PDB Short entry for 1CKS
HEADER    CELL DIVISION                           16-SEP-93   1CKS              
TITLE     HUMAN CKSHS2 ATOMIC STRUCTURE: A ROLE FOR ITS HEXAMERIC ASSEMBLY IN   
TITLE    2 CELL CYCLE CONTROL                                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CYCLIN-DEPENDENT KINASE SUBUNIT, TYPE 2;                   
COMPND   3 CHAIN: A, B, C;                                                      
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606                                                 
KEYWDS    CELL DIVISION                                                         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.E.PARGE,A.S.ARVAI,J.A.TAINER                                        
REVDAT   4   29-NOV-17 1CKS    1       HELIX                                    
REVDAT   3   13-JUL-11 1CKS    1       VERSN                                    
REVDAT   2   24-FEB-09 1CKS    1       VERSN                                    
REVDAT   1   07-FEB-95 1CKS    0                                                
JRNL        AUTH   H.E.PARGE,A.S.ARVAI,D.J.MURTARI,S.I.REED,J.A.TAINER          
JRNL        TITL   HUMAN CKSHS2 ATOMIC STRUCTURE: A ROLE FOR ITS HEXAMERIC      
JRNL        TITL 2 ASSEMBLY IN CELL CYCLE CONTROL.                              
JRNL        REF    SCIENCE                       V. 262   387 1993              
JRNL        REFN                   ISSN 0036-8075                               
JRNL        PMID   8211159                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 3.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 13693                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.168                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2031                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 15                                      
REMARK   3   SOLVENT ATOMS            : 224                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.017                           
REMARK   3   BOND ANGLES            (DEGREES) : 3.400                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1CKS COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000172364.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
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) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
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: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 44.22                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.21                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
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       50.05000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       28.80000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       50.05000            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       28.80000            
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 300 REMARK: THE FOLLOWING TRANSFORMATION WILL GENERATE CHAINS D, E, F    
REMARK 300 FROM CHAINS A, B, C, RESPECTIVELY.  CHAINS A, B, C, D, E,            
REMARK 300 AND F FORM A HEXAMER.                                                
REMARK 300                                                                      
REMARK 300 TRNSF1   3 -1.000000  0.000000  0.000000      53.094002              
REMARK 300 TRNSF2   3  0.000000  1.000000  0.000000       0.000000              
REMARK 300 TRNSF3   3  0.000000  0.000000 -1.000000      90.760002              
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: HEXAMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: HEXAMERIC                  
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 23390 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 24520 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -226.0 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C                               
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   BIOMT1   2 -1.000000  0.000000  0.000000       53.06758            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       90.73473            
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     ASP A    76                                                      
REMARK 465     GLN A    77                                                      
REMARK 465     GLN A    78                                                      
REMARK 465     LYS A    79                                                      
REMARK 465     MET B     1                                                      
REMARK 465     MET C     1                                                      
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    HIS A   3   NE2   HIS A   3   CD2    -0.082                       
REMARK 500    HIS A  16   NE2   HIS A  16   CD2    -0.070                       
REMARK 500    HIS A  21   NE2   HIS A  21   CD2    -0.071                       
REMARK 500    HIS A  36   NE2   HIS A  36   CD2    -0.079                       
REMARK 500    HIS A  65   NE2   HIS A  65   CD2    -0.067                       
REMARK 500    HIS B  16   NE2   HIS B  16   CD2    -0.066                       
REMARK 500    HIS B  21   NE2   HIS B  21   CD2    -0.074                       
REMARK 500    HIS B  36   NE2   HIS B  36   CD2    -0.074                       
REMARK 500    HIS B  56   NE2   HIS B  56   CD2    -0.067                       
REMARK 500    HIS C   3   NE2   HIS C   3   CD2    -0.066                       
REMARK 500    HIS C  21   NE2   HIS C  21   CD2    -0.077                       
REMARK 500    HIS C  56   NE2   HIS C  56   CD2    -0.087                       
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    HIS A   3   CB  -  CG  -  CD2 ANGL. DEV. =  -9.8 DEGREES          
REMARK 500    ARG A  20   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    TRP A  43   CD1 -  CG  -  CD2 ANGL. DEV. =   6.0 DEGREES          
REMARK 500    TRP A  43   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.3 DEGREES          
REMARK 500    TRP A  54   CD1 -  CG  -  CD2 ANGL. DEV. =   6.6 DEGREES          
REMARK 500    TRP A  54   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.4 DEGREES          
REMARK 500    TYR A  57   CB  -  CG  -  CD1 ANGL. DEV. =  -4.3 DEGREES          
REMARK 500    ARG A  71   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500    ARG A  71   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    TYR B  12   CB  -  CG  -  CD2 ANGL. DEV. =  -3.8 DEGREES          
REMARK 500    TYR B  17   CB  -  CG  -  CD2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    ARG B  20   NE  -  CZ  -  NH1 ANGL. DEV. =   3.1 DEGREES          
REMARK 500    TRP B  43   CD1 -  CG  -  CD2 ANGL. DEV. =   6.5 DEGREES          
REMARK 500    TRP B  43   CB  -  CG  -  CD1 ANGL. DEV. =  -8.6 DEGREES          
REMARK 500    TRP B  43   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.4 DEGREES          
REMARK 500    ARG B  44   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    LEU B  52   CA  -  CB  -  CG  ANGL. DEV. =  14.2 DEGREES          
REMARK 500    TRP B  54   CD1 -  CG  -  CD2 ANGL. DEV. =   6.6 DEGREES          
REMARK 500    TRP B  54   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.0 DEGREES          
REMARK 500    HIS C   3   N   -  CA  -  C   ANGL. DEV. =  16.9 DEGREES          
REMARK 500    LYS C   4   N   -  CA  -  C   ANGL. DEV. =  16.6 DEGREES          
REMARK 500    ARG C  20   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.6 DEGREES          
REMARK 500    MET C  23   CA  -  CB  -  CG  ANGL. DEV. = -11.7 DEGREES          
REMARK 500    MET C  23   CG  -  SD  -  CE  ANGL. DEV. = -14.2 DEGREES          
REMARK 500    TRP C  43   CA  -  CB  -  CG  ANGL. DEV. =  14.2 DEGREES          
REMARK 500    TRP C  43   CD1 -  CG  -  CD2 ANGL. DEV. =   5.1 DEGREES          
REMARK 500    TRP C  43   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.2 DEGREES          
REMARK 500    TRP C  54   CD1 -  CG  -  CD2 ANGL. DEV. =   6.8 DEGREES          
REMARK 500    TRP C  54   CB  -  CG  -  CD1 ANGL. DEV. =  -8.2 DEGREES          
REMARK 500    TRP C  54   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.5 DEGREES          
REMARK 500    TRP C  54   CG  -  CD2 -  CE3 ANGL. DEV. =   7.0 DEGREES          
REMARK 500    ARG C  71   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASP A  14     -143.63   -117.98                                   
REMARK 500    HIS B   3     -147.45   -171.90                                   
REMARK 500    LYS B   4       53.34   -168.52                                   
REMARK 500    ASP B  14     -155.90   -127.91                                   
REMARK 500    LYS C   4       41.35      9.42                                   
REMARK 500    ASP C  14     -156.82   -121.61                                   
REMARK 500    SER C  51     -167.41    -73.60                                   
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 SO4 A 300                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 301                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 C 302                 
DBREF  1CKS A    1    79  UNP    P33552   CKS2_HUMAN       1     79             
DBREF  1CKS B    1    79  UNP    P33552   CKS2_HUMAN       1     79             
DBREF  1CKS C    1    79  UNP    P33552   CKS2_HUMAN       1     79             
SEQRES   1 A   79  MET ALA HIS LYS GLN ILE TYR TYR SER ASP LYS TYR PHE          
SEQRES   2 A   79  ASP GLU HIS TYR GLU TYR ARG HIS VAL MET LEU PRO ARG          
SEQRES   3 A   79  GLU LEU SER LYS GLN VAL PRO LYS THR HIS LEU MET SER          
SEQRES   4 A   79  GLU GLU GLU TRP ARG ARG LEU GLY VAL GLN GLN SER LEU          
SEQRES   5 A   79  GLY TRP VAL HIS TYR MET ILE HIS GLU PRO GLU PRO HIS          
SEQRES   6 A   79  ILE LEU LEU PHE ARG ARG PRO LEU PRO LYS ASP GLN GLN          
SEQRES   7 A   79  LYS                                                          
SEQRES   1 B   79  MET ALA HIS LYS GLN ILE TYR TYR SER ASP LYS TYR PHE          
SEQRES   2 B   79  ASP GLU HIS TYR GLU TYR ARG HIS VAL MET LEU PRO ARG          
SEQRES   3 B   79  GLU LEU SER LYS GLN VAL PRO LYS THR HIS LEU MET SER          
SEQRES   4 B   79  GLU GLU GLU TRP ARG ARG LEU GLY VAL GLN GLN SER LEU          
SEQRES   5 B   79  GLY TRP VAL HIS TYR MET ILE HIS GLU PRO GLU PRO HIS          
SEQRES   6 B   79  ILE LEU LEU PHE ARG ARG PRO LEU PRO LYS ASP GLN GLN          
SEQRES   7 B   79  LYS                                                          
SEQRES   1 C   79  MET ALA HIS LYS GLN ILE TYR TYR SER ASP LYS TYR PHE          
SEQRES   2 C   79  ASP GLU HIS TYR GLU TYR ARG HIS VAL MET LEU PRO ARG          
SEQRES   3 C   79  GLU LEU SER LYS GLN VAL PRO LYS THR HIS LEU MET SER          
SEQRES   4 C   79  GLU GLU GLU TRP ARG ARG LEU GLY VAL GLN GLN SER LEU          
SEQRES   5 C   79  GLY TRP VAL HIS TYR MET ILE HIS GLU PRO GLU PRO HIS          
SEQRES   6 C   79  ILE LEU LEU PHE ARG ARG PRO LEU PRO LYS ASP GLN GLN          
SEQRES   7 C   79  LYS                                                          
HET    SO4  A 300       5                                                       
HET    SO4  B 301       5                                                       
HET    SO4  C 302       5                                                       
HETNAM     SO4 SULFATE ION                                                      
FORMUL   4  SO4    3(O4 S 2-)                                                   
FORMUL   7  HOH   *224(H2 O)                                                    
HELIX    1  1A PRO A   25  GLN A   31  1                                   7    
HELIX    2  2A GLU A   40  LEU A   46  1                                   7    
HELIX    3  1B PRO B   25  GLN B   31  1                                   7    
HELIX    4  2B GLU B   40  LEU B   46  1                                   7    
HELIX    5  1C PRO C   25  GLN C   31  1                                   7    
HELIX    6  2C GLU C   40  LEU C   46  1                                   7    
SHEET    1  A1 4 GLN A   5  GLU A  15  0                                        
SHEET    2  A1 4 HIS A  16  LEU A  24 -1  N  MET A  23   O  TYR A   7           
SHEET    3  A1 4 TRP A  54  HIS A  60 -1                                        
SHEET    4  A1 4 HIS A  65  ARG A  71 -1                                        
SHEET    1  B1 4 GLN B   5  GLU B  15  0                                        
SHEET    2  B1 4 HIS B  16  LEU B  24 -1  N  MET B  23   O  TYR B   7           
SHEET    3  B1 4 TRP B  54  HIS B  60 -1                                        
SHEET    4  B1 4 HIS B  65  ARG B  71 -1                                        
SHEET    1  C1 4 GLN C   5  GLU C  15  0                                        
SHEET    2  C1 4 HIS C  16  LEU C  24 -1  N  MET C  23   O  TYR C   7           
SHEET    3  C1 4 TRP C  54  HIS C  60 -1                                        
SHEET    4  C1 4 HIS C  65  ARG C  71 -1                                        
SITE     1 AC1  7 LYS A  11  ARG A  20  GLN A  50  SER A  51                    
SITE     2 AC1  7 TRP A  54  ALA C   2  HOH C 558                               
SITE     1 AC2  7 ARG A  71  ALA B   2  LYS B  11  ARG B  20                    
SITE     2 AC2  7 GLN B  50  SER B  51  TRP B  54                               
SITE     1 AC3  7 ALA A   2  LYS A   4  HOH A 374  ARG C  20                    
SITE     2 AC3  7 GLN C  50  SER C  51  HOH C 708                               
CRYST1  100.100   57.600   51.100  90.00 117.40  90.00 C 1 2 1      12          
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      0.009990  0.000000  0.005178        0.00000                         
SCALE2      0.000000  0.017361  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.022042        0.00000                         
MTRIX1   1  0.821900  0.297000  0.486100      -26.15100    1                    
MTRIX2   1 -0.294800 -0.508400  0.809100       14.73900    1                    
MTRIX3   1  0.487400 -0.808300 -0.330300       70.60900    1                    
MTRIX1   2  0.835000 -0.308100  0.455900       -7.47800    1                    
MTRIX2   2  0.280000 -0.475300 -0.834100       73.04600    1                    
MTRIX3   2  0.473700  0.824100 -0.310600       23.03300    1