PDB Short entry for 2O3B
HEADER    HYDROLASE/HYDROLASE INHIBITOR           01-DEC-06   2O3B              
TITLE     CRYSTAL STRUCTURE COMPLEX OF NUCLEASE A (NUCA) WITH INTRA-CELLULAR    
TITLE    2 INHIBITOR NUIA                                                       
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: NUCLEASE;                                                  
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: ENDONUCLEASE;                                               
COMPND   5 EC: 3.1.30.-;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES;                                                       
COMPND   8 MOL_ID: 2;                                                           
COMPND   9 MOLECULE: SUGAR-NON-SPECIFIC NUCLEASE INHIBITOR;                     
COMPND  10 CHAIN: B;                                                            
COMPND  11 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: NOSTOC SP.;                                     
SOURCE   3 ORGANISM_TAXID: 103690;                                              
SOURCE   4 STRAIN: PCC 7120;                                                    
SOURCE   5 GENE: NUCA;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3)STAR;                             
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET15B;                                   
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 ORGANISM_SCIENTIFIC: NOSTOC SP.;                                     
SOURCE  13 ORGANISM_TAXID: 103690;                                              
SOURCE  14 STRAIN: PCC 7120;                                                    
SOURCE  15 GENE: NUIA;                                                          
SOURCE  16 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  17 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  18 EXPRESSION_SYSTEM_STRAIN: BL21(DE3)STAR;                             
SOURCE  19 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  20 EXPRESSION_SYSTEM_PLASMID: PET15B                                    
KEYWDS    NUCLEASE, NUCLEASE INHIBITOR, METAL COMPLEX, NON-SPECIFIC NUCLEASE,   
KEYWDS   2 HYDROLASE-HYDROLASE INHIBITOR COMPLEX                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.GHOSH,G.MEISS,A.M.PINGOUD,R.E.LONDON,L.C.PEDERSEN                   
REVDAT   5   20-OCT-21 2O3B    1       REMARK SEQADV LINK                       
REVDAT   4   13-JUL-11 2O3B    1       VERSN                                    
REVDAT   3   24-FEB-09 2O3B    1       VERSN                                    
REVDAT   2   17-APR-07 2O3B    1       JRNL                                     
REVDAT   1   19-DEC-06 2O3B    0                                                
JRNL        AUTH   M.GHOSH,G.MEISS,A.M.PINGOUD,R.E.LONDON,L.C.PEDERSEN          
JRNL        TITL   THE NUCLEASE A-INHIBITOR COMPLEX IS CHARACTERIZED BY A NOVEL 
JRNL        TITL 2 METAL ION BRIDGE.                                            
JRNL        REF    J.BIOL.CHEM.                  V. 282  5682 2007              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   17138564                                                     
JRNL        DOI    10.1074/JBC.M605986200                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.30 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 43.61                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 250901.600                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 95.7                           
REMARK   3   NUMBER OF REFLECTIONS             : 23512                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.201                           
REMARK   3   FREE R VALUE                     : 0.241                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.800                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1126                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.007                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.30                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.44                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 87.00                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 3309                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2840                       
REMARK   3   BIN FREE R VALUE                    : 0.3280                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 4.70                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 165                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.026                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2912                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 27                                      
REMARK   3   SOLVENT ATOMS            : 227                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 37.30                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 46.90                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 4.04000                                              
REMARK   3    B22 (A**2) : 4.04000                                              
REMARK   3    B33 (A**2) : -8.08000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.27                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.27                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.33                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.33                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.008                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 24.00                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.820                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 1.390 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.270 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.110 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.060 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.30                                                 
REMARK   3   BSOL        : 30.77                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  3  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  4  : MES.PAR                                        
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  3   : WATER_REP.TOP                                  
REMARK   3  TOPOLOGY FILE  4   : MES.TOP                                        
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2O3B COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-DEC-06.                  
REMARK 100 THE DEPOSITION ID IS D_1000040633.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 26-OCT-05                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 5.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 22-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.00                               
REMARK 200  MONOCHROMATOR                  : MIRRORS                            
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARMOSAIC 300 MM CCD               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 24637                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.300                              
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                : 13.10                              
REMARK 200  R MERGE                    (I) : 0.10600                            
REMARK 200  R SYM                      (I) : 0.10600                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 6.7000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.30                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.38                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 97.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 8.30                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.60400                            
REMARK 200  R SYM FOR SHELL            (I) : 0.60400                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: PDB ENTRY 1JM8                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 61.35                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.18                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 100MM MES, 17-21% PEG6000, PH 5.5,       
REMARK 280  VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 277K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2                        
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   -Y+1/2,X+1/2,Z+3/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+1/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+3/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+1/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z+1/2                                            
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       69.48850            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       43.61250            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       43.61250            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000      104.23275            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       43.61250            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       43.61250            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       34.74425            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       43.61250            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       43.61250            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000      104.23275            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       43.61250            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       43.61250            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       34.74425            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       69.48850            
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     GLY B     0                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     SER B   1    OG                                                  
REMARK 470     GLN B  48    CG   CD   OE1  NE2                                  
REMARK 470     GLN B  54    CG   CD   OE1  NE2                                  
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    ASN B 101   C     PRO B 102   N       0.212                       
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    PRO A  50       43.12    -74.69                                   
REMARK 500    THR A  54       68.19   -116.21                                   
REMARK 500    ASN A  57       53.10   -151.93                                   
REMARK 500    ASN A  96       70.13   -102.14                                   
REMARK 500    ILE A 125      -60.11    -97.82                                   
REMARK 500    ASN A 157      -94.75   -106.86                                   
REMARK 500    ASN A 157      -94.75   -106.69                                   
REMARK 500    THR B   2       -4.56   -152.58                                   
REMARK 500    SER B  23     -138.10   -154.89                                   
REMARK 500    SER B  23     -138.10   -155.18                                   
REMARK 500    SER B  25     -167.93   -126.91                                   
REMARK 500    LEU B  33      111.37   -161.29                                   
REMARK 500    PRO B  40       88.42    -67.56                                   
REMARK 500    VAL B  41      106.81    -54.75                                   
REMARK 500    ASP B  55       46.79    -84.68                                   
REMARK 500    GLU B  78     -160.44   -122.23                                   
REMARK 500    VAL B 110      -68.11     71.18                                   
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 303  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASN A 155   OD1                                                    
REMARK 620 2 HOH A 902   O    89.3                                              
REMARK 620 3 HOH A 977   O    89.3  86.2                                        
REMARK 620 4 HOH A 978   O    89.0 176.1  97.2                                  
REMARK 620 5 HOH A 979   O   170.1  94.3  81.7  88.0                            
REMARK 620 6 THR B 135   OG1  90.9  87.7 174.0  88.8  98.5                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              NI A 301  NI                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A 246   OD1                                                    
REMARK 620 2 GLU A 249   OE1  93.3                                              
REMARK 620 3 GLU A 269   OE1  78.0  84.7                                        
REMARK 620 4 HOH A 933   O    93.1  81.7 163.2                                  
REMARK 620 5 HOH A1081   O    90.0 172.7  89.6 104.7                            
REMARK 620 6 ASP B  79   OD2 151.1  86.0  73.1 115.3  88.0                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              NI A 302  NI                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 249   OE2                                                    
REMARK 620 2 ASP A 255   OD1  85.9                                              
REMARK 620 3 PHE A 256   O    91.9  76.2                                        
REMARK 620 4 GLN A 265   OE1 174.3  89.4  90.1                                  
REMARK 620 5 GLU A 269   OE2 101.0 146.9  71.3  84.7                            
REMARK 620 6 GLU A 269   OE1  84.8 163.1 118.1  98.9  49.3                      
REMARK 620 7 ASP B  79   OD2  95.9  92.8 166.1  81.0 118.2  74.2                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI A 301                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI A 302                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 303                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MES A 900                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MES A 901                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1ZM8   RELATED DB: PDB                                   
REMARK 900 APO STRUCTURE OF NUCA                                                
DBREF  2O3B A   35   274  UNP    P38446   NUCA_ANASP      35    274             
DBREF  2O3B B    2   135  UNP    Q7A260   Q7A260_ANASP     2    135             
SEQADV 2O3B GLY A   34  UNP  P38446              CLONING ARTIFACT               
SEQADV 2O3B ALA A  121  UNP  P38446    ASP   121 ENGINEERED MUTATION            
SEQADV 2O3B GLY B    0  UNP  Q7A260              CLONING ARTIFACT               
SEQADV 2O3B SER B    1  UNP  Q7A260              CLONING ARTIFACT               
SEQRES   1 A  241  GLY SER ILE SER VAL HIS LEU LEU LEU GLY ASN PRO SER          
SEQRES   2 A  241  GLY ALA THR PRO THR LYS LEU THR PRO ASP ASN TYR LEU          
SEQRES   3 A  241  MET VAL LYS ASN GLN TYR ALA LEU SER TYR ASN ASN SER          
SEQRES   4 A  241  LYS GLY THR ALA ASN TRP VAL ALA TRP GLN LEU ASN SER          
SEQRES   5 A  241  SER TRP LEU GLY ASN ALA GLU ARG GLN ASP ASN PHE ARG          
SEQRES   6 A  241  PRO ASP LYS THR LEU PRO ALA GLY TRP VAL ARG VAL THR          
SEQRES   7 A  241  PRO SER MET TYR SER GLY SER GLY TYR ALA ARG GLY HIS          
SEQRES   8 A  241  ILE ALA PRO SER ALA ASP ARG THR LYS THR THR GLU ASP          
SEQRES   9 A  241  ASN ALA ALA THR PHE LEU MET THR ASN MET MET PRO GLN          
SEQRES  10 A  241  THR PRO ASP ASN ASN ARG ASN THR TRP GLY ASN LEU GLU          
SEQRES  11 A  241  ASP TYR CYS ARG GLU LEU VAL SER GLN GLY LYS GLU LEU          
SEQRES  12 A  241  TYR ILE VAL ALA GLY PRO ASN GLY SER LEU GLY LYS PRO          
SEQRES  13 A  241  LEU LYS GLY LYS VAL THR VAL PRO LYS SER THR TRP LYS          
SEQRES  14 A  241  ILE VAL VAL VAL LEU ASP SER PRO GLY SER GLY LEU GLU          
SEQRES  15 A  241  GLY ILE THR ALA ASN THR ARG VAL ILE ALA VAL ASN ILE          
SEQRES  16 A  241  PRO ASN ASP PRO GLU LEU ASN ASN ASP TRP ARG ALA TYR          
SEQRES  17 A  241  LYS VAL SER VAL ASP GLU LEU GLU SER LEU THR GLY TYR          
SEQRES  18 A  241  ASP PHE LEU SER ASN VAL SER PRO ASN ILE GLN THR SER          
SEQRES  19 A  241  ILE GLU SER LYS VAL ASP ASN                                  
SEQRES   1 B  136  GLY SER THR LYS THR ASN SER GLU ILE LEU GLU GLN LEU          
SEQRES   2 B  136  LYS GLN ALA SER ASP GLY LEU LEU PHE MET SER GLU SER          
SEQRES   3 B  136  GLU TYR PRO PHE GLU VAL PHE LEU TRP GLU GLY SER ALA          
SEQRES   4 B  136  PRO PRO VAL THR HIS GLU ILE VAL LEU GLN GLN THR GLY          
SEQRES   5 B  136  HIS GLY GLN ASP ALA PRO PHE LYS VAL VAL ASP ILE ASP          
SEQRES   6 B  136  SER PHE PHE SER ARG ALA THR THR PRO GLN ASP TRP TYR          
SEQRES   7 B  136  GLU ASP GLU GLU ASN ALA VAL VAL ALA LYS PHE GLN LYS          
SEQRES   8 B  136  LEU LEU GLU VAL ILE LYS SER ASN LEU LYS ASN PRO GLN          
SEQRES   9 B  136  VAL TYR ARG LEU GLY GLU VAL GLU LEU ASP VAL TYR VAL          
SEQRES  10 B  136  ILE GLY GLU THR PRO ALA GLY ASN LEU ALA GLY ILE SER          
SEQRES  11 B  136  THR LYS VAL VAL GLU THR                                      
HET     NI  A 301       1                                                       
HET     NI  A 302       1                                                       
HET     MG  A 303       1                                                       
HET    MES  A 900      12                                                       
HET    MES  A 901      12                                                       
HETNAM      NI NICKEL (II) ION                                                  
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID                             
FORMUL   3   NI    2(NI 2+)                                                     
FORMUL   5   MG    MG 2+                                                        
FORMUL   6  MES    2(C6 H13 N O4 S)                                             
FORMUL   8  HOH   *227(H2 O)                                                    
HELIX    1   1 SER A   37  LEU A   41  5                                   5    
HELIX    2   2 ASN A   84  LEU A   88  5                                   5    
HELIX    3   3 THR A  111  SER A  116  5                                   6    
HELIX    4   4 PRO A  127  ARG A  131  5                                   5    
HELIX    5   5 THR A  134  THR A  141  1                                   8    
HELIX    6   6 PHE A  142  THR A  145  5                                   4    
HELIX    7   7 THR A  151  ASN A  157  1                                   7    
HELIX    8   8 ASN A  157  GLN A  172  1                                  16    
HELIX    9   9 PRO A  189  LYS A  193  5                                   5    
HELIX   10  10 SER A  212  ILE A  217  5                                   6    
HELIX   11  11 ASP A  237  LYS A  242  5                                   6    
HELIX   12  12 SER A  244  GLY A  253  1                                  10    
HELIX   13  13 SER A  261  LYS A  271  1                                  11    
HELIX   14  14 THR B    4  ASP B   17  1                                  14    
HELIX   15  15 THR B   42  GLY B   51  1                                  10    
HELIX   16  16 ASP B   62  PHE B   67  1                                   6    
HELIX   17  17 PHE B   67  THR B   72  1                                   6    
HELIX   18  18 GLU B   78  LEU B   99  1                                  22    
SHEET    1   A 6 TYR A  58  VAL A  61  0                                        
SHEET    2   A 6 ALA A  66  ASN A  70 -1  O  TYR A  69   N  TYR A  58           
SHEET    3   A 6 THR A  75  LEU A  83 -1  O  ASN A  77   N  SER A  68           
SHEET    4   A 6 GLU A 175  ASN A 183 -1  O  LEU A 176   N  LEU A  83           
SHEET    5   A 6 SER A 199  LEU A 207 -1  O  ILE A 203   N  VAL A 179           
SHEET    6   A 6 ARG A 222  PRO A 229 -1  O  ILE A 224   N  VAL A 204           
SHEET    1   B 2 ALA A 121  HIS A 124  0                                        
SHEET    2   B 2 MET A 147  GLN A 150 -1  O  GLN A 150   N  ALA A 121           
SHEET    1   C 2 PHE B  21  MET B  22  0                                        
SHEET    2   C 2 GLU B  26  TYR B  27 -1  O  TYR B  27   N  PHE B  21           
SHEET    1   D 5 GLU B  30  TRP B  34  0                                        
SHEET    2   D 5 LEU B 125  VAL B 133 -1  O  GLY B 127   N  PHE B  32           
SHEET    3   D 5 GLU B 111  GLU B 119 -1  N  VAL B 116   O  ILE B 128           
SHEET    4   D 5 LYS B 100  LEU B 107 -1  N  LEU B 107   O  ASP B 113           
SHEET    5   D 5 PHE B  58  VAL B  61 -1  N  LYS B  59   O  ARG B 106           
LINK         OD1 ASN A 155                MG    MG A 303     1555   1555  2.03  
LINK         OD1 ASP A 246                NI    NI A 301     1555   1555  2.62  
LINK         OE1 GLU A 249                NI    NI A 301     1555   1555  2.27  
LINK         OE2 GLU A 249                NI    NI A 302     1555   1555  2.47  
LINK         OD1 ASP A 255                NI    NI A 302     1555   1555  2.51  
LINK         O   PHE A 256                NI    NI A 302     1555   1555  2.58  
LINK         OE1 GLN A 265                NI    NI A 302     1555   1555  2.27  
LINK         OE1 GLU A 269                NI    NI A 301     1555   1555  2.50  
LINK         OE2 GLU A 269                NI    NI A 302     1555   1555  2.55  
LINK         OE1 GLU A 269                NI    NI A 302     1555   1555  2.70  
LINK        NI    NI A 301                 O   HOH A 933     1555   1555  2.31  
LINK        NI    NI A 301                 O   HOH A1081     1555   1555  2.11  
LINK        NI    NI A 301                 OD2 ASP B  79     1555   6555  2.56  
LINK        NI    NI A 302                 OD2 ASP B  79     1555   6555  2.28  
LINK        MG    MG A 303                 O   HOH A 902     1555   1555  2.34  
LINK        MG    MG A 303                 O   HOH A 977     1555   1555  1.86  
LINK        MG    MG A 303                 O   HOH A 978     1555   1555  2.18  
LINK        MG    MG A 303                 O   HOH A 979     1555   1555  2.29  
LINK        MG    MG A 303                 OG1 THR B 135     1555   1555  2.00  
SITE     1 AC1  6 ASP A 246  GLU A 249  GLU A 269  HOH A 933                    
SITE     2 AC1  6 HOH A1081  ASP B  79                                          
SITE     1 AC2  6 GLU A 249  ASP A 255  PHE A 256  GLN A 265                    
SITE     2 AC2  6 GLU A 269  ASP B  79                                          
SITE     1 AC3  6 ASN A 155  HOH A 902  HOH A 977  HOH A 978                    
SITE     2 AC3  6 HOH A 979  THR B 135                                          
SITE     1 AC4  7 GLU A  92  GLN A  94  HOH A1076  VAL B  61                    
SITE     2 AC4  7 PHE B  66  ARG B  69  ARG B 106                               
SITE     1 AC5  6 ARG A 156  GLY A 160  ASP A 164  GLU B 109                    
SITE     2 AC5  6 VAL B 110  THR B 135                                          
CRYST1   87.225   87.225  138.977  90.00  90.00  90.00 P 43 21 2     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      0.011465  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.011465  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007195        0.00000