 ; 0.015 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  2032 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  3071 ; 1.593 ; 1.973       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  4737 ; 0.911 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   270 ; 6.187 ; 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):   329 ; 0.099 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  2487 ; 0.006 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   440 ; 0.003 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   518 ; 0.205 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  2485 ; 0.229 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  1382 ; 0.088 ; 0.200       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   148 ; 0.194 ; 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):    27 ; 0.230 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):    93 ; 0.269 ; 0.200       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    25 ; 0.347 ; 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):  1358 ; 0.977 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2192 ; 1.784 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   908 ; 2.400 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   879 ; 3.946 ; 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 2BRO COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 09-MAY-05.                  
REMARK 100 THE DEPOSITION ID IS D_1290023966.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 7.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 19-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.97920                            
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 16331                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.3                               
REMARK 200  DATA REDUNDANCY                : 4.300                              
REMARK 200  R MERGE                    (I) : 0.08000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 7.6000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.29                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 89.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.30                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.39000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.700                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: PDB ENTRY 1IA8                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 56.90                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.50                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,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       32.93150            
REMARK 290   SMTRY3   2  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 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     MET A     1                                                      
REMARK 465     ALA A    45                                                      
REMARK 465     VAL A    46                                                      
REMARK 465     ASP A    47                                                      
REMARK 465     ARG A   277                                                      
REMARK 465     VAL A   278                                                      
REMARK 465     THR A   279                                                      
REMARK 465     SER A   280                                                      
REMARK 465     GLY A   281                                                      
REMARK 465     GLY A   282                                                      
REMARK 465     VAL A   283                                                      
REMARK 465     SER A   284                                                      
REMARK 465     GLU A   285                                                      
REMARK 465     SER A   286                                                      
REMARK 465     PRO A   287                                                      
REMARK 465     SER A   288                                                      
REMARK 465     GLY A   289                                                      
REMARK 465     HIS A   290                                                      
REMARK 465     HIS A   291                                                      
REMARK 465     HIS A   292                                                      
REMARK 465     HIS A   293                                                      
REMARK 465     HIS A   294                                                      
REMARK 465     HIS A   295                                                      
REMARK 465     HIS A   296                                                      
REMARK 465     HIS A   297                                                      
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     LYS A  43    CG   CD   CE   NZ                                   
REMARK 470     ARG A  44    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     ASN A  51    CG   OD1  ND2                                       
REMARK 470     LYS A 274    CG   CD   CE   NZ                                   
REMARK 470     ARG A 275    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     PRO A 276    CG   CD                                             
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   O    HOH A  2021     O    HOH A  2048              2.12            
REMARK 500   O    ILE A   100     O    HOH A  2098              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  2122     O    HOH A  2229     2545     1.95            
REMARK 500   O    HOH A  2011     O    HOH A  2165     1556     2.05            
REMARK 500   O    HOH A  2003     O    HOH A  2193     1656     2.16            
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  10   CB  -  CG  -  OD2 ANGL. DEV. =   5.4 DEGREES          
REMARK 500    ASP A 106   CB  -  CG  -  OD2 ANGL. DEV. =   5.9 DEGREES          
REMARK 500    ARG A 109   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.4 DEGREES          
REMARK 500    ASP A 130   CB  -  CG  -  OD2 ANGL. DEV. =   7.3 DEGREES          
REMARK 500    LEU A 178   CA  -  CB  -  CG  ANGL. DEV. =  14.8 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    PRO A   4     -158.40    -56.78                                   
REMARK 500    PHE A   5       45.24    -69.22                                   
REMARK 500    ALA A  19      -62.59     73.71                                   
REMARK 500    PRO A  49       20.14    -66.97                                   
REMARK 500    ASN A  63       82.29   -156.26                                   
REMARK 500    GLU A  76       64.31     37.95                                   
REMARK 500    GLU A  85      120.97    -36.19                                   
REMARK 500    ASP A  99      -13.16     73.41                                   
REMARK 500    ASP A 130       49.24   -155.16                                   
REMARK 500    ASP A 148       90.51     78.19                                   
REMARK 500    ASP A 235      133.36    112.24                                   
REMARK 500    LEU A 246       59.15    -90.96                                   
REMARK 500    LEU A 269      -38.81   -138.69                                   
REMARK 500    ALA A 273      138.49    -34.05                                   
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 A2028        DISTANCE =  6.44 ANGSTROMS                       
REMARK 525    HOH A2077        DISTANCE =  6.33 ANGSTROMS                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DF2 A1277                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1IA8   RELATED DB: PDB                                   
REMARK 900 THE 1.7 A CRYSTAL STRUCTURE OF HUMAN CELL CYCLE CHECKPOINTKINASE     
REMARK 900 CHK1                                                                 
REMARK 900 RELATED ID: 1NVQ   RELATED DB: PDB                                   
REMARK 900 THE COMPLEX STRUCTURE OF CHECKPOINT KINASE CHK1/UCN-01               
REMARK 900 RELATED ID: 1NVR   RELATED DB: PDB                                   
REMARK 900 THE COMPLEX STRUCTURE OF CHECKPOINT KINASECHK1 /STAUROSPORINE        
REMARK 900 RELATED ID: 1NVS   RELATED DB: PDB                                   
REMARK 900 THE COMPLEX STRUCTURE OF CHECKPOINT KINASE CHK1/SB218078             
REMARK 900 RELATED ID: 2BR1   RELATED DB: PDB                                   
REMARK 900 STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS INTO       
REMARK 900 HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY                         
REMARK 900 RELATED ID: 2BRB   RELATED DB: PDB                                   
REMARK 900 STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS INTO       
REMARK 900 HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY                         
REMARK 900 RELATED ID: 2BRG   RELATED DB: PDB                                   
REMARK 900 STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS INTO       
REMARK 900 HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY                         
REMARK 900 RELATED ID: 2BRH   RELATED DB: PDB                                   
REMARK 900 STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS INTO       
REMARK 900 HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY                         
REMARK 900 RELATED ID: 2BRM   RELATED DB: PDB                                   
REMARK 900 STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS INTO       
REMARK 900 HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY                         
REMARK 900 RELATED ID: 2BRN   RELATED DB: PDB                                   
REMARK 900 STRUCTURE-BASED DESIGN OF NOVEL CHK1 INHIBITORS: INSIGHTS INTO       
REMARK 900 HYDROGEN BONDING AND PROTEIN-LIGAND AFFINITY                         
DBREF  2BRO A    1   289  UNP    O14757   CHK1_HUMAN       1    289             
DBREF  2BRO A  290   297  PDB    2BRO     2BRO           290    297             
SEQRES   1 A  297  MET ALA VAL PRO PHE VAL GLU ASP TRP ASP LEU VAL GLN          
SEQRES   2 A  297  THR LEU GLY GLU GLY ALA TYR GLY GLU VAL GLN LEU ALA          
SEQRES   3 A  297  VAL ASN ARG VAL THR GLU GLU ALA VAL ALA VAL LYS ILE          
SEQRES   4 A  297  VAL ASP MET LYS ARG ALA VAL ASP CYS PRO GLU ASN ILE          
SEQRES   5 A  297  LYS LYS GLU ILE CYS ILE ASN LYS MET LEU ASN HIS GLU          
SEQRES   6 A  297  ASN VAL VAL LYS PHE TYR GLY HIS ARG ARG GLU GLY ASN          
SEQRES   7 A  297  ILE GLN TYR LEU PHE LEU GLU TYR CYS SER GLY GLY GLU          
SEQRES   8 A  297  LEU PHE ASP ARG ILE GLU PRO ASP ILE GLY MET PRO GLU          
SEQRES   9 A  297  PRO ASP ALA GLN ARG PHE PHE HIS GLN LEU MET ALA GLY          
SEQRES  10 A  297  VAL VAL TYR LEU HIS GLY ILE GLY ILE THR HIS ARG ASP          
SEQRES  11 A  297  ILE LYS PRO GLU ASN LEU LEU LEU ASP GLU ARG ASP ASN          
SEQRES  12 A  297  LEU LYS ILE SER ASP PHE GLY LEU ALA THR VAL PHE ARG          
SEQRES  13 A  297  TYR ASN ASN ARG GLU ARG LEU LEU ASN LYS MET CYS GLY          
SEQRES  14 A  297  THR LEU PRO TYR VAL ALA PRO GLU LEU LEU LYS ARG ARG          
SEQRES  15 A  297  GLU PHE HIS ALA GLU PRO VAL ASP VAL TRP SER CYS GLY          
SEQRES  16 A  297  ILE VAL LEU THR ALA MET LEU ALA GLY GLU LEU PRO TRP          
SEQRES  17 A  297  ASP GLN PRO SER ASP SER CYS GLN GLU TYR SER ASP TRP          
SEQRES  18 A  297  LYS GLU LYS LYS THR TYR LEU ASN PRO TRP LYS LYS ILE          
SEQRES  19 A  297  ASP SER ALA PRO LEU ALA LEU LEU HIS LYS ILE LEU VAL          
SEQRES  20 A  297  GLU ASN PRO SER ALA ARG ILE THR ILE PRO ASP ILE LYS          
SEQRES  21 A  297  LYS ASP ARG TRP TYR ASN LYS PRO LEU LYS LYS GLY ALA          
SEQRES  22 A  297  LYS ARG PRO ARG VAL THR SER GLY GLY VAL SER GLU SER          
SEQRES  23 A  297  PRO SER GLY HIS HIS HIS HIS HIS HIS HIS HIS                  
HET    DF2  A1277      27                                                       
HETNAM     DF2 (2R)-3-{[(4Z)-5,6-DIPHENYL-6,7-DIHYDRO-4H-PYRROLO[2,3-           
HETNAM   2 DF2  D]PYRIMIDIN-4-YLIDENE]AMINO}PROPANE-1,2-DIOL                    
FORMUL   2  DF2    C21 H20 N4 O2                                                
FORMUL   3  HOH   *244(H2 O)                                                    
HELIX    1   1 PRO A   49  LEU A   62  1                                  14    
HELIX    2   2 PHE A   93  ILE A   96  5                                   4    
HELIX    3   3 PRO A  103  ILE A  124  1                                  22    
HELIX    4   4 LYS A  132  GLU A  134  5                                   3    
HELIX    5   5 THR A  170  VAL A  174  5                                   5    
HELIX    6   6 ALA A  175  ARG A  181  1                                   7    
HELIX    7   7 ALA A  186  GLY A  204  1                                  19    
HELIX    8   8 CYS A  215  GLU A  223  1                                   9    
HELIX    9   9 PRO A  230  ILE A  234  5                                   5    
HELIX   10  10 ASP A  235  LEU A  246  1                                  12    
HELIX   11  11 THR A  255  LYS A  260  1                                   6    
SHEET    1  AA 5 TRP A   9  GLY A  16  0                                        
SHEET    2  AA 5 GLY A  21  ASN A  28 -1  O  VAL A  23   N  LEU A  15           
SHEET    3  AA 5 ALA A  34  ASP A  41 -1  O  VAL A  35   N  ALA A  26           
SHEET    4  AA 5 ILE A  79  LEU A  84 -1  O  GLN A  80   N  VAL A  40           
SHEET    5  AA 5 PHE A  70  ARG A  74 -1  N  TYR A  71   O  PHE A  83           
SHEET    1  AB 3 GLY A  90  GLU A  91  0                                        
SHEET    2  AB 3 LEU A 136  LEU A 138 -1  N  LEU A 138   O  GLY A  90           
SHEET    3  AB 3 LEU A 144  ILE A 146 -1  O  LYS A 145   N  LEU A 137           
SHEET    1  AC 2 ILE A 126  THR A 127  0                                        
SHEET    2  AC 2 THR A 153  VAL A 154 -1  O  THR A 153   N  THR A 127           
SHEET    1  AD 2 ARG A 156  TYR A 157  0                                        
SHEET    2  AD 2 ARG A 160  GLU A 161 -1  O  ARG A 160   N  TYR A 157           
CISPEP   1 GLU A   17    GLY A   18          0         1.19                     
CISPEP   2 ASN A  229    PRO A  230          0         0.83                     
SITE     1 AC1 11 LEU A  15  GLY A  16  GLU A  17  VAL A  23                    
SITE     2 AC1 11 ALA A  36  LEU A  84  GLU A  85  CYS A  87                    
SITE     3 AC1 11 GLY A  90  LEU A 137  HOH A2244                               
CRYST1   45.071   65.863   54.473  90.00 101.66  90.00 P 1 21 1      2          
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      0.022187  0.000000  0.004580        0.00000                         
SCALE2      0.000000  0.015183  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.018745        0.00000