PDB Short entry for 1ES0
HEADER    IMMUNE SYSTEM                           07-APR-00   1ES0              
TITLE     CRYSTAL STRUCTURE OF THE MURINE CLASS II ALLELE I-A(G7) COMPLEXED WITH
TITLE    2 THE GLUTAMIC ACID DECARBOXYLASE (GAD65) PEPTIDE 207-220              
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: H-2 CLASS II HISTOCOMPATIBILITY ANTIGEN;                   
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: ALPHA CHAIN;                                               
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MOL_ID: 2;                                                           
COMPND   7 MOLECULE: 65 KD GLUTAMIC ACID DECARBOXYLASE+H-2 CLASS II             
COMPND   8 HISTOCOMPATIBILITY ANTIGEN;                                          
COMPND   9 CHAIN: B;                                                            
COMPND  10 FRAGMENT: PEPTIDE (RESIDUES 222-235) + BETA CHAIN;                   
COMPND  11 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: MUS MUSCULUS;                                   
SOURCE   3 ORGANISM_COMMON: MOUSE;                                              
SOURCE   4 ORGANISM_TAXID: 10090;                                               
SOURCE   5 EXPRESSION_SYSTEM_COMMON: INSECT;                                    
SOURCE   6 MOL_ID: 2;                                                           
SOURCE   7 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   8 ORGANISM_COMMON: HUMAN;                                              
SOURCE   9 ORGANISM_TAXID: 9606;                                                
SOURCE  10 EXPRESSION_SYSTEM_COMMON: INSECT                                     
KEYWDS    HISTOCOMPATIBILITY ANTIGEN, CLASS II MHC I-A(G7), IMMUNE SYSTEM       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.L.CORPER,L.TEYTON,I.A.WILSON                                        
REVDAT   5   23-AUG-17 1ES0    1       SOURCE REMARK                            
REVDAT   4   13-JUL-11 1ES0    1       VERSN                                    
REVDAT   3   24-FEB-09 1ES0    1       VERSN                                    
REVDAT   2   01-APR-03 1ES0    1       JRNL                                     
REVDAT   1   28-JUN-00 1ES0    0                                                
JRNL        AUTH   A.L.CORPER,T.STRATMANN,V.APOSTOLOPOULOS,C.A.SCOTT,           
JRNL        AUTH 2 K.C.GARCIA,A.S.KANG,I.A.WILSON,L.TEYTON                      
JRNL        TITL   A STRUCTURAL FRAMEWORK FOR DECIPHERING THE LINK BETWEEN      
JRNL        TITL 2 I-AG7 AND AUTOIMMUNE DIABETES.                               
JRNL        REF    SCIENCE                       V. 288   505 2000              
JRNL        REFN                   ISSN 0036-8075                               
JRNL        PMID   10775108                                                     
JRNL        DOI    10.1126/SCIENCE.288.5465.505                                 
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.60 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) : 2.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 39.96                          
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)   (%) : 99.3                           
REMARK   3   NUMBER OF REFLECTIONS             : 15754                          
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) : 0.210                           
REMARK   3   FREE R VALUE                     : 0.258                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.800                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1541                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.007                           
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) : 2.60                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.69                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.60                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1396                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2760                       
REMARK   3   BIN FREE R VALUE                    : 0.3440                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 9.60                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 149                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.028                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3012                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 76                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 51.80                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 36.10                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 8.00000                                              
REMARK   3    B22 (A**2) : -3.51000                                             
REMARK   3    B33 (A**2) : -4.50000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.30                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.28                            
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) : 0.39                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.40                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.006                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 26.00                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.810                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : GROUP                                     
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 : FLAT MODEL                                           
REMARK   3   KSOL        : 0.35                                                 
REMARK   3   BSOL        : 32.63                                                
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  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : CIS_PEPTIDE.PARAM                              
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : CIS_PEPTIDE.TOP                                
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1ES0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-MAY-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000010843.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 16-JAN-99                          
REMARK 200  TEMPERATURE           (KELVIN) : 96.0                               
REMARK 200  PH                             : 6.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL7-1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.08                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO, TRUNCATE                    
REMARK 200  DATA SCALING SOFTWARE          : CCP4 (TRUNCATE)                    
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 15754                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 39.960                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.3                               
REMARK 200  DATA REDUNDANCY                : 4.200                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.06800                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 15.7000                            
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) : 2.69                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.20                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.35300                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 4.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: I-A(K) - PDB CODE 1IAK                               
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 57.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 16-18% PEG 4000, 0.2 M LICL (PH 6.6),    
REMARK 280  1% MPD, PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 277K     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -X,Y,-Z+1/2                                             
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z                                           
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       48.04200            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       48.04200            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  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       47.57450            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       55.06150            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       47.57450            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       55.06150            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       48.04200            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       47.57450            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       55.06150            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       48.04200            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       47.57450            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       55.06150            
REMARK 290   SMTRY3   8  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: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 5990 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 17770 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -28.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
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     GLU A     1D                                                     
REMARK 465     ASP A     1C                                                     
REMARK 465     ALA A   181                                                      
REMARK 465     ASP A   182                                                      
REMARK 465     LEU A   183                                                      
REMARK 465     VAL A   184                                                      
REMARK 465     PRO A   185                                                      
REMARK 465     ARG A   186                                                      
REMARK 465     GLY B   201P                                                     
REMARK 465     SER B   202P                                                     
REMARK 465     HIS B   203P                                                     
REMARK 465     SER B   204P                                                     
REMARK 465     ARG B   205P                                                     
REMARK 465     GLY B   206P                                                     
REMARK 465     GLY B    -5                                                      
REMARK 465     SER B    -4                                                      
REMARK 465     GLY B    -3                                                      
REMARK 465     SER B    -2                                                      
REMARK 465     GLY B    -1                                                      
REMARK 465     SER B     0                                                      
REMARK 465     GLY B     1                                                      
REMARK 465     ASP B     2                                                      
REMARK 465     SER B     3                                                      
REMARK 465     GLU B     4                                                      
REMARK 465     ARG B   105                                                      
REMARK 465     THR B   106                                                      
REMARK 465     GLU B   107                                                      
REMARK 465     ALA B   108                                                      
REMARK 465     LEU B   109                                                      
REMARK 465     ASN B   110                                                      
REMARK 465     HIS B   111                                                      
REMARK 465     HIS B   112                                                      
REMARK 465     SER B   190                                                      
REMARK 465     ALA B   191                                                      
REMARK 465     ASP B   192                                                      
REMARK 465     LEU B   193                                                      
REMARK 465     VAL B   194                                                      
REMARK 465     PRO B   195                                                      
REMARK 465     ARG B   196                                                      
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     ASP A   1B   CG   OD1  OD2                                       
REMARK 470     LYS A  40    CG   CD   CE   NZ                                   
REMARK 470     TYR B 207P   CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     TYR B 218P   CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     THR B 220P   OG1  CG2                                            
REMARK 470     LYS B  63    CG   CD   CE   NZ                                   
REMARK 470     GLU B  85    CG   CD   OE1  OE2                                  
REMARK 470     ASN B 113    CG   OD1  ND2                                       
REMARK 470     HIS B 166    CG   ND1  CD2  CE1  NE2                             
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    PHE A  48      -80.83    -29.26                                   
REMARK 500    LEU A  51      -70.17   -108.38                                   
REMARK 500    ASP A 158      -33.23     78.63                                   
REMARK 500    ASN B  33      -97.94     66.04                                   
REMARK 500    THR B  90      -98.02   -121.37                                   
REMARK 500    PRO B 165       67.99    -57.95                                   
REMARK 500    GLN B 167      137.21    -37.16                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THIS ENTRY CONTAINS COORDINATES FOR THE EXTRACELLULAR                
REMARK 999 DOMAINS OF THE MURINE MHC CLASS II ALLELE I-A(G7) WITH A             
REMARK 999 FRAGMENT FROM GAD65 (207 - 220) COVALENTLY ATTACHED TO THE           
REMARK 999 FIRST RESIDUE OF THE AMINO TERMINUS OF THE MATURE BETA               
REMARK 999 CHAIN. THE NUMBERING SCHEME FOR THE I-A(G7) RESIDUES IS AS           
REMARK 999 DESCRIBED IN "SEQUENCES OF PROTEINS OF IMMUNOLOGICAL                 
REMARK 999 INTEREST" (1991), EDITED BY E.A. KABAT, T.T. WU, H.M.                
REMARK 999 PERRY, K.S. GOTTESMAN AND C. FOELLER.                                
REMARK 999 DIMERIZATION OF THE I-A(G7) HETERODIMER WAS FACILITATED BY           
REMARK 999 ADDING A LEUCINE ZIPPER TAIL TO THE CARBOXY TERMINUS OF              
REMARK 999 EACH CHAIN. IN ADDITION, A HEXAHISTIDINE SEQUENCE WAS                
REMARK 999 ENGINEERED TO THE CARBOXY TERMINAL END OF THE LEUCINE                
REMARK 999 ZIPPER. THIS ALLOWED THE SECRETED PROTEIN TO BE PURIFIED             
REMARK 999 BY NI-NTA CHROMATOGRAPHY. A THROMBIN CUT SITE WAS                    
REMARK 999 ENGINEERED IN A SPACER SEQUENCE BETWEEN THE CARBOXY                  
REMARK 999 TERMINAL RESIDUE OF EACH CHAIN AND THE LEUCINE ZIPPER-               
REMARK 999 HEXAHISTIDINE SEQUENCE SO THAT MOST OF THE ENGINEERED                
REMARK 999 RESIDUES COULD BE REMOVED FOR CRYSTALLIZATION. AFTER                 
REMARK 999 THROMBIN DIGESTION, EIGHT ENGINEERED RESIDUES (SSADLVPR)             
REMARK 999 REMAINED ATTACHED TO THE CARBOXY TERMINAL END OF EACH                
REMARK 999 I-A(G7) CHAIN.                                                       
REMARK 999 NO ELECTRON DENSITY WAS VISIBLE FOR 1) THE FIRST 2 RESIDUES          
REMARK 999 OF THE ALPHA CHAIN 2) THE LAST 6 RESIDUES OF THE SPACER              
REMARK 999 SEQUENCE ATTACHED TO THE C-TERMINUS OF THE ALPHA CHAIN,              
REMARK 999 3) THE 6 RESIDUE (GSGSGS) LINKER BETWEEN GAD65 AND THE BETA          
REMARK 999 CHAIN, 4) THE FIRST 4 RESIDUES OF THE BETA CHAIN, AND 5)             
REMARK 999 THE LAST 7 RESIDUES OF THE SPACER SEQUENCE ATTACHED TO THE           
REMARK 999 C-TERMINUS OF THE BETA CHAIN. SIX ADDITIONAL RESIDUES                
REMARK 999 (GSHSRG) FROM THE SIGNAL SEQUENCE REMAIN CONNECTED TO THE            
REMARK 999 AMINO TERMINUS OF THE GAD65 PEPTIDE; NO DENSITY IS PRESENT           
REMARK 999 FOR THESE RESIDUES.                                                  
REMARK 999                                                                      
REMARK 999 THE RESIDUE NUMBERING FOR THE TWO PROTEIN CHAINS IS:                 
REMARK 999   A   1B - A 178  : MHC CLASS II ALPHA CHAIN                         
REMARK 999   A 179 -  A 186  : SPACER SEQUENCE                                  
REMARK 999   B 207P - B 220P : RESIDUES 207-220 OF GAD65                        
REMARK 999   B   1  - B 188  : MHC CLASS II BETA CHAIN                          
REMARK 999   B 189  - B 196  : SPACER SEQUENCE                                  
DBREF  1ES0 A    1   178  UNP    P04228   HA2D_MOUSE      24    205             
DBREF  1ES0 B  207P  220P UNP    Q05329   DCE2_HUMAN     222    235             
DBREF  1ES0 B    1   188  GB     387435   AAA39547        28    214             
SEQADV 1ES0 SER A  179  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 SER A  180  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 ALA A  181  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 ASP A  182  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 LEU A  183  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 VAL A  184  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 PRO A  185  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 ARG A  186  UNP  P04228              SEE REMARK 999                 
SEQADV 1ES0 GLY B  201P UNP  Q05329              SEE REMARK 999                 
SEQADV 1ES0 SER B  202P UNP  Q05329              SEE REMARK 999                 
SEQADV 1ES0 HIS B  203P UNP  Q05329              SEE REMARK 999                 
SEQADV 1ES0 SER B  204P UNP  Q05329              SEE REMARK 999                 
SEQADV 1ES0 ARG B  205P UNP  Q05329              SEE REMARK 999                 
SEQADV 1ES0 GLY B  206P UNP  Q05329              SEE REMARK 999                 
SEQADV 1ES0 GLY B   -5  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 SER B   -4  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 GLY B   -3  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 SER B   -2  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 GLY B   -1  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 SER B    0  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 SER B  189  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 SER B  190  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 ALA B  191  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 ASP B  192  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 LEU B  193  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 VAL B  194  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 PRO B  195  GB   387435              SEE REMARK 999                 
SEQADV 1ES0 ARG B  196  GB   387435              SEE REMARK 999                 
SEQRES   1 A  190  GLU ASP ASP ILE GLU ALA ASP HIS VAL GLY PHE TYR GLY          
SEQRES   2 A  190  THR THR VAL TYR GLN SER PRO GLY ASP ILE GLY GLN TYR          
SEQRES   3 A  190  THR HIS GLU PHE ASP GLY ASP GLU LEU PHE TYR VAL ASP          
SEQRES   4 A  190  LEU ASP LYS LYS LYS THR VAL TRP ARG LEU PRO GLU PHE          
SEQRES   5 A  190  GLY GLN LEU ILE LEU PHE GLU PRO GLN GLY GLY LEU GLN          
SEQRES   6 A  190  ASN ILE ALA ALA GLU LYS HIS ASN LEU GLY ILE LEU THR          
SEQRES   7 A  190  LYS ARG SER ASN PHE THR PRO ALA THR ASN GLU ALA PRO          
SEQRES   8 A  190  GLN ALA THR VAL PHE PRO LYS SER PRO VAL LEU LEU GLY          
SEQRES   9 A  190  GLN PRO ASN THR LEU ILE CYS PHE VAL ASP ASN ILE PHE          
SEQRES  10 A  190  PRO PRO VAL ILE ASN ILE THR TRP LEU ARG ASN SER LYS          
SEQRES  11 A  190  SER VAL THR ASP GLY VAL TYR GLU THR SER PHE LEU VAL          
SEQRES  12 A  190  ASN ARG ASP HIS SER PHE HIS LYS LEU SER TYR LEU THR          
SEQRES  13 A  190  PHE ILE PRO SER ASP ASP ASP ILE TYR ASP CYS LYS VAL          
SEQRES  14 A  190  GLU HIS TRP GLY LEU GLU GLU PRO VAL LEU LYS HIS TRP          
SEQRES  15 A  190  SER SER ALA ASP LEU VAL PRO ARG                              
SEQRES   1 B  221  GLY SER HIS SER ARG GLY TYR GLU ILE ALA PRO VAL PHE          
SEQRES   2 B  221  VAL LEU LEU GLU TYR VAL THR GLY SER GLY SER GLY SER          
SEQRES   3 B  221  GLY ASP SER GLU ARG HIS PHE VAL HIS GLN PHE LYS GLY          
SEQRES   4 B  221  GLU CYS TYR PHE THR ASN GLY THR GLN ARG ILE ARG LEU          
SEQRES   5 B  221  VAL THR ARG TYR ILE TYR ASN ARG GLU GLU TYR LEU ARG          
SEQRES   6 B  221  PHE ASP SER ASP VAL GLY GLU TYR ARG ALA VAL THR GLU          
SEQRES   7 B  221  LEU GLY ARG HIS SER ALA GLU TYR TYR ASN LYS GLN TYR          
SEQRES   8 B  221  LEU GLU ARG THR ARG ALA GLU LEU ASP THR ALA CYS ARG          
SEQRES   9 B  221  HIS ASN TYR GLU GLU THR GLU VAL PRO THR SER LEU ARG          
SEQRES  10 B  221  ARG LEU GLU GLN PRO ASN VAL ALA ILE SER LEU SER ARG          
SEQRES  11 B  221  THR GLU ALA LEU ASN HIS HIS ASN THR LEU VAL CYS SER          
SEQRES  12 B  221  VAL THR ASP PHE TYR PRO ALA LYS ILE LYS VAL ARG TRP          
SEQRES  13 B  221  PHE ARG ASN GLY GLN GLU GLU THR VAL GLY VAL SER SER          
SEQRES  14 B  221  THR GLN LEU ILE ARG ASN GLY ASP TRP THR PHE GLN VAL          
SEQRES  15 B  221  LEU VAL MET LEU GLU MET THR PRO HIS GLN GLY GLU VAL          
SEQRES  16 B  221  TYR THR CYS HIS VAL GLU HIS PRO SER LEU LYS SER PRO          
SEQRES  17 B  221  ILE THR VAL GLU TRP SER SER ALA ASP LEU VAL PRO ARG          
FORMUL   3  HOH   *76(H2 O)                                                     
HELIX    1   1 GLU A   47  LEU A   51  5                                   5    
HELIX    2   2 GLU A   55  SER A   77  1                                  23    
HELIX    3   3 GLY B   54  LEU B   68  1                                  13    
HELIX    4   4 TYR B   66  ALA B   78  1                                  12    
HELIX    5   5 ALA B   78  THR B   86  1                                   9    
HELIX    6   6 THR B   90  ARG B   94  5                                   5    
SHEET    1   A 8 LYS A  40  TRP A  43  0                                        
SHEET    2   A 8 ASP A  29  ASP A  35 -1  O  TYR A  33   N  VAL A  42           
SHEET    3   A 8 ILE A  19  PHE A  26 -1  O  TYR A  22   N  VAL A  34           
SHEET    4   A 8 HIS A   4  SER A  15 -1  N  PHE A   7   O  GLU A  25           
SHEET    5   A 8 PHE B   7  THR B  18 -1  N  PHE B   7   O  SER A  15           
SHEET    6   A 8 ARG B  23  TYR B  32 -1  O  ARG B  23   N  THR B  18           
SHEET    7   A 8 GLU B  35  ASP B  41 -1  O  GLU B  35   N  TYR B  32           
SHEET    8   A 8 TYR B  47  ALA B  49 -1  N  ARG B  48   O  ARG B  39           
SHEET    1   B 4 GLN A  88  PRO A  93  0                                        
SHEET    2   B 4 ASN A 103  ILE A 112 -1  N  ILE A 106   O  PHE A  92           
SHEET    3   B 4 PHE A 145  PHE A 153 -1  O  PHE A 145   N  ILE A 112           
SHEET    4   B 4 VAL A 132  GLU A 134 -1  O  TYR A 133   N  TYR A 150           
SHEET    1   C 4 GLN A  88  PRO A  93  0                                        
SHEET    2   C 4 ASN A 103  ILE A 112 -1  N  ILE A 106   O  PHE A  92           
SHEET    3   C 4 PHE A 145  PHE A 153 -1  O  PHE A 145   N  ILE A 112           
SHEET    4   C 4 LEU A 138  VAL A 139 -1  N  LEU A 138   O  HIS A 146           
SHEET    1   D 4 LYS A 126  VAL A 128  0                                        
SHEET    2   D 4 ASN A 118  ARG A 123 -1  O  TRP A 121   N  VAL A 128           
SHEET    3   D 4 ILE A 160  GLU A 166 -1  N  ASP A 162   O  LEU A 122           
SHEET    4   D 4 VAL A 174  SER A 179 -1  O  VAL A 174   N  VAL A 165           
SHEET    1   E 4 ASN B  98  LEU B 103  0                                        
SHEET    2   E 4 THR B 114  PHE B 122 -1  N  VAL B 116   O  SER B 102           
SHEET    3   E 4 PHE B 155  GLU B 162 -1  N  PHE B 155   O  PHE B 122           
SHEET    4   E 4 VAL B 142  SER B 144 -1  O  SER B 143   N  MET B 160           
SHEET    1   F 4 ASN B  98  LEU B 103  0                                        
SHEET    2   F 4 THR B 114  PHE B 122 -1  N  VAL B 116   O  SER B 102           
SHEET    3   F 4 PHE B 155  GLU B 162 -1  N  PHE B 155   O  PHE B 122           
SHEET    4   F 4 ILE B 148  ARG B 149 -1  N  ILE B 148   O  GLN B 156           
SHEET    1   G 4 GLN B 136  GLU B 137  0                                        
SHEET    2   G 4 LYS B 128  ARG B 133 -1  N  ARG B 133   O  GLN B 136           
SHEET    3   G 4 TYR B 171  GLU B 176 -1  N  THR B 172   O  PHE B 132           
SHEET    4   G 4 ILE B 184  TRP B 188 -1  O  ILE B 184   N  VAL B 175           
SSBOND   1 CYS A  107    CYS A  163                          1555   1555  2.03  
SSBOND   2 CYS B   15    CYS B   79                          1555   1555  2.04  
SSBOND   3 CYS B  117    CYS B  173                          1555   1555  2.03  
CISPEP   1 SER A   15    PRO A   16          0         0.67                     
CISPEP   2 PHE A  113    PRO A  114          0        -0.74                     
CISPEP   3 TYR B  123    PRO B  124          0        -0.08                     
CRYST1   95.149  110.123   96.084  90.00  90.00  90.00 C 2 2 21      8          
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      0.010510  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.009081  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.010408        0.00000