PDB Short entry for 3FN3
HEADER    IMMUNE SYSTEM                           23-DEC-08   3FN3              
TITLE     DIMERIC STRUCTURE OF PD-L1                                            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROGRAMMED CELL DEATH 1 LIGAND 1;                          
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: EXTRACELLULAR DOMAIN;                                      
COMPND   5 SYNONYM: B7-H1, PD-L1, PROGRAMMED DEATH LIGAND 1, PDCD1 LIGAND 1, B7 
COMPND   6 HOMOLOG 1;                                                           
COMPND   7 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: CD274, B7H1, PDCD1L1, PDCD1LG1, PDL1;                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PET21A                                    
KEYWDS    B7-H1, PD-L1, PROGRAMMED CELL DEATH 1, CELL MEMBRANE, GLYCOPROTEIN,   
KEYWDS   2 IMMUNOGLOBULIN DOMAIN, MEMBRANE, RECEPTOR, TRANSMEMBRANE, IMMUNE     
KEYWDS   3 SYSTEM                                                               
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Y.CHEN,F.GAO,P.LIU,F.CHU,J.QI,G.F.GAO                                 
REVDAT   2   19-JAN-11 3FN3    1       JRNL                                     
REVDAT   1   29-DEC-09 3FN3    0                                                
JRNL        AUTH   Y.CHEN,P.LIU,F.GAO,H.CHENG,J.QI,G.F.GAO                      
JRNL        TITL   A DIMERIC STRUCTURE OF PD-L1: FUNCTIONAL UNITS OR            
JRNL        TITL 2 EVOLUTIONARY RELICS?                                         
JRNL        REF    PROTEIN CELL                  V.   1   153 2010              
JRNL        REFN                   ISSN 1674-800X                               
JRNL        PMID   21203985                                                     
JRNL        DOI    10.1007/S13238-010-0022-1                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.70 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0019                                      
REMARK   3   AUTHORS     : MURSHUDOV,VAGIN,DODSON                               
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.70                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 15.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 97.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 12011                          
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) : 0.229                           
REMARK   3   R VALUE            (WORKING SET) : 0.226                           
REMARK   3   FREE R VALUE                     : 0.296                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 645                             
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) : 2.70                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.77                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 878                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 97.29                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3140                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 54                           
REMARK   3   BIN FREE R VALUE                    : 0.3350                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3428                                    
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) : 58.81                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 1.80000                                              
REMARK   3    B22 (A**2) : -4.59000                                             
REMARK   3    B33 (A**2) : 2.79000                                              
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.438         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.342         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 16.827        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.924                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.864                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3495 ; 0.015 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  4745 ; 1.734 ; 1.958       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   424 ; 7.416 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   166 ;39.277 ;24.819       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   632 ;21.309 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    20 ;17.326 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   550 ; 0.116 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  2600 ; 0.005 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  1496 ; 0.254 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  2271 ; 0.318 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   137 ; 0.197 ; 0.200       
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):    53 ; 0.256 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):     5 ; 0.352 ; 0.200       
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):  2189 ; 0.742 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  3478 ; 1.316 ; 2.000       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1480 ; 1.686 ; 3.000       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1267 ; 2.595 ; 4.500       
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  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : 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                                                           
REMARK   4                                                                      
REMARK   4 3FN3 COMPLIES WITH FORMAT V. 3.20, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 25-DEC-08.                  
REMARK 100 THE RCSB ID CODE IS RCSB050793.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 10-FEB-08                          
REMARK 200  TEMPERATURE           (KELVIN) : 298.0                              
REMARK 200  PH                             : 5.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 8                                  
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 MICROMAX-007 HF             
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NI MIRROR + NI FILTER              
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV++                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 19603                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 91.1                               
REMARK 200  DATA REDUNDANCY                : 5.700                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.70                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 98.1                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASES                                                
REMARK 200 STARTING MODEL: PDB ENTRY 3BIS                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 45.84                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.27                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 15% PEG 3350 (W/V), 0.2M AMMONIUM        
REMARK 280  ACETATE (NH4AC), 0.1M BIS-TRIS PH 5.5, VAPOR DIFFUSION, HANGING     
REMARK 280  DROP, TEMPERATURE 291K                                              
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       70.15800            
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       70.15800            
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       35.93250            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       45.68650            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       35.93250            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       45.68650            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       70.15800            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       35.93250            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       45.68650            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       70.15800            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       35.93250            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       45.68650            
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 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     HIS A   233                                                      
REMARK 465     PRO A   234                                                      
REMARK 465     PRO A   235                                                      
REMARK 465     ASN A   236                                                      
REMARK 465     GLU A   237                                                      
REMARK 465     ARG A   238                                                      
REMARK 465     LEU B   229                                                      
REMARK 465     PRO B   230                                                      
REMARK 465     LEU B   231                                                      
REMARK 465     ALA B   232                                                      
REMARK 465     HIS B   233                                                      
REMARK 465     PRO B   234                                                      
REMARK 465     PRO B   235                                                      
REMARK 465     ASN B   236                                                      
REMARK 465     GLU B   237                                                      
REMARK 465     ARG B   238                                                      
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    LEU B    74     N    VAL B    76              2.17            
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    PHE A  19      109.98     84.95                                   
REMARK 500    LYS A  46      -67.85     38.73                                   
REMARK 500    GLU A  60       57.48     28.44                                   
REMARK 500    ASP A  61       -8.76     66.85                                   
REMARK 500    HIS A  78      133.35    -38.87                                   
REMARK 500    SER A  80       -5.08    -59.84                                   
REMARK 500    ASP A 103       79.27     49.70                                   
REMARK 500    TYR A 134       59.12    -67.79                                   
REMARK 500    SER A 169     -170.88    -69.90                                   
REMARK 500    THR A 203      132.44    -34.58                                   
REMARK 500    ASN A 204      -13.72     80.61                                   
REMARK 500    PRO A 230      136.22    -37.69                                   
REMARK 500    LEU A 231      102.14     52.58                                   
REMARK 500    LYS B  46      -61.48     48.24                                   
REMARK 500    ASP B  49       68.89    -60.79                                   
REMARK 500    GLU B  60       79.24     13.22                                   
REMARK 500    ILE B  64      -65.37   -102.17                                   
REMARK 500    HIS B  69       84.09     37.40                                   
REMARK 500    LYS B  75      -48.31     -8.44                                   
REMARK 500    ARG B  82      -61.14    -25.86                                   
REMARK 500    ASP B 108        4.66    -53.03                                   
REMARK 500    TYR B 118      102.58   -171.21                                   
REMARK 500    TYR B 134       80.23    -69.22                                   
REMARK 500    ASP B 145       96.14   -165.36                                   
REMARK 500    PRO B 161     -161.14    -66.94                                   
REMARK 500    SER B 170       11.87    -54.08                                   
REMARK 500    ASP B 171        4.56   -151.37                                   
REMARK 500    THR B 201      149.22   -175.70                                   
REMARK 500    ASN B 204       20.70     49.75                                   
REMARK 500    ASP B 215       70.11     48.16                                   
REMARK 500    GLU B 217      108.98    -49.20                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CHIRAL CENTERS                                             
REMARK 500                                                                      
REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL                     
REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY                      
REMARK 500 FOR AMINO ACIDS AND C1'--O4'--N1(N9)--C2' FOR                        
REMARK 500 NUCLEIC ACIDS OR EQUIVALENT ANGLE                                    
REMARK 500 M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN                            
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE                   
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,6X,F5.1,6X,A1,10X,A1,3X,A16)       
REMARK 500                                                                      
REMARK 500  M RES CSSEQI    IMPROPER   EXPECTED   FOUND DETAILS                 
REMARK 500    LYS B  46        25.0      L          L   OUTSIDE RANGE           
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  3FN3 A   19   238  UNP    Q9NZQ7   PD1L1_HUMAN     19    238             
DBREF  3FN3 B   19   238  UNP    Q9NZQ7   PD1L1_HUMAN     19    238             
SEQADV 3FN3 MET A   18  UNP  Q9NZQ7              INITIATING METHIONINE          
SEQADV 3FN3 MET B   18  UNP  Q9NZQ7              INITIATING METHIONINE          
SEQRES   1 A  221  MET PHE THR VAL THR VAL PRO LYS ASP LEU TYR VAL VAL          
SEQRES   2 A  221  GLU TYR GLY SER ASN MET THR ILE GLU CYS LYS PHE PRO          
SEQRES   3 A  221  VAL GLU LYS GLN LEU ASP LEU ALA ALA LEU ILE VAL TYR          
SEQRES   4 A  221  TRP GLU MET GLU ASP LYS ASN ILE ILE GLN PHE VAL HIS          
SEQRES   5 A  221  GLY GLU GLU ASP LEU LYS VAL GLN HIS SER SER TYR ARG          
SEQRES   6 A  221  GLN ARG ALA ARG LEU LEU LYS ASP GLN LEU SER LEU GLY          
SEQRES   7 A  221  ASN ALA ALA LEU GLN ILE THR ASP VAL LYS LEU GLN ASP          
SEQRES   8 A  221  ALA GLY VAL TYR ARG CYS MET ILE SER TYR GLY GLY ALA          
SEQRES   9 A  221  ASP TYR LYS ARG ILE THR VAL LYS VAL ASN ALA PRO TYR          
SEQRES  10 A  221  ASN LYS ILE ASN GLN ARG ILE LEU VAL VAL ASP PRO VAL          
SEQRES  11 A  221  THR SER GLU HIS GLU LEU THR CYS GLN ALA GLU GLY TYR          
SEQRES  12 A  221  PRO LYS ALA GLU VAL ILE TRP THR SER SER ASP HIS GLN          
SEQRES  13 A  221  VAL LEU SER GLY LYS THR THR THR THR ASN SER LYS ARG          
SEQRES  14 A  221  GLU GLU LYS LEU PHE ASN VAL THR SER THR LEU ARG ILE          
SEQRES  15 A  221  ASN THR THR THR ASN GLU ILE PHE TYR CYS THR PHE ARG          
SEQRES  16 A  221  ARG LEU ASP PRO GLU GLU ASN HIS THR ALA GLU LEU VAL          
SEQRES  17 A  221  ILE PRO GLU LEU PRO LEU ALA HIS PRO PRO ASN GLU ARG          
SEQRES   1 B  221  MET PHE THR VAL THR VAL PRO LYS ASP LEU TYR VAL VAL          
SEQRES   2 B  221  GLU TYR GLY SER ASN MET THR ILE GLU CYS LYS PHE PRO          
SEQRES   3 B  221  VAL GLU LYS GLN LEU ASP LEU ALA ALA LEU ILE VAL TYR          
SEQRES   4 B  221  TRP GLU MET GLU ASP LYS ASN ILE ILE GLN PHE VAL HIS          
SEQRES   5 B  221  GLY GLU GLU ASP LEU LYS VAL GLN HIS SER SER TYR ARG          
SEQRES   6 B  221  GLN ARG ALA ARG LEU LEU LYS ASP GLN LEU SER LEU GLY          
SEQRES   7 B  221  ASN ALA ALA LEU GLN ILE THR ASP VAL LYS LEU GLN ASP          
SEQRES   8 B  221  ALA GLY VAL TYR ARG CYS MET ILE SER TYR GLY GLY ALA          
SEQRES   9 B  221  ASP TYR LYS ARG ILE THR VAL LYS VAL ASN ALA PRO TYR          
SEQRES  10 B  221  ASN LYS ILE ASN GLN ARG ILE LEU VAL VAL ASP PRO VAL          
SEQRES  11 B  221  THR SER GLU HIS GLU LEU THR CYS GLN ALA GLU GLY TYR          
SEQRES  12 B  221  PRO LYS ALA GLU VAL ILE TRP THR SER SER ASP HIS GLN          
SEQRES  13 B  221  VAL LEU SER GLY LYS THR THR THR THR ASN SER LYS ARG          
SEQRES  14 B  221  GLU GLU LYS LEU PHE ASN VAL THR SER THR LEU ARG ILE          
SEQRES  15 B  221  ASN THR THR THR ASN GLU ILE PHE TYR CYS THR PHE ARG          
SEQRES  16 B  221  ARG LEU ASP PRO GLU GLU ASN HIS THR ALA GLU LEU VAL          
SEQRES  17 B  221  ILE PRO GLU LEU PRO LEU ALA HIS PRO PRO ASN GLU ARG          
HELIX    1   1 ASP A   49  ALA A   52  5                                   4    
HELIX    2   2 LEU A   74  GLN A   77  5                                   4    
HELIX    3   3 HIS A   78  ARG A   82  5                                   5    
HELIX    4   4 ASP A   90  LEU A   94  5                                   5    
HELIX    5   5 LEU B   74  GLN B   77  5                                   4    
HELIX    6   6 LEU B   88  SER B   93  1                                   6    
SHEET    1   A 6 LEU A  27  GLU A  31  0                                        
SHEET    2   A 6 ALA A 121  ASN A 131  1  O  ASN A 131   N  VAL A  30           
SHEET    3   A 6 GLY A 110  SER A 117 -1  N  TYR A 112   O  ILE A 126           
SHEET    4   A 6 ILE A  54  MET A  59 -1  N  GLU A  58   O  ARG A 113           
SHEET    5   A 6 LYS A  62  VAL A  68 -1  O  PHE A  67   N  VAL A  55           
SHEET    6   A 6 GLU A  71  GLU A  72 -1  O  GLU A  71   N  VAL A  68           
SHEET    1   B 3 MET A  36  LYS A  41  0                                        
SHEET    2   B 3 ASN A  96  ILE A 101 -1  O  ALA A  97   N  CYS A  40           
SHEET    3   B 3 ALA A  85  LEU A  87 -1  N  ARG A  86   O  GLN A 100           
SHEET    1   C 8 LYS A 178  ASN A 183  0                                        
SHEET    2   C 8 PHE A 191  ASN A 200 -1  O  ASN A 192   N  THR A 182           
SHEET    3   C 8 GLU A 150  GLY A 159 -1  N  HIS A 151   O  ILE A 199           
SHEET    4   C 8 ASN A 138  ASP A 145 -1  N  ARG A 140   O  THR A 154           
SHEET    5   C 8 ILE B 137  ASP B 145  1  O  GLN B 139   N  VAL A 143           
SHEET    6   C 8 GLU B 150  GLY B 159 -1  O  GLU B 152   N  LEU B 142           
SHEET    7   C 8 PHE B 191  ASN B 200 -1  O  LEU B 197   N  LEU B 153           
SHEET    8   C 8 LYS B 178  ASN B 183 -1  N  THR B 180   O  THR B 194           
SHEET    1   D 4 VAL A 174  LEU A 175  0                                        
SHEET    2   D 4 GLU A 164  THR A 168 -1  N  TRP A 167   O  LEU A 175           
SHEET    3   D 4 ILE A 206  ARG A 213 -1  O  THR A 210   N  ILE A 166           
SHEET    4   D 4 GLU A 218  VAL A 225 -1  O  HIS A 220   N  PHE A 211           
SHEET    1   E 6 LEU B  27  GLU B  31  0                                        
SHEET    2   E 6 ALA B 121  ASN B 131  1  O  LYS B 129   N  TYR B  28           
SHEET    3   E 6 GLY B 110  SER B 117 -1  N  TYR B 112   O  ILE B 126           
SHEET    4   E 6 ILE B  54  MET B  59 -1  N  TYR B  56   O  MET B 115           
SHEET    5   E 6 LYS B  62  VAL B  68 -1  O  ILE B  65   N  TRP B  57           
SHEET    6   E 6 GLU B  71  GLU B  72 -1  O  GLU B  71   N  VAL B  68           
SHEET    1   F 3 MET B  36  LYS B  41  0                                        
SHEET    2   F 3 ASN B  96  ILE B 101 -1  O  ALA B  97   N  CYS B  40           
SHEET    3   F 3 ALA B  85  LEU B  87 -1  N  ARG B  86   O  GLN B 100           
SHEET    1   G 3 GLU B 164  SER B 169  0                                        
SHEET    2   G 3 ILE B 206  ARG B 213 -1  O  THR B 210   N  ILE B 166           
SHEET    3   G 3 GLU B 218  VAL B 225 -1  O  HIS B 220   N  PHE B 211           
SSBOND   1 CYS A   40    CYS A  114                          1555   1555  2.03  
SSBOND   2 CYS A  155    CYS A  209                          1555   1555  2.02  
SSBOND   3 CYS B   40    CYS B  114                          1555   1555  2.04  
SSBOND   4 CYS B  155    CYS B  209                          1555   1555  2.04  
CISPEP   1 TYR A  160    PRO A  161          0        -5.06                     
CISPEP   2 ASP A  215    PRO A  216          0        -0.03                     
CISPEP   3 TYR B  160    PRO B  161          0       -10.11                     
CISPEP   4 ASP B  215    PRO B  216          0       -11.88                     
CRYST1   71.865   91.373  140.316  90.00  90.00  90.00 C 2 2 21     16          
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      0.013915  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010944  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007127        0.00000