PDB Short entry for 2A1I
HEADER    DNA BINDING PROTEIN                     20-JUN-05   2A1I              
TITLE     CRYSTAL STRUCTURE OF THE CENTRAL DOMAIN OF HUMAN ERCC1                
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: DNA EXCISION REPAIR PROTEIN ERCC-1;                        
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: CENTRAL 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 GENE: ERCC1;                                                         
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3/RIL);                            
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET-DUET1                                 
KEYWDS    ERCC1, XPF, NER, CENTRAL DOMAIN, DNA REPAIR, ENDONUCLEASE,            
KEYWDS   2 DNA BINDING PROTEIN                                                  
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    O.V.TSODIKOV,J.H.ENZLIN,O.D.SCHARER,T.ELLENBERGER                     
REVDAT   2   24-FEB-09 2A1I    1       VERSN                                    
REVDAT   1   02-AUG-05 2A1I    0                                                
JRNL        AUTH   O.V.TSODIKOV,J.H.ENZLIN,O.D.SCHARER,T.ELLENBERGER            
JRNL        TITL   CRYSTAL STRUCTURE AND DNA BINDING FUNCTIONS OF               
JRNL        TITL 2 ERCC1, A SUBUNIT OF THE DNA STRUCTURE-SPECIFIC               
JRNL        TITL 3 ENDONUCLEASE XPF-ERCC1.                                      
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V. 102 11236 2005              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   16076955                                                     
JRNL        DOI    10.1073/PNAS.0504341102                                      
REMARK   1                                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.90 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.1.24                                        
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) : 1.90                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 3.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 11309                          
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) : 0.206                           
REMARK   3   R VALUE            (WORKING SET) : 0.204                           
REMARK   3   FREE R VALUE                     : 0.248                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 586                             
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) : 1.90                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.95                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 786                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2780                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 50                           
REMARK   3   BIN FREE R VALUE                    : 0.3520                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1039                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 1                                       
REMARK   3   SOLVENT ATOMS            : 130                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 33.18                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 3.42000                                              
REMARK   3    B22 (A**2) : -1.94000                                             
REMARK   3    B33 (A**2) : -1.48000                                             
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): 0.166         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.154         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.130         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 4.539         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.957                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.933                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1062 ; 0.018 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  1442 ; 1.701 ; 1.976       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   128 ; 6.298 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   162 ; 0.163 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):   797 ; 0.007 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   510 ; 0.258 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   101 ; 0.237 ; 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 ; 0.213 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    19 ; 0.189 ; 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):   645 ; 0.887 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1044 ; 1.655 ; 2.000       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   417 ; 2.583 ; 3.000       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   398 ; 3.969 ; 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  : 1                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A    99        A   128                          
REMARK   3    ORIGIN FOR THE GROUP (A):  23.9350  33.1600  21.8360              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0213 T22:   0.0377                                     
REMARK   3      T33:   0.0721 T12:   0.0094                                     
REMARK   3      T13:   0.0007 T23:  -0.0213                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   2.5001 L22:   5.5136                                     
REMARK   3      L33:   5.2344 L12:   0.2247                                     
REMARK   3      L13:   0.7726 L23:   0.7488                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0475 S12:   0.0437 S13:   0.0020                       
REMARK   3      S21:  -0.3559 S22:  -0.0847 S23:  -0.2477                       
REMARK   3      S31:  -0.1053 S32:   0.2624 S33:   0.1322                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2A1I COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 23-JUN-05.                  
REMARK 100 THE RCSB ID CODE IS RCSB033374.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 20-NOV-04                          
REMARK 200  TEMPERATURE           (KELVIN) : 116                                
REMARK 200  PH                             : 6.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 19-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.00636                            
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 11932                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.900                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 3.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY                : NULL                               
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) : 1.90                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.97                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.7                               
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: SIRAS                        
REMARK 200 SOFTWARE USED: SOLVE                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 47.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.30                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: MES, PEG 5000 MME, GLYCEROL, PH          
REMARK 280  6.5, VAPOR DIFFUSION, SITTING DROP,TEMPERATURE 295K                 
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       20.03500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       36.10800            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       25.14550            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       36.10800            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       20.03500            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       25.14550            
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: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
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    82                                                      
REMARK 465     GLY A    83                                                      
REMARK 465     SER A    84                                                      
REMARK 465     SER A    85                                                      
REMARK 465     HIS A    86                                                      
REMARK 465     HIS A    87                                                      
REMARK 465     HIS A    88                                                      
REMARK 465     HIS A    89                                                      
REMARK 465     HIS A    90                                                      
REMARK 465     HIS A    91                                                      
REMARK 465     SER A    92                                                      
REMARK 465     GLN A    93                                                      
REMARK 465     ASP A    94                                                      
REMARK 465     PRO A    95                                                      
REMARK 465     ALA A    96                                                      
REMARK 465     LYS A    97                                                      
REMARK 465     SER A    98                                                      
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    LYS A   218     O    HOH A   351              2.13            
REMARK 500   OE2  GLU A   204     O    HOH A   330              2.14            
REMARK 500   O    ALA A   220     O    HOH A   233              2.17            
REMARK 500   N    ASN A    99     O    HOH A   348              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    TYR A 215   CG    TYR A 215   CD1     0.088                       
REMARK 500    TYR A 215   CZ    TYR A 215   CE2     0.085                       
REMARK 500    ALA A 220   C     ALA A 220   O       0.180                       
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                              HG A   1  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 137   O                                                      
REMARK 620 2 CYS A 137   SG   68.6                                              
REMARK 620 N                    1                                               
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 1                    
DBREF  2A1I A   96   227  UNP    P07992   ERCC1_HUMAN     96    227             
SEQADV 2A1I MET A   82  UNP  P07992              CLONING ARTIFACT               
SEQADV 2A1I GLY A   83  UNP  P07992              CLONING ARTIFACT               
SEQADV 2A1I SER A   84  UNP  P07992              CLONING ARTIFACT               
SEQADV 2A1I SER A   85  UNP  P07992              CLONING ARTIFACT               
SEQADV 2A1I HIS A   86  UNP  P07992              EXPRESSION TAG                 
SEQADV 2A1I HIS A   87  UNP  P07992              EXPRESSION TAG                 
SEQADV 2A1I HIS A   88  UNP  P07992              EXPRESSION TAG                 
SEQADV 2A1I HIS A   89  UNP  P07992              EXPRESSION TAG                 
SEQADV 2A1I HIS A   90  UNP  P07992              EXPRESSION TAG                 
SEQADV 2A1I HIS A   91  UNP  P07992              EXPRESSION TAG                 
SEQADV 2A1I SER A   92  UNP  P07992              CLONING ARTIFACT               
SEQADV 2A1I GLN A   93  UNP  P07992              CLONING ARTIFACT               
SEQADV 2A1I ASP A   94  UNP  P07992              CLONING ARTIFACT               
SEQADV 2A1I PRO A   95  UNP  P07992              CLONING ARTIFACT               
SEQRES   1 A  146  MET GLY SER SER HIS HIS HIS HIS HIS HIS SER GLN ASP          
SEQRES   2 A  146  PRO ALA LYS SER ASN SER ILE ILE VAL SER PRO ARG GLN          
SEQRES   3 A  146  ARG GLY ASN PRO VAL LEU LYS PHE VAL ARG ASN VAL PRO          
SEQRES   4 A  146  TRP GLU PHE GLY ASP VAL ILE PRO ASP TYR VAL LEU GLY          
SEQRES   5 A  146  GLN SER THR CYS ALA LEU PHE LEU SER LEU ARG TYR HIS          
SEQRES   6 A  146  ASN LEU HIS PRO ASP TYR ILE HIS GLY ARG LEU GLN SER          
SEQRES   7 A  146  LEU GLY LYS ASN PHE ALA LEU ARG VAL LEU LEU VAL GLN          
SEQRES   8 A  146  VAL ASP VAL LYS ASP PRO GLN GLN ALA LEU LYS GLU LEU          
SEQRES   9 A  146  ALA LYS MET CYS ILE LEU ALA ASP CYS THR LEU ILE LEU          
SEQRES  10 A  146  ALA TRP SER PRO GLU GLU ALA GLY ARG TYR LEU GLU THR          
SEQRES  11 A  146  TYR LYS ALA TYR GLU GLN LYS PRO ALA ASP LEU LEU MET          
SEQRES  12 A  146  GLU LYS LEU                                                  
HET     HG  A   1       1                                                       
HETNAM      HG MERCURY (II) ION                                                 
FORMUL   2   HG    HG 2+                                                        
FORMUL   3  HOH   *130(H2 O)                                                    
HELIX    1   1 PRO A  105  ARG A  108  5                                   4    
HELIX    2   2 ASN A  110  VAL A  116  5                                   7    
HELIX    3   3 LEU A  143  HIS A  149  1                                   7    
HELIX    4   4 ASP A  151  GLY A  161  1                                  11    
HELIX    5   5 PRO A  178  ASP A  193  1                                  16    
HELIX    6   6 SER A  201  ALA A  214  1                                  14    
HELIX    7   7 ASP A  221  LEU A  227  1                                   7    
SHEET    1   A 6 TRP A 121  PHE A 123  0                                        
SHEET    2   A 6 ILE A 101  VAL A 103  1  N  VAL A 103   O  GLU A 122           
SHEET    3   A 6 TYR A 130  GLY A 133 -1  O  VAL A 131   N  ILE A 102           
SHEET    4   A 6 THR A 136  SER A 142 -1  O  THR A 136   N  LEU A 132           
SHEET    5   A 6 LEU A 166  GLN A 172  1  O  LEU A 170   N  LEU A 139           
SHEET    6   A 6 THR A 195  ALA A 199  1  O  THR A 195   N  LEU A 169           
LINK        HG    HG A   1                 O   CYS A 137     1555   1555  3.21  
LINK        HG    HG A   1                 SG  CYS A 137     1555   1555  2.66  
SITE     1 AC1  3 CYS A 137  LEU A 160  ARG A 167                               
CRYST1   40.070   50.291   72.216  90.00  90.00  90.00 P 21 21 21    4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.024956  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.019884  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013847        0.00000