PDB Short entry for 1I85
HEADER    IMMUNE SYSTEM                           12-MAR-01   1I85              
TITLE     CRYSTAL STRUCTURE OF THE CTLA-4/B7-2 COMPLEX                          
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: T LYMPHOCYTE ACTIVATION ANTIGEN CD86;                      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: IG V-TYPE (RECEPTOR BINDING) DOMAIN;                       
COMPND   5 SYNONYM: B7-2;                                                       
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MOL_ID: 2;                                                           
COMPND   8 MOLECULE: CYTOTOXIC T-LYMPHOCYTE-ASSOCIATED PROTEIN 4;               
COMPND   9 CHAIN: C, D;                                                         
COMPND  10 FRAGMENT: EXTRACELLULAR DOMAIN;                                      
COMPND  11 SYNONYM: CTLA-4;                                                     
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 GENE: CD86;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3);                                
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET3A;                                    
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE  13 ORGANISM_COMMON: HUMAN;                                              
SOURCE  14 ORGANISM_TAXID: 9606;                                                
SOURCE  15 GENE: CTLA4;                                                         
SOURCE  16 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE  17 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE  18 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3);                                
SOURCE  19 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  20 EXPRESSION_SYSTEM_PLASMID: PET3A                                     
KEYWDS    IG V-TYPE DOMAIN, IMMUNE SYSTEM                                       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.-C.D.SCHWARTZ,X.ZHANG,A.A.FEDOROV,S.G.NATHENSON,S.C.ALMO            
REVDAT   3   24-FEB-09 1I85    1       VERSN                                    
REVDAT   2   01-APR-03 1I85    1       JRNL                                     
REVDAT   1   04-APR-01 1I85    0                                                
JRNL        AUTH   J.C.SCHWARTZ,X.ZHANG,A.A.FEDOROV,S.G.NATHENSON,              
JRNL        AUTH 2 S.C.ALMO                                                     
JRNL        TITL   STRUCTURAL BASIS FOR CO-STIMULATION BY THE HUMAN             
JRNL        TITL 2 CTLA-4/B7-2 COMPLEX.                                         
JRNL        REF    NATURE                        V. 410   604 2001              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   11279501                                                     
JRNL        DOI    10.1038/35069112                                             
REMARK   1                                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 0.9                                              
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 : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 1.200                          
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             : 6516                           
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 SET) : 0.217                           
REMARK   3   FREE R VALUE                     : 0.300                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 606                             
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           : 10                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 3.20                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.31                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 56.30                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 415                          
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3720                       
REMARK   3   BIN FREE R VALUE                    : 0.4190                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 10.00                        
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 61                           
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            : 3515                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 0                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 20.40                          
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) : 0.38                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.69                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.52                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.008                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.30                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 25.30                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.97                            
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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1I85 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 19-MAR-01.                  
REMARK 100 THE RCSB ID CODE IS RCSB013024.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-JAN-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X9B                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.9800                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 7080                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 3.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 25.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 78.8                               
REMARK 200  DATA REDUNDANCY                : 2.400                              
REMARK 200  R MERGE                    (I) : 0.12100                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 6.6000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.31                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 79.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.30                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.32100                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 52.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.59                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG20K, HEPES, PH 7.0, VAPOR             
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 298K                           
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       27.28000            
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 300 REMARK: THE CTLA-4 HOMODIMER IS GENERATED BY CHAIN D AND THE         
REMARK 300 TRANSLATONAL SYMMETRY MATE OF CHAIN C (APPLY THE OPERATOR X,Y,Z+     
REMARK 300 1 TO CHAIN C)                                                        
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     MET B     0                                                      
REMARK 465     LYS C     1                                                      
REMARK 465     ALA C     2                                                      
REMARK 465     PRO C   121                                                      
REMARK 465     CYS C   122                                                      
REMARK 465     PRO C   123                                                      
REMARK 465     ASP C   124                                                      
REMARK 465     SER C   125                                                      
REMARK 465     ASP C   126                                                      
REMARK 465     LYS D     1                                                      
REMARK 465     ALA D     2                                                      
REMARK 465     SER D    27                                                      
REMARK 465     PRO D    28                                                      
REMARK 465     GLY D    29                                                      
REMARK 465     LYS D    30                                                      
REMARK 465     ALA D    42                                                      
REMARK 465     ASP D    43                                                      
REMARK 465     SER D    44                                                      
REMARK 465     PRO D   121                                                      
REMARK 465     CYS D   122                                                      
REMARK 465     PRO D   123                                                      
REMARK 465     ASP D   124                                                      
REMARK 465     SER D   125                                                      
REMARK 465     ASP D   126                                                      
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     THR C 112    OG1  CG2                                            
REMARK 470     THR D 112    OG1  CG2                                            
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    VAL D   116     N    ASP D   118              2.19            
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 A   1       91.52    167.41                                   
REMARK 500    GLU A   9     -160.08   -101.47                                   
REMARK 500    GLN A  16       -3.64     60.64                                   
REMARK 500    ASN A  19      122.36    -24.86                                   
REMARK 500    GLN A  21       42.86    -84.58                                   
REMARK 500    ASN A  22       99.15      9.34                                   
REMARK 500    LEU A  25       -0.89    -50.71                                   
REMARK 500    GLU A  27       32.46    -95.61                                   
REMARK 500    LEU A  40      -82.95    -86.73                                   
REMARK 500    LEU A  45       31.97     25.96                                   
REMARK 500    ARG A  60       46.55   -166.38                                   
REMARK 500    SER A  62      113.31   -164.91                                   
REMARK 500    SER A  65      -11.11    -48.06                                   
REMARK 500    TRP A  68       -8.68     60.08                                   
REMARK 500    THR A  69     -175.56    -62.40                                   
REMARK 500    LYS A  80       94.56    -49.38                                   
REMARK 500    LYS A  90       94.65    -59.56                                   
REMARK 500    GLN B  16      -10.30     66.35                                   
REMARK 500    PHE B  17      160.20    -49.64                                   
REMARK 500    ALA B  18       65.52   -153.24                                   
REMARK 500    ASN B  19      116.87    -17.29                                   
REMARK 500    SER B  20      -61.34   -103.66                                   
REMARK 500    GLN B  21       42.43    -80.79                                   
REMARK 500    ASN B  22      100.62     12.54                                   
REMARK 500    LEU B  25        3.22    -62.34                                   
REMARK 500    ASP B  34     -160.14   -102.79                                   
REMARK 500    LEU B  40      -81.66    -90.03                                   
REMARK 500    LEU B  45       33.61     25.64                                   
REMARK 500    ASP B  51      -37.55    -38.88                                   
REMARK 500    ARG B  60       43.37   -153.89                                   
REMARK 500    SER B  62      140.49   -172.40                                   
REMARK 500    TRP B  68       11.65     51.47                                   
REMARK 500    LEU B  70      103.32   -166.02                                   
REMARK 500    ASN B  74       74.27     34.34                                   
REMARK 500    LYS B  80       95.74    -55.88                                   
REMARK 500    LYS B  90       85.40    -58.96                                   
REMARK 500    GLN B 100      114.91   -162.03                                   
REMARK 500    LYS C  30      139.75    173.96                                   
REMARK 500    ALA C  31      131.41    -34.37                                   
REMARK 500    ARG C  40      124.44   -177.68                                   
REMARK 500    ALA C  42     -103.55    -91.02                                   
REMARK 500    SER C  44      -12.59   -175.61                                   
REMARK 500    MET C  55     -171.11    -63.54                                   
REMARK 500    ASP C  64      -37.11    -35.34                                   
REMARK 500    SER C  66     -144.76    -56.50                                   
REMARK 500    SER C  73       84.69   -174.39                                   
REMARK 500    ASN C  75      -23.84     60.61                                   
REMARK 500    THR C  89      113.93    -22.83                                   
REMARK 500    MET C  99     -153.75    -67.65                                   
REMARK 500    TYR C 104     -168.75    -67.33                                   
REMARK 500    TYR C 105      105.73    171.30                                   
REMARK 500    ILE C 117       70.03    -36.96                                   
REMARK 500    ASP C 118       81.91    179.81                                   
REMARK 500    HIS D   4      107.61   -172.00                                   
REMARK 500    THR D  32      -34.31   -150.70                                   
REMARK 500    ARG D  40      118.87   -169.35                                   
REMARK 500    MET D  55     -163.55    -68.55                                   
REMARK 500    THR D  61      -68.17   -121.81                                   
REMARK 500    PHE D  62       76.95     58.11                                   
REMARK 500    LEU D  63     -105.85     41.40                                   
REMARK 500    ASP D  64      -20.47   -176.28                                   
REMARK 500    SER D  73       78.73   -167.26                                   
REMARK 500    ASN D  75      -48.03     62.16                                   
REMARK 500    THR D  89      130.26    -30.84                                   
REMARK 500    MET D  99     -158.45    -64.05                                   
REMARK 500    TYR D 104     -176.47    -67.25                                   
REMARK 500    TYR D 105      123.50    177.74                                   
REMARK 500    ILE D 117       76.03    -41.82                                   
REMARK 500    ASP D 118       86.26    171.47                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1I85 A    1   109  UNP    P42081   CD86_HUMAN      26    134             
DBREF  1I85 B    1   109  UNP    P42081   CD86_HUMAN      26    134             
DBREF  1I85 C    1   126  UNP    P16410   CTLA4_HUMAN     36    161             
DBREF  1I85 D    1   126  UNP    P16410   CTLA4_HUMAN     36    161             
SEQADV 1I85 MET A    0  UNP  P42081              INITIATING METHIONINE          
SEQADV 1I85 MET B    0  UNP  P42081              INITIATING METHIONINE          
SEQADV 1I85 MET C   56  UNP  P16410    THR    91 SEE REMARK 999                 
SEQADV 1I85 MET D   56  UNP  P16410    THR    91 SEE REMARK 999                 
SEQRES   1 A  110  MET LEU LYS ILE GLN ALA TYR PHE ASN GLU THR ALA ASP          
SEQRES   2 A  110  LEU PRO CYS GLN PHE ALA ASN SER GLN ASN GLN SER LEU          
SEQRES   3 A  110  SER GLU LEU VAL VAL PHE TRP GLN ASP GLN GLU ASN LEU          
SEQRES   4 A  110  VAL LEU ASN GLU VAL TYR LEU GLY LYS GLU LYS PHE ASP          
SEQRES   5 A  110  SER VAL HIS SER LYS TYR MET GLY ARG THR SER PHE ASP          
SEQRES   6 A  110  SER ASP SER TRP THR LEU ARG LEU HIS ASN LEU GLN ILE          
SEQRES   7 A  110  LYS ASP LYS GLY LEU TYR GLN CYS ILE ILE HIS HIS LYS          
SEQRES   8 A  110  LYS PRO THR GLY MET ILE ARG ILE HIS GLN MET ASN SER          
SEQRES   9 A  110  GLU LEU SER VAL LEU ALA                                      
SEQRES   1 B  110  MET LEU LYS ILE GLN ALA TYR PHE ASN GLU THR ALA ASP          
SEQRES   2 B  110  LEU PRO CYS GLN PHE ALA ASN SER GLN ASN GLN SER LEU          
SEQRES   3 B  110  SER GLU LEU VAL VAL PHE TRP GLN ASP GLN GLU ASN LEU          
SEQRES   4 B  110  VAL LEU ASN GLU VAL TYR LEU GLY LYS GLU LYS PHE ASP          
SEQRES   5 B  110  SER VAL HIS SER LYS TYR MET GLY ARG THR SER PHE ASP          
SEQRES   6 B  110  SER ASP SER TRP THR LEU ARG LEU HIS ASN LEU GLN ILE          
SEQRES   7 B  110  LYS ASP LYS GLY LEU TYR GLN CYS ILE ILE HIS HIS LYS          
SEQRES   8 B  110  LYS PRO THR GLY MET ILE ARG ILE HIS GLN MET ASN SER          
SEQRES   9 B  110  GLU LEU SER VAL LEU ALA                                      
SEQRES   1 C  126  LYS ALA MET HIS VAL ALA GLN PRO ALA VAL VAL LEU ALA          
SEQRES   2 C  126  SER SER ARG GLY ILE ALA SER PHE VAL CYS GLU TYR ALA          
SEQRES   3 C  126  SER PRO GLY LYS ALA THR GLU VAL ARG VAL THR VAL LEU          
SEQRES   4 C  126  ARG GLN ALA ASP SER GLN VAL THR GLU VAL CYS ALA ALA          
SEQRES   5 C  126  THR TYR MET MET GLY ASN GLU LEU THR PHE LEU ASP ASP          
SEQRES   6 C  126  SER ILE CYS THR GLY THR SER SER GLY ASN GLN VAL ASN          
SEQRES   7 C  126  LEU THR ILE GLN GLY LEU ARG ALA MET ASP THR GLY LEU          
SEQRES   8 C  126  TYR ILE CYS LYS VAL GLU LEU MET TYR PRO PRO PRO TYR          
SEQRES   9 C  126  TYR LEU GLY ILE GLY ASN GLY THR GLN ILE TYR VAL ILE          
SEQRES  10 C  126  ASP PRO GLU PRO CYS PRO ASP SER ASP                          
SEQRES   1 D  126  LYS ALA MET HIS VAL ALA GLN PRO ALA VAL VAL LEU ALA          
SEQRES   2 D  126  SER SER ARG GLY ILE ALA SER PHE VAL CYS GLU TYR ALA          
SEQRES   3 D  126  SER PRO GLY LYS ALA THR GLU VAL ARG VAL THR VAL LEU          
SEQRES   4 D  126  ARG GLN ALA ASP SER GLN VAL THR GLU VAL CYS ALA ALA          
SEQRES   5 D  126  THR TYR MET MET GLY ASN GLU LEU THR PHE LEU ASP ASP          
SEQRES   6 D  126  SER ILE CYS THR GLY THR SER SER GLY ASN GLN VAL ASN          
SEQRES   7 D  126  LEU THR ILE GLN GLY LEU ARG ALA MET ASP THR GLY LEU          
SEQRES   8 D  126  TYR ILE CYS LYS VAL GLU LEU MET TYR PRO PRO PRO TYR          
SEQRES   9 D  126  TYR LEU GLY ILE GLY ASN GLY THR GLN ILE TYR VAL ILE          
SEQRES  10 D  126  ASP PRO GLU PRO CYS PRO ASP SER ASP                          
SHEET    1   A 5 LYS A   2  TYR A   6  0                                        
SHEET    2   A 5 ARG A  97  LEU A 108  1  O  GLU A 104   N  ILE A   3           
SHEET    3   A 5 LEU A  82  HIS A  88 -1  N  TYR A  83   O  SER A 103           
SHEET    4   A 5 VAL A  29  GLN A  33 -1  O  VAL A  29   N  HIS A  88           
SHEET    5   A 5 VAL A  39  VAL A  43 -1  N  LEU A  40   O  TRP A  32           
SHEET    1   B 3 ALA A  11  LEU A  13  0                                        
SHEET    2   B 3 LEU A  70  LEU A  72 -1  O  LEU A  70   N  LEU A  13           
SHEET    3   B 3 THR A  61  PHE A  63 -1  O  SER A  62   N  ARG A  71           
SHEET    1   C 6 LYS B   2  TYR B   6  0                                        
SHEET    2   C 6 ARG B  97  LEU B 108  1  O  GLU B 104   N  ILE B   3           
SHEET    3   C 6 LEU B  82  HIS B  88 -1  N  TYR B  83   O  SER B 103           
SHEET    4   C 6 VAL B  29  GLN B  33 -1  O  VAL B  29   N  HIS B  88           
SHEET    5   C 6 VAL B  39  TYR B  44 -1  N  LEU B  40   O  TRP B  32           
SHEET    6   C 6 LYS B  47  GLU B  48 -1  N  LYS B  47   O  TYR B  44           
SHEET    1   D 3 ALA B  11  ASP B  12  0                                        
SHEET    2   D 3 LEU B  70  LEU B  72 -1  N  LEU B  72   O  ALA B  11           
SHEET    3   D 3 THR B  61  PHE B  63 -1  N  SER B  62   O  ARG B  71           
SHEET    1   E 4 VAL C   5  ALA C   6  0                                        
SHEET    2   E 4 VAL C  22  TYR C  25 -1  N  GLU C  24   O  ALA C   6           
SHEET    3   E 4 GLN C  76  ASN C  78 -1  N  VAL C  77   O  CYS C  23           
SHEET    4   E 4 THR C  71  SER C  72 -1  O  THR C  71   N  ASN C  78           
SHEET    1   F 3 VAL C  10  LEU C  12  0                                        
SHEET    2   F 3 THR C 112  TYR C 115  1  O  GLN C 113   N  VAL C  11           
SHEET    3   F 3 GLY C  90  TYR C  92 -1  O  GLY C  90   N  ILE C 114           
SHEET    1   G 4 CYS C  50  TYR C  54  0                                        
SHEET    2   G 4 VAL C  34  VAL C  38 -1  O  VAL C  34   N  TYR C  54           
SHEET    3   G 4 CYS C  94  LEU C  98 -1  O  LYS C  95   N  THR C  37           
SHEET    4   G 4 LEU C 106  GLY C 107 -1  O  GLY C 107   N  VAL C  96           
SHEET    1   H 4 VAL D   5  ALA D   6  0                                        
SHEET    2   H 4 VAL D  22  TYR D  25 -1  N  GLU D  24   O  ALA D   6           
SHEET    3   H 4 GLN D  76  ASN D  78 -1  O  VAL D  77   N  CYS D  23           
SHEET    4   H 4 THR D  71  SER D  72 -1  O  THR D  71   N  ASN D  78           
SHEET    1   I 3 VAL D  10  LEU D  12  0                                        
SHEET    2   I 3 THR D 112  TYR D 115  1  O  GLN D 113   N  VAL D  11           
SHEET    3   I 3 GLY D  90  TYR D  92 -1  O  GLY D  90   N  ILE D 114           
SHEET    1   J 4 CYS D  50  ALA D  51  0                                        
SHEET    2   J 4 VAL D  34  VAL D  38 -1  N  VAL D  38   O  CYS D  50           
SHEET    3   J 4 CYS D  94  LEU D  98 -1  N  LYS D  95   O  THR D  37           
SHEET    4   J 4 LEU D 106  ILE D 108 -1  O  GLY D 107   N  VAL D  96           
SSBOND   1 CYS A   15    CYS A   85                          1555   1555  2.03  
SSBOND   2 CYS B   15    CYS B   85                          1555   1555  2.03  
SSBOND   3 CYS C   23    CYS C   94                          1555   1555  2.03  
SSBOND   4 CYS C   50    CYS C   68                          1555   1555  2.02  
SSBOND   5 CYS D   23    CYS D   94                          1555   1555  2.02  
SSBOND   6 CYS D   50    CYS D   68                          1555   1555  2.04  
CISPEP   1 TYR C  100    PRO C  101          0        -0.55                     
CISPEP   2 PRO C  102    PRO C  103          0         0.20                     
CISPEP   3 TYR D  100    PRO D  101          0        -0.06                     
CISPEP   4 PRO D  102    PRO D  103          0         0.21                     
CRYST1   47.850   54.560  103.090  90.00  91.63  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      0.020900  0.000000  0.000590        0.00000                         
SCALE2      0.000000  0.018330  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009700        0.00000