HEADER    LIGASE                                  08-SEP-00   1FS1              
TITLE     INSIGHTS INTO SCF UBIQUITIN LIGASES FROM THE STRUCTURE OF THE SKP1-   
TITLE    2 SKP2 COMPLEX                                                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CYCLIN A/CDK2-ASSOCIATED P19;                              
COMPND   3 CHAIN: A, C;                                                         
COMPND   4 FRAGMENT: RESIDUES 101-153;                                          
COMPND   5 SYNONYM: SKP2 F-BOX;                                                 
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MOL_ID: 2;                                                           
COMPND   8 MOLECULE: CYCLIN A/CDK2-ASSOCIATED P45;                              
COMPND   9 CHAIN: B, D;                                                         
COMPND  10 FRAGMENT: RESIDUES 1-147;                                            
COMPND  11 SYNONYM: SKP1;                                                       
COMPND  12 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: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 MOL_ID: 2;                                                           
SOURCE   8 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   9 ORGANISM_COMMON: HUMAN;                                              
SOURCE  10 ORGANISM_TAXID: 9606;                                                
SOURCE  11 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  12 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    SKP1, SKP2, F-BOX, LRR, LEUCINE-RICH REPEAT, SCF, UBIQUITIN, E3,      
KEYWDS   2 UBIQUITIN PROTEIN LIGASE, LIGASE                                     
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.A.SCHULMAN,A.C.CARRANO,P.D.JEFFREY,Z.BOWEN,E.R.E.KINNUCAN,          
AUTHOR   2 M.S.FINNIN,S.J.ELLEDGE,J.W.HARPER,M.PAGANO,N.P.PAVLETICH             
REVDAT   4   07-FEB-24 1FS1    1       SEQADV                                   
REVDAT   3   24-FEB-09 1FS1    1       VERSN                                    
REVDAT   2   01-APR-03 1FS1    1       JRNL                                     
REVDAT   1   29-NOV-00 1FS1    0                                                
JRNL        AUTH   B.A.SCHULMAN,A.C.CARRANO,P.D.JEFFREY,Z.BOWEN,E.R.KINNUCAN,   
JRNL        AUTH 2 M.S.FINNIN,S.J.ELLEDGE,J.W.HARPER,M.PAGANO,N.P.PAVLETICH     
JRNL        TITL   INSIGHTS INTO SCF UBIQUITIN LIGASES FROM THE STRUCTURE OF    
JRNL        TITL 2 THE SKP1-SKP2 COMPLEX.                                       
JRNL        REF    NATURE                        V. 408   381 2000              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   11099048                                                     
JRNL        DOI    10.1038/35042620                                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
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             : NULL                           
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) : 0.218                           
REMARK   3   FREE R VALUE                     : 0.274                           
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            : 2497                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 570                                     
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) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
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  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : 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 1FS1 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-OCT-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000011851.                                   
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                             : 4.6                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X9A                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.072                              
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 : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
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: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: MLPHARE                                               
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 35.41                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 1500, SODIUM ACETATE, AMMONIUM       
REMARK 280  ACETATE, DTT, PH 4.6, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE    
REMARK 280  277K                                                                
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       20.80000            
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: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D                            
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     ARG A   101                                                      
REMARK 465     GLU A   102                                                      
REMARK 465     ASN A   103                                                      
REMARK 465     PHE A   104                                                      
REMARK 465     PRO A   105                                                      
REMARK 465     GLY A   106                                                      
REMARK 465     VAL A   107                                                      
REMARK 465     SER A   108                                                      
REMARK 465     GLN A   150                                                      
REMARK 465     THR A   151                                                      
REMARK 465     LEU A   152                                                      
REMARK 465     ASP A   153                                                      
REMARK 465     MET B     1                                                      
REMARK 465     PRO B    69                                                      
REMARK 465     PRO B    70                                                      
REMARK 465     PRO B    71                                                      
REMARK 465     PRO B    72                                                      
REMARK 465     GLU B    73                                                      
REMARK 465     ASP B    74                                                      
REMARK 465     ASP B    75                                                      
REMARK 465     GLU B    76                                                      
REMARK 465     ASN B    77                                                      
REMARK 465     LYS B    78                                                      
REMARK 465     GLU B    79                                                      
REMARK 465     LYS B    80                                                      
REMARK 465     ARG B    81                                                      
REMARK 465     THR B    82                                                      
REMARK 465     ASP B    83                                                      
REMARK 465     ASP B    84                                                      
REMARK 465     ILE B    85                                                      
REMARK 465     ILE B   141                                                      
REMARK 465     LYS B   142                                                      
REMARK 465     ASN B   143                                                      
REMARK 465     ASP B   144                                                      
REMARK 465     PHE B   145                                                      
REMARK 465     THR B   146                                                      
REMARK 465     GLU B   147                                                      
REMARK 465     ARG C   101                                                      
REMARK 465     GLU C   102                                                      
REMARK 465     ASN C   103                                                      
REMARK 465     PHE C   104                                                      
REMARK 465     PRO C   105                                                      
REMARK 465     GLY C   106                                                      
REMARK 465     VAL C   107                                                      
REMARK 465     SER C   108                                                      
REMARK 465     GLN C   150                                                      
REMARK 465     THR C   151                                                      
REMARK 465     LEU C   152                                                      
REMARK 465     ASP C   153                                                      
REMARK 465     MET D     1                                                      
REMARK 465     PRO D    69                                                      
REMARK 465     PRO D    70                                                      
REMARK 465     PRO D    71                                                      
REMARK 465     PRO D    72                                                      
REMARK 465     GLU D    73                                                      
REMARK 465     ASP D    74                                                      
REMARK 465     ASP D    75                                                      
REMARK 465     GLU D    76                                                      
REMARK 465     ASN D    77                                                      
REMARK 465     LYS D    78                                                      
REMARK 465     GLU D    79                                                      
REMARK 465     LYS D    80                                                      
REMARK 465     ARG D    81                                                      
REMARK 465     THR D    82                                                      
REMARK 465     ASP D    83                                                      
REMARK 465     ILE D   141                                                      
REMARK 465     LYS D   142                                                      
REMARK 465     ASN D   143                                                      
REMARK 465     ASP D   144                                                      
REMARK 465     PHE D   145                                                      
REMARK 465     THR D   146                                                      
REMARK 465     GLU D   147                                                      
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     PRO B   2    CG   CD                                             
REMARK 470     ASN B 140    CG   OD1  ND2                                       
REMARK 470     ASP C 110    CG   OD1  OD2                                       
REMARK 470     PRO D   2    CG   CD                                             
REMARK 470     ASP D  84    CG   OD1  OD2                                       
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 C   187     O    HOH C   205              2.02            
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    CYS A 136   CB    CYS A 136   SG     -0.098                       
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    PRO B   2   N   -  CA  -  CB  ANGL. DEV. =   7.8 DEGREES          
REMARK 500    GLY B  35   N   -  CA  -  C   ANGL. DEV. = -15.1 DEGREES          
REMARK 500    PRO D   2   N   -  CA  -  CB  ANGL. DEV. =   7.7 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    LEU B  34      -54.76   -127.21                                   
REMARK 500    MET B  36       88.49     46.68                                   
REMARK 500    ASP B  96      134.77    -39.40                                   
REMARK 500    ASP C 110      -15.15    -48.94                                   
REMARK 500    LYS D  22       -9.81    -59.27                                   
REMARK 500    ASP D  43     -165.56    -62.93                                   
REMARK 500    PRO D  44       98.90     -9.12                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1FQV   RELATED DB: PDB                                   
REMARK 900 1FQV IS A COMPLEX OF SKP1 AND SKP2 EXTENDING FROM THE F-BOX TO THE   
REMARK 900 C-TERMINUS                                                           
REMARK 900 RELATED ID: 1FS2   RELATED DB: PDB                                   
REMARK 900 1FS2 IS A COMPLEX BETWEEN SKP1 AND AN ARTIFICIALLY ENGINEERED        
REMARK 900 VERSION OF SKP2                                                      
DBREF  1FS1 A  101   153  UNP    Q13309   SKP2_HUMAN     101    153             
DBREF  1FS1 C  101   153  UNP    Q13309   SKP2_HUMAN     101    153             
DBREF  1FS1 B    1   147  UNP    P63208   SKP1_HUMAN       1    147             
DBREF  1FS1 D    1   147  UNP    P63208   SKP1_HUMAN       1    147             
SEQADV 1FS1     B       UNP  P63208    ASP    37 DELETION                       
SEQADV 1FS1     B       UNP  P63208    ASP    38 DELETION                       
SEQADV 1FS1     B       UNP  P63208    GLU    39 DELETION                       
SEQADV 1FS1     B       UNP  P63208    GLY    40 DELETION                       
SEQADV 1FS1     B       UNP  P63208    ASP    41 DELETION                       
SEQADV 1FS1     B       UNP  P63208    ASP    42 DELETION                       
SEQADV 1FS1     D       UNP  P63208    ASP    37 DELETION                       
SEQADV 1FS1     D       UNP  P63208    ASP    38 DELETION                       
SEQADV 1FS1     D       UNP  P63208    GLU    39 DELETION                       
SEQADV 1FS1     D       UNP  P63208    GLY    40 DELETION                       
SEQADV 1FS1     D       UNP  P63208    ASP    41 DELETION                       
SEQADV 1FS1     D       UNP  P63208    ASP    42 DELETION                       
SEQRES   1 A   53  ARG GLU ASN PHE PRO GLY VAL SER TRP ASP SER LEU PRO          
SEQRES   2 A   53  ASP GLU LEU LEU LEU GLY ILE PHE SER CYS LEU CYS LEU          
SEQRES   3 A   53  PRO GLU LEU LEU LYS VAL SER GLY VAL CYS LYS ARG TRP          
SEQRES   4 A   53  TYR ARG LEU ALA SER ASP GLU SER LEU TRP GLN THR LEU          
SEQRES   5 A   53  ASP                                                          
SEQRES   1 B  141  MET PRO SER ILE LYS LEU GLN SER SER ASP GLY GLU ILE          
SEQRES   2 B  141  PHE GLU VAL ASP VAL GLU ILE ALA LYS GLN SER VAL THR          
SEQRES   3 B  141  ILE LYS THR MET LEU GLU ASP LEU GLY MET ASP PRO VAL          
SEQRES   4 B  141  PRO LEU PRO ASN VAL ASN ALA ALA ILE LEU LYS LYS VAL          
SEQRES   5 B  141  ILE GLN TRP CYS THR HIS HIS LYS ASP ASP PRO PRO PRO          
SEQRES   6 B  141  PRO GLU ASP ASP GLU ASN LYS GLU LYS ARG THR ASP ASP          
SEQRES   7 B  141  ILE PRO VAL TRP ASP GLN GLU PHE LEU LYS VAL ASP GLN          
SEQRES   8 B  141  GLY THR LEU PHE GLU LEU ILE LEU ALA ALA ASN TYR LEU          
SEQRES   9 B  141  ASP ILE LYS GLY LEU LEU ASP VAL THR CYS LYS THR VAL          
SEQRES  10 B  141  ALA ASN MET ILE LYS GLY LYS THR PRO GLU GLU ILE ARG          
SEQRES  11 B  141  LYS THR PHE ASN ILE LYS ASN ASP PHE THR GLU                  
SEQRES   1 C   53  ARG GLU ASN PHE PRO GLY VAL SER TRP ASP SER LEU PRO          
SEQRES   2 C   53  ASP GLU LEU LEU LEU GLY ILE PHE SER CYS LEU CYS LEU          
SEQRES   3 C   53  PRO GLU LEU LEU LYS VAL SER GLY VAL CYS LYS ARG TRP          
SEQRES   4 C   53  TYR ARG LEU ALA SER ASP GLU SER LEU TRP GLN THR LEU          
SEQRES   5 C   53  ASP                                                          
SEQRES   1 D  141  MET PRO SER ILE LYS LEU GLN SER SER ASP GLY GLU ILE          
SEQRES   2 D  141  PHE GLU VAL ASP VAL GLU ILE ALA LYS GLN SER VAL THR          
SEQRES   3 D  141  ILE LYS THR MET LEU GLU ASP LEU GLY MET ASP PRO VAL          
SEQRES   4 D  141  PRO LEU PRO ASN VAL ASN ALA ALA ILE LEU LYS LYS VAL          
SEQRES   5 D  141  ILE GLN TRP CYS THR HIS HIS LYS ASP ASP PRO PRO PRO          
SEQRES   6 D  141  PRO GLU ASP ASP GLU ASN LYS GLU LYS ARG THR ASP ASP          
SEQRES   7 D  141  ILE PRO VAL TRP ASP GLN GLU PHE LEU LYS VAL ASP GLN          
SEQRES   8 D  141  GLY THR LEU PHE GLU LEU ILE LEU ALA ALA ASN TYR LEU          
SEQRES   9 D  141  ASP ILE LYS GLY LEU LEU ASP VAL THR CYS LYS THR VAL          
SEQRES  10 D  141  ALA ASN MET ILE LYS GLY LYS THR PRO GLU GLU ILE ARG          
SEQRES  11 D  141  LYS THR PHE ASN ILE LYS ASN ASP PHE THR GLU                  
FORMUL   5  HOH   *570(H2 O)                                                    
HELIX    1   1 PRO A  113  SER A  122  1                                  10    
HELIX    2   2 CYS A  123  LEU A  124  5                                   2    
HELIX    3   3 CYS A  125  PRO A  127  5                                   3    
HELIX    4   4 GLU A  128  GLY A  134  1                                   7    
HELIX    5   5 CYS A  136  SER A  144  1                                   9    
HELIX    6   6 ASP A  145  TRP A  149  5                                   5    
HELIX    7   7 GLU B   19  GLN B   23  5                                   5    
HELIX    8   8 SER B   24  LEU B   34  1                                  11    
HELIX    9   9 ASN B   51  LYS B   66  1                                  16    
HELIX   10  10 PRO B   86  LEU B   93  1                                   8    
HELIX   11  11 ASP B   96  ASP B  111  1                                  16    
HELIX   12  12 ILE B  112  LYS B  128  1                                  17    
HELIX   13  13 THR B  131  PHE B  139  1                                   9    
HELIX   14  14 PRO C  113  CYS C  123  1                                  11    
HELIX   15  15 LEU C  124  LEU C  124  5                                   1    
HELIX   16  16 CYS C  125  PRO C  127  5                                   3    
HELIX   17  17 GLU C  128  GLY C  134  1                                   7    
HELIX   18  18 CYS C  136  SER C  144  1                                   9    
HELIX   19  19 ASP C  145  TRP C  149  5                                   5    
HELIX   20  20 VAL D   18  LYS D   22  1                                   5    
HELIX   21  21 SER D   24  ASP D   33  1                                  10    
HELIX   22  22 ASN D   51  LYS D   66  1                                  16    
HELIX   23  23 PRO D   86  LEU D   93  1                                   8    
HELIX   24  24 ASP D   96  ASP D  111  1                                  16    
HELIX   25  25 ILE D  112  MET D  126  1                                  15    
HELIX   26  26 THR D  131  ASN D  140  1                                  10    
SHEET    1   A 3 ILE B  13  ASP B  17  0                                        
SHEET    2   A 3 SER B   3  GLN B   7 -1  O  ILE B   4   N  VAL B  16           
SHEET    3   A 3 VAL B  45  PRO B  46  1  N  VAL B  45   O  LYS B   5           
SHEET    1   B 3 ILE D  13  ASP D  17  0                                        
SHEET    2   B 3 SER D   3  GLN D   7 -1  O  ILE D   4   N  VAL D  16           
SHEET    3   B 3 VAL D  45  PRO D  46  1  N  VAL D  45   O  LYS D   5           
CRYST1   46.540   41.600   87.230  90.00  93.42  90.00 P 1 21 1      4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.021487  0.000000  0.001284        0.00000                         
SCALE2      0.000000  0.024038  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011484        0.00000