HEADER    SIGNALLING PROTEIN                      03-JUL-96   1EXT              
TITLE     EXTRACELLULAR DOMAIN OF THE 55KDA TUMOR NECROSIS FACTOR RECEPTOR.     
TITLE    2 CRYSTALLIZED AT PH3.7 IN P 21 21 21.                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TUMOR NECROSIS FACTOR RECEPTOR;                            
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: EXTRACELLULAR DOMAIN;                                      
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 OTHER_DETAILS: THE CONSTRUCT CONTAINS RESIDUES 12 TO 172 OF THE      
SOURCE   8 MATURE SEQUENCE OF THE ENTIRE RECEPTOR. RESIDUE 11 IS MUTATED TO MET 
SOURCE   9 AS A RESULT OF THE EXPRESSION SYSTEM                                 
KEYWDS    BINDING PROTEIN, CYTOKINE, SIGNALLING PROTEIN                         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.H.NAISMITH,S.R.SPRANG                                               
REVDAT   5   13-NOV-24 1EXT    1       REMARK                                   
REVDAT   4   09-AUG-23 1EXT    1       REMARK LINK                              
REVDAT   3   24-FEB-09 1EXT    1       VERSN                                    
REVDAT   2   30-SEP-03 1EXT    1       DBREF                                    
REVDAT   1   11-JAN-97 1EXT    0                                                
JRNL        AUTH   J.H.NAISMITH,T.Q.DEVINE,T.KOHNO,S.R.SPRANG                   
JRNL        TITL   STRUCTURES OF THE EXTRACELLULAR DOMAIN OF THE TYPE I TUMOR   
JRNL        TITL 2 NECROSIS FACTOR RECEPTOR.                                    
JRNL        REF    STRUCTURE                     V.   4  1251 1996              
JRNL        REFN                   ISSN 0969-2126                               
JRNL        PMID   8939750                                                      
JRNL        DOI    10.1016/S0969-2126(96)00134-7                                
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   J.H.NAISMITH,T.Q.DEVINE,B.J.BRANDHUBER,S.R.SPRANG            
REMARK   1  TITL   CRYSTALLOGRAPHIC EVIDENCE FOR DIMERIZATION OF UNLIGANDED     
REMARK   1  TITL 2 TUMOR NECROSIS FACTOR RECEPTOR                               
REMARK   1  REF    J.BIOL.CHEM.                  V. 270 13303 1995              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   L.E.RODSETH,B.BRANDHUBER,T.Q.DEVINE,M.J.ECK,K.HALE,          
REMARK   1  AUTH 2 J.H.NAISMITH,S.R.SPRANG                                      
REMARK   1  TITL   TWO CRYSTAL FORMS OF THE EXTRACELLULAR DOMAIN OF TYPE I      
REMARK   1  TITL 2 TUMOR NECROSIS FACTOR RECEPTOR                               
REMARK   1  REF    J.MOL.BIOL.                   V. 239   332 1994              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   D.W.BANNER,A.D'ARCY,W.JANES,R.GENTZ,H.J.SCHOENFELD,C.BROGER, 
REMARK   1  AUTH 2 H.LOETSCHER,W.LESSLAUER                                      
REMARK   1  TITL   CRYSTAL STRUCTURE OF THE SOLUBLE HUMAN 55 KD TNF             
REMARK   1  TITL 2 RECEPTOR-HUMAN TNF BETA COMPLEX: IMPLICATIONS FOR TNF        
REMARK   1  TITL 3 RECEPTOR ACTIVATION                                          
REMARK   1  REF    CELL(CAMBRIDGE,MASS.)         V.  73   431 1993              
REMARK   1  REFN                   ISSN 0092-8674                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.85 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.1                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.85                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 36977                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : FREE R                          
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.203                           
REMARK   3   FREE R VALUE                     : 0.243                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 3685                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2471                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 16                                      
REMARK   3   SOLVENT ATOMS            : 400                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 19.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.009                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.683                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 25.29                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.519                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  ATOMS WITH ZERO OCCUPANCY ARE STEREOCHEMICALLY MODELED              
REMARK   3  (68 OUT OF 2162) AND WERE NOT LOCATED IN EXPERIMENTAL               
REMARK   3  MAPS.                                                               
REMARK   4                                                                      
REMARK   4 1EXT COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000173189.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-MAR-94                          
REMARK 200  TEMPERATURE           (KELVIN) : 123                                
REMARK 200  PH                             : 3.7                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SRS                                
REMARK 200  BEAMLINE                       : PX9.5                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.992                              
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                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 36977                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.0                               
REMARK 200  DATA REDUNDANCY                : 6.000                              
REMARK 200  R MERGE                    (I) : 0.05100                            
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) : 1.85                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.93                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 77.0                               
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: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: X-PLOR 3.1                                            
REMARK 200 STARTING MODEL: 1NCF                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 58.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.03                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALLIZED AT PH3.7 IN P 21 21 21.     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   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       39.40500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       33.95000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       41.53000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       33.95000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       39.40500            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       41.53000            
REMARK 290   SMTRY3   4  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: 3300 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 20190 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -51.0 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     MET A    11                                                      
REMARK 465     ASP A    12                                                      
REMARK 465     GLN B   169                                                      
REMARK 465     ILE B   170                                                      
REMARK 465     GLU B   171                                                      
REMARK 465     ASN B   172                                                      
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     LYS B   75   CD   CE   NZ                                        
REMARK 480     LYS B   78   CD   CE   NZ                                        
REMARK 480     LYS B  100   CD   CE   NZ                                        
REMARK 480     LYS B  157   CD   CE   NZ                                        
REMARK 480     LYS B  158   CD   CE   NZ                                        
REMARK 480     LYS B  164   CD   CE   NZ                                        
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    HIS A  66       43.52   -150.71                                   
REMARK 500    ASN B  26        1.94    -68.38                                   
REMARK 500    HIS B  66       43.19   -156.77                                   
REMARK 500    SER B 159        3.13     84.12                                   
REMARK 500    CYS B 162       -7.04   -155.79                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 404  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 147   OE1                                                    
REMARK 620 2 HOH A 473   O    92.3                                              
REMARK 620 3 HOH A 497   O    88.6  91.7                                        
REMARK 620 4 HOH B 219   O    96.3  90.3 174.7                                  
REMARK 620 5 HOH B 257   O   164.9 101.3  97.4  77.3                            
REMARK 620 6 HOH B 275   O    85.3 177.6  87.8  90.4  81.2                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 401                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 402                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 403                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 404                  
DBREF  1EXT A   12   172  UNP    P19438   TNR1A_HUMAN     41    201             
DBREF  1EXT B   12   172  UNP    P19438   TNR1A_HUMAN     41    201             
SEQRES   1 A  162  MET ASP SER VAL CYS PRO GLN GLY LYS TYR ILE HIS PRO          
SEQRES   2 A  162  GLN ASN ASN SER ILE CYS CYS THR LYS CYS HIS LYS GLY          
SEQRES   3 A  162  THR TYR LEU TYR ASN ASP CYS PRO GLY PRO GLY GLN ASP          
SEQRES   4 A  162  THR ASP CYS ARG GLU CYS GLU SER GLY SER PHE THR ALA          
SEQRES   5 A  162  SER GLU ASN HIS LEU ARG HIS CYS LEU SER CYS SER LYS          
SEQRES   6 A  162  CYS ARG LYS GLU MET GLY GLN VAL GLU ILE SER SER CYS          
SEQRES   7 A  162  THR VAL ASP ARG ASP THR VAL CYS GLY CYS ARG LYS ASN          
SEQRES   8 A  162  GLN TYR ARG HIS TYR TRP SER GLU ASN LEU PHE GLN CYS          
SEQRES   9 A  162  PHE ASN CYS SER LEU CYS LEU ASN GLY THR VAL HIS LEU          
SEQRES  10 A  162  SER CYS GLN GLU LYS GLN ASN THR VAL CYS THR CYS HIS          
SEQRES  11 A  162  ALA GLY PHE PHE LEU ARG GLU ASN GLU CYS VAL SER CYS          
SEQRES  12 A  162  SER ASN CYS LYS LYS SER LEU GLU CYS THR LYS LEU CYS          
SEQRES  13 A  162  LEU PRO GLN ILE GLU ASN                                      
SEQRES   1 B  162  MET ASP SER VAL CYS PRO GLN GLY LYS TYR ILE HIS PRO          
SEQRES   2 B  162  GLN ASN ASN SER ILE CYS CYS THR LYS CYS HIS LYS GLY          
SEQRES   3 B  162  THR TYR LEU TYR ASN ASP CYS PRO GLY PRO GLY GLN ASP          
SEQRES   4 B  162  THR ASP CYS ARG GLU CYS GLU SER GLY SER PHE THR ALA          
SEQRES   5 B  162  SER GLU ASN HIS LEU ARG HIS CYS LEU SER CYS SER LYS          
SEQRES   6 B  162  CYS ARG LYS GLU MET GLY GLN VAL GLU ILE SER SER CYS          
SEQRES   7 B  162  THR VAL ASP ARG ASP THR VAL CYS GLY CYS ARG LYS ASN          
SEQRES   8 B  162  GLN TYR ARG HIS TYR TRP SER GLU ASN LEU PHE GLN CYS          
SEQRES   9 B  162  PHE ASN CYS SER LEU CYS LEU ASN GLY THR VAL HIS LEU          
SEQRES  10 B  162  SER CYS GLN GLU LYS GLN ASN THR VAL CYS THR CYS HIS          
SEQRES  11 B  162  ALA GLY PHE PHE LEU ARG GLU ASN GLU CYS VAL SER CYS          
SEQRES  12 B  162  SER ASN CYS LYS LYS SER LEU GLU CYS THR LYS LEU CYS          
SEQRES  13 B  162  LEU PRO GLN ILE GLU ASN                                      
HET    SO4  A 401       5                                                       
HET    SO4  A 402       5                                                       
HET    SO4  A 403       5                                                       
HET     MG  A 404       1                                                       
HETNAM     SO4 SULFATE ION                                                      
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   3  SO4    3(O4 S 2-)                                                   
FORMUL   6   MG    MG 2+                                                        
FORMUL   7  HOH   *400(H2 O)                                                    
HELIX    1   1 LYS A   78  MET A   80  5                                   3    
HELIX    2   2 CYS A  153  ASN A  155  5                                   3    
HELIX    3   3 THR A  163  CYS A  166  1                                   4    
HELIX    4   4 LYS B   78  MET B   80  5                                   3    
HELIX    5   5 CYS B  153  ASN B  155  5                                   3    
SHEET    1   A 2 LYS A  19  ILE A  21  0                                        
SHEET    2   A 2 CYS A  29  THR A  31 -1  N  CYS A  30   O  TYR A  20           
SHEET    1   B 2 PHE A 143  ARG A 146  0                                        
SHEET    2   B 2 GLU A 149  SER A 152 -1  N  VAL A 151   O  PHE A 144           
SHEET    1   C 2 LYS B  19  ILE B  21  0                                        
SHEET    2   C 2 CYS B  29  THR B  31 -1  N  CYS B  30   O  TYR B  20           
SHEET    1   D 2 PHE B 143  ARG B 146  0                                        
SHEET    2   D 2 GLU B 149  SER B 152 -1  N  VAL B 151   O  PHE B 144           
SHEET    1   E 2 THR A  37  ASN A  41  0                                        
SHEET    2   E 2 ASP A  51  GLU A  54 -1  N  ARG A  53   O  TYR A  38           
SHEET    1   F 2 VAL A  83  SER A  86  0                                        
SHEET    2   F 2 VAL A  95  GLY A  97 -1  N  GLY A  97   O  VAL A  83           
SHEET    1   G 2 GLN A 102  SER A 108  0                                        
SHEET    2   G 2 LEU A 111  ASN A 116 -1  N  PHE A 115   O  TYR A 103           
SHEET    1   H 2 GLY A 123  LEU A 127  0                                        
SHEET    2   H 2 VAL A 136  CYS A 139 -1  N  THR A 138   O  THR A 124           
SHEET    1   I 2 THR B  37  ASN B  41  0                                        
SHEET    2   I 2 ASP B  51  GLU B  54 -1  N  ARG B  53   O  TYR B  38           
SHEET    1   J 2 VAL B  83  SER B  86  0                                        
SHEET    2   J 2 VAL B  95  GLY B  97 -1  N  GLY B  97   O  VAL B  83           
SHEET    1   K 2 GLN B 102  SER B 108  0                                        
SHEET    2   K 2 LEU B 111  ASN B 116 -1  N  PHE B 115   O  TYR B 103           
SHEET    1   L 2 GLY B 123  LEU B 127  0                                        
SHEET    2   L 2 VAL B 136  CYS B 139 -1  N  THR B 138   O  THR B 124           
SSBOND   1 CYS A   15    CYS A   29                          1555   1555  2.03  
SSBOND   2 CYS A   30    CYS A   43                          1555   1555  2.04  
SSBOND   3 CYS A   33    CYS A   52                          1555   1555  2.03  
SSBOND   4 CYS A   55    CYS A   70                          1555   1555  2.03  
SSBOND   5 CYS A   73    CYS A   88                          1555   1555  2.02  
SSBOND   6 CYS A   76    CYS A   96                          1555   1555  2.03  
SSBOND   7 CYS A   98    CYS A  114                          1555   1555  2.03  
SSBOND   8 CYS A  117    CYS A  129                          1555   1555  2.03  
SSBOND   9 CYS A  120    CYS A  137                          1555   1555  2.03  
SSBOND  10 CYS A  139    CYS A  150                          1555   1555  2.03  
SSBOND  11 CYS A  153    CYS A  166                          1555   1555  2.03  
SSBOND  12 CYS A  156    CYS A  162                          1555   1555  2.03  
SSBOND  13 CYS B   15    CYS B   29                          1555   1555  2.21  
SSBOND  14 CYS B   30    CYS B   43                          1555   1555  2.23  
SSBOND  15 CYS B   33    CYS B   52                          1555   1555  2.27  
SSBOND  16 CYS B   55    CYS B   70                          1555   1555  2.26  
SSBOND  17 CYS B   73    CYS B   88                          1555   1555  2.25  
SSBOND  18 CYS B   76    CYS B   96                          1555   1555  2.30  
SSBOND  19 CYS B   98    CYS B  114                          1555   1555  2.23  
SSBOND  20 CYS B  117    CYS B  129                          1555   1555  2.23  
SSBOND  21 CYS B  120    CYS B  137                          1555   1555  2.27  
SSBOND  22 CYS B  139    CYS B  150                          1555   1555  2.21  
SSBOND  23 CYS B  153    CYS B  166                          1555   1555  2.35  
SSBOND  24 CYS B  156    CYS B  162                          1555   1555  2.35  
LINK         OE1 GLU A 147                MG    MG A 404     1555   1555  2.19  
LINK        MG    MG A 404                 O   HOH A 473     1555   1555  2.61  
LINK        MG    MG A 404                 O   HOH A 497     1555   1555  2.17  
LINK        MG    MG A 404                 O   HOH B 219     1555   1555  2.33  
LINK        MG    MG A 404                 O   HOH B 257     1555   1555  2.34  
LINK        MG    MG A 404                 O   HOH B 275     1555   1555  2.39  
SITE     1 AC1  4 PRO A  23  ARG A  68  ARG A  99  HOH A 421                    
SITE     1 AC2  5 ARG A  68  ARG A  99  LYS A 100  HOH A 480                    
SITE     2 AC2  5 HOH B 325                                                     
SITE     1 AC3  6 TYR A 103  GLN A 133  ASN A 134  HOH A 450                    
SITE     2 AC3  6 HOH A 466  HOH A 476                                          
SITE     1 AC4  6 GLU A 147  HOH A 473  HOH A 497  HOH B 219                    
SITE     2 AC4  6 HOH B 257  HOH B 275                                          
CRYST1   78.810   83.060   67.900  90.00  90.00  90.00 P 21 21 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      0.012689  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.012039  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014728        0.00000