HEADER    IMMUNE SYSTEM                           28-JAN-10   2X44              
TITLE     STRUCTURE OF A STRAND-SWAPPED DIMERIC FORM OF CTLA-4                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CYTOTOXIC T-LYMPHOCYTE PROTEIN 4;                          
COMPND   3 CHAIN: D;                                                            
COMPND   4 FRAGMENT: RESIDUES 36-161;                                           
COMPND   5 SYNONYM: CYTOTOXIC T-LYMPHOCYTE-ASSOCIATED ANTIGEN 4, CTLA-4, CD152, 
COMPND   6 CYTOTOXIC T-LYMPHOCYTE ANTIGEN 4;                                    
COMPND   7 ENGINEERED: YES;                                                     
COMPND   8 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 CELL_LINE: JURKAT;                                                   
SOURCE   6 TISSUE: BLOOD;                                                       
SOURCE   7 CELL: T-LYMPHOCYTE;                                                  
SOURCE   8 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   9 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE  10 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE  11 OTHER_DETAILS: CDNA GENERATED DIRECTLY FROM JURKAT CELLS, CLONED AND 
SOURCE  12 MUTATED CYS122SER.                                                   
KEYWDS    IMMUNE SYSTEM, AMYLOIDOGENIC, SYSTEMIC LUPUS ERYTHEMATOSUS,           
KEYWDS   2 IMMUNOGLOBULIN DOMAIN, MEMBRANE, GLYCOPROTEIN, TRANSMEMBRANE         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.F.-P.SONNEN,C.YU,E.J.EVANS,D.I.STUART,S.J.DAVIS,R.J.C.GILBERT       
REVDAT   5   20-NOV-24 2X44    1       REMARK                                   
REVDAT   4   20-DEC-23 2X44    1       REMARK                                   
REVDAT   3   10-AUG-11 2X44    1       JRNL   REMARK                            
REVDAT   2   13-JUL-11 2X44    1       VERSN                                    
REVDAT   1   07-APR-10 2X44    0                                                
JRNL        AUTH   A.F.SONNEN,C.YU,E.J.EVANS,D.I.STUART,S.J.DAVIS,R.J.C.GILBERT 
JRNL        TITL   DOMAIN METASTABILITY: A MOLECULAR BASIS FOR IMMUNOGLOBULIN   
JRNL        TITL 2 DEPOSITION?                                                  
JRNL        REF    J.MOL.BIOL.                   V. 399   207 2010              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   20394753                                                     
JRNL        DOI    10.1016/J.JMB.2010.04.011                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0047                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 18.60                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 89.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 4289                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.194                           
REMARK   3   R VALUE            (WORKING SET) : 0.192                           
REMARK   3   FREE R VALUE                     : 0.245                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.200                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 189                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.60                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.67                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 226                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 64.40                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2430                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 11                           
REMARK   3   BIN FREE R VALUE                    : 0.2370                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 906                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 50                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   B VALUE TYPE : LIKELY RESIDUAL                                     
REMARK   3   FROM WILSON PLOT           (A**2) : 58.27                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 22.85                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -1.30000                                             
REMARK   3    B22 (A**2) : -1.30000                                             
REMARK   3    B33 (A**2) : 1.96000                                              
REMARK   3    B12 (A**2) : -0.65000                                             
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.783         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.318         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.243         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 26.265        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.941                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.903                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):   932 ; 0.006 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):   603 ; 0.001 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  1270 ; 1.024 ; 1.975       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  1482 ; 0.905 ; 3.005       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   122 ; 5.562 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    35 ;31.691 ;24.857       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   154 ;17.257 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     4 ;13.121 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   150 ; 0.061 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1040 ; 0.003 ; 0.021       
REMARK   3   GENERAL PLANES OTHERS             (A):   172 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):   606 ; 3.142 ; 3.000       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   247 ; 0.877 ; 3.000       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):   982 ; 5.254 ; 3.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   326 ; 6.670 ; 4.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   288 ;10.460 ; 6.000       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 1                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 2                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   D     0        D   120                          
REMARK   3    RESIDUE RANGE :   D  2001        D  2050                          
REMARK   3    ORIGIN FOR THE GROUP (A):  18.3210  -3.4420  15.7090              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2528 T22:   0.3720                                     
REMARK   3      T33:   0.2383 T12:  -0.0337                                     
REMARK   3      T13:   0.0303 T23:  -0.0013                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   4.2456 L22:   1.0956                                     
REMARK   3      L33:   3.5972 L12:   2.0074                                     
REMARK   3      L13:  -3.8904 L23:  -1.8989                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0304 S12:  -0.5276 S13:  -0.1545                       
REMARK   3      S21:  -0.0754 S22:  -0.0998 S23:  -0.0647                       
REMARK   3      S31:   0.0625 S32:   0.3922 S33:   0.1301                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS. ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY.            
REMARK   4                                                                      
REMARK   4 2X44 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 28-JAN-10.                  
REMARK 100 THE DEPOSITION ID IS D_1290042660.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 17-FEB-06                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU                             
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MAR SCANNER 345 MM PLATE           
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XDS                                
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 4289                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 18.600                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 85.0                               
REMARK 200  DATA REDUNDANCY                : 22.10                              
REMARK 200  R MERGE                    (I) : 0.04000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 29.1000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.70                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 45.8                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 21.30                              
REMARK 200  R MERGE FOR SHELL          (I) : 0.20000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 9.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: PDB ENTRY 1I81                                       
REMARK 200                                                                      
REMARK 200 REMARK: NONE                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 57.16                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.87                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.02 M MAGNESIUM CHLORIDE, 0.1 M HEPES   
REMARK 280  PH 7.5, 22 % W/V POLYACRYLIC ACID 5100 SODIUM SALT, 0.4 M NDSB-     
REMARK 280  256 (OR 6 % 1,6-DIAMINOHEXANE).                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+1/3                                            
REMARK 290       3555   -X+Y,-X,Z+2/3                                           
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z+2/3                                           
REMARK 290       6555   -X,-X+Y,-Z+1/3                                          
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       46.70033            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       93.40067            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       93.40067            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       46.70033            
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 STRUCTURE IS A DOMAIN SWAPPED DIMER OF CTLA-4            
REMARK 300  WHICH CAN BE DERIVED BY APPLYING THE CRYSTALLOGRAPHIC SYMMETRY.     
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: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 4780 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 13400 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -34.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350   BIOMT1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   2 -0.866025  0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       46.70033            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 ENGINEERED RESIDUE IN CHAIN D, CYS 157 TO SER                        
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     PRO D   121                                                      
REMARK 465     SER D   122                                                      
REMARK 465     PRO D   123                                                      
REMARK 465     ASP D   124                                                      
REMARK 465     SER D   125                                                      
REMARK 465     ASP D   126                                                      
REMARK 465     LEU D   127                                                      
REMARK 465     VAL D   128                                                      
REMARK 465     PRO D   129                                                      
REMARK 465     ARG D   130                                                      
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    SER D  44      -10.22     74.41                                   
REMARK 500    ASN D  75       54.49    -96.82                                   
REMARK 500    PRO D 119     -157.86    -91.62                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1AH1   RELATED DB: PDB                                   
REMARK 900 CTLA-4, NMR, 20 STRUCTURES                                           
REMARK 900 RELATED ID: 1H6E   RELATED DB: PDB                                   
REMARK 900 MU2 ADAPTIN SUBUNIT (AP50) OF AP2 ADAPTOR ( SECOND DOMAIN),          
REMARK 900 COMPLEXED WITH CTLA-4 INTERNALIZATION PEPTIDE TTGVYVKMPPT            
REMARK 900 RELATED ID: 1I8L   RELATED DB: PDB                                   
REMARK 900 HUMAN B7-1/CTLA-4 CO-STIMULATORY COMPLEX                             
REMARK 900 RELATED ID: 1I85   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE CTLA-4/B7-2 COMPLEX                         
DBREF  2X44 D    0     0  PDB    2X44     2X44             0      0             
DBREF  2X44 D    1   126  UNP    P16410   CTLA4_HUMAN     36    161             
DBREF  2X44 D  127   130  PDB    2X44     2X44           127    130             
SEQADV 2X44 SER D  122  UNP  P16410    CYS   157 ENGINEERED MUTATION            
SEQRES   1 D  131  MET LYS ALA MET HIS VAL ALA GLN PRO ALA VAL VAL LEU          
SEQRES   2 D  131  ALA SER SER ARG GLY ILE ALA SER PHE VAL CYS GLU TYR          
SEQRES   3 D  131  ALA SER PRO GLY LYS ALA THR GLU VAL ARG VAL THR VAL          
SEQRES   4 D  131  LEU ARG GLN ALA ASP SER GLN VAL THR GLU VAL CYS ALA          
SEQRES   5 D  131  ALA THR TYR MET MET GLY ASN GLU LEU THR PHE LEU ASP          
SEQRES   6 D  131  ASP SER ILE CYS THR GLY THR SER SER GLY ASN GLN VAL          
SEQRES   7 D  131  ASN LEU THR ILE GLN GLY LEU ARG ALA MET ASP THR GLY          
SEQRES   8 D  131  LEU TYR ILE CYS LYS VAL GLU LEU MET TYR PRO PRO PRO          
SEQRES   9 D  131  TYR TYR LEU GLY ILE GLY ASN GLY THR GLN ILE TYR VAL          
SEQRES  10 D  131  ILE ASP PRO GLU PRO SER PRO ASP SER ASP LEU VAL PRO          
SEQRES  11 D  131  ARG                                                          
FORMUL   2  HOH   *50(H2 O)                                                     
HELIX    1   1 ARG D   85  THR D   89  5                                   5    
SHEET    1  DA 4 VAL D   5  ALA D   6  0                                        
SHEET    2  DA 4 ALA D  19  TYR D  25 -1  O  GLU D  24   N  ALA D   6           
SHEET    3  DA 4 GLN D  76  ILE D  81 -1  O  VAL D  77   N  CYS D  23           
SHEET    4  DA 4 CYS D  68  SER D  72 -1  O  THR D  69   N  THR D  80           
SHEET    1  DB 3 GLN D  45  TYR D  54  0                                        
SHEET    2  DB 3 GLU D  33  ALA D  42 -1  O  VAL D  34   N  TYR D  54           
SHEET    3  DB 3 LEU D  91  MET D  99 -1  O  LEU D  91   N  GLN D  41           
SSBOND   1 CYS D   23    CYS D   94                          1555   1555  2.03  
SSBOND   2 CYS D   50    CYS D   68                          1555   1555  2.03  
CRYST1   42.951   42.951  140.101  90.00  90.00 120.00 P 31 2 1      6          
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      0.023282  0.013442  0.000000        0.00000                         
SCALE2      0.000000  0.026884  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007138        0.00000