HEADER    IMMUNE SYSTEM                           23-OCT-13   4NC2              
TITLE     CRYSTAL STRUCTURE OF TCDB-B1 BOUND TO B39 VHH                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TOXIN B;                                                   
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: UNP RESIDUES 2248-2366;                                    
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MOL_ID: 2;                                                           
COMPND   7 MOLECULE: B39 VHH;                                                   
COMPND   8 CHAIN: B;                                                            
COMPND   9 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: CLOSTRIDIUM DIFFICILE;                          
SOURCE   3 ORGANISM_TAXID: 1496;                                                
SOURCE   4 STRAIN: VPI 10463;                                                   
SOURCE   5 GENE: TCDB, TOXB;                                                    
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 MOL_ID: 2;                                                           
SOURCE   9 ORGANISM_SCIENTIFIC: LAMA GLAMA;                                     
SOURCE  10 ORGANISM_TAXID: 9844;                                                
SOURCE  11 GENE: VHH;                                                           
SOURCE  12 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  13 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    ANTIBODY-ANTIGEN COMPLEX, IMMUNE SYSTEM                               
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    T.MURASE,L.EUGENIO,M.SCHORR,G.HUSSACK,J.TANHA,E.N.KITOVA,J.S.KLASSEN, 
AUTHOR   2 K.K.S.NG                                                             
REVDAT   5   16-OCT-24 4NC2    1       REMARK                                   
REVDAT   4   20-SEP-23 4NC2    1       SEQADV                                   
REVDAT   3   12-FEB-14 4NC2    1       JRNL                                     
REVDAT   2   01-JAN-14 4NC2    1       JRNL                                     
REVDAT   1   11-DEC-13 4NC2    0                                                
JRNL        AUTH   T.MURASE,L.EUGENIO,M.SCHORR,G.HUSSACK,J.TANHA,E.N.KITOVA,    
JRNL        AUTH 2 J.S.KLASSEN,K.K.NG                                           
JRNL        TITL   STRUCTURAL BASIS FOR ANTIBODY RECOGNITION IN THE             
JRNL        TITL 2 RECEPTOR-BINDING DOMAINS OF TOXINS A AND B FROM CLOSTRIDIUM  
JRNL        TITL 3 DIFFICILE.                                                   
JRNL        REF    J.BIOL.CHEM.                  V. 289  2331 2014              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   24311789                                                     
JRNL        DOI    10.1074/JBC.M113.505917                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.7.0029                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 11831                          
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) : 0.194                           
REMARK   3   R VALUE            (WORKING SET) : 0.192                           
REMARK   3   FREE R VALUE                     : 0.229                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 623                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.56                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 847                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.0                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3200                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 44                           
REMARK   3   BIN FREE R VALUE                    : 0.3510                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1944                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 11                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 56.20                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 58.46                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -2.39000                                             
REMARK   3    B22 (A**2) : -2.39000                                             
REMARK   3    B33 (A**2) : 7.76000                                              
REMARK   3    B12 (A**2) : -2.39000                                             
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): 0.342         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.237         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.201         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 19.877        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.955                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.940                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1997 ; 0.007 ; 0.020       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2704 ; 1.154 ; 1.918       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   241 ; 6.711 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   110 ;36.576 ;24.455       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   305 ;16.630 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     9 ;17.401 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   269 ; 0.086 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1596 ; 0.005 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
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  : 2                                          
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     5        A   125                          
REMARK   3    ORIGIN FOR THE GROUP (A): -36.4371  17.3570  14.8524              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.1593 T22:   0.1911                                     
REMARK   3      T33:   0.0404 T12:   0.0142                                     
REMARK   3      T13:   0.0593 T23:  -0.0259                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   4.0007 L22:   1.9574                                     
REMARK   3      L33:   1.0465 L12:   1.2080                                     
REMARK   3      L13:  -1.1543 L23:  -0.6806                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.1002 S12:   0.3102 S13:  -0.2698                       
REMARK   3      S21:  -0.1002 S22:  -0.0650 S23:  -0.1621                       
REMARK   3      S31:   0.1696 S32:  -0.1943 S33:   0.1652                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   B     1        B   122                          
REMARK   3    ORIGIN FOR THE GROUP (A):  -7.9168  18.8020   6.3749              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2570 T22:   0.2725                                     
REMARK   3      T33:   0.1787 T12:   0.0914                                     
REMARK   3      T13:   0.1529 T23:  -0.0811                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   6.6874 L22:   2.9954                                     
REMARK   3      L33:   2.0247 L12:   1.7771                                     
REMARK   3      L13:  -1.2028 L23:   0.2031                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.1631 S12:   0.7875 S13:  -0.6405                       
REMARK   3      S21:  -0.3169 S22:   0.2098 S23:  -0.4153                       
REMARK   3      S31:   0.1497 S32:   0.1276 S33:  -0.0466                       
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 4NC2 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-NOV-13.                  
REMARK 100 THE DEPOSITION ID IS D_1000083013.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 07-MAR-13                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.7                                
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL12-2                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.98                               
REMARK 200  MONOCHROMATOR                  : SI(111), DOUBLE CRYSTAL            
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : RAYONIX MX300HE                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XSCALE                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 12441                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 40.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY                : 4.700                              
REMARK 200  R MERGE                    (I) : 0.05800                            
REMARK 200  R SYM                      (I) : 0.05800                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 18.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.64                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.70                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.78400                            
REMARK 200  R SYM FOR SHELL            (I) : 0.78400                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.900                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: PDB ENTRY 2G7C                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 57.42                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.89                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.86 M SODIUM CITRATE, PH 6.7, 0.6 M     
REMARK 280  TMAO, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 295K               
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 2 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+2/3                                            
REMARK 290       3555   -X+Y,-X,Z+1/3                                           
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z+1/3                                           
REMARK 290       6555   -X,-X+Y,-Z+2/3                                          
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       39.64667            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       19.82333            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       19.82333            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       39.64667            
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: 1580 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 13240 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -6.0 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     1                                                      
REMARK 465     HIS A     2                                                      
REMARK 465     HIS A     3                                                      
REMARK 465     HIS A     4                                                      
REMARK 465     GLU A   126                                                      
REMARK 465     GLY B   123                                                      
REMARK 465     SER B   124                                                      
REMARK 465     GLU B   125                                                      
REMARK 465     GLN B   126                                                      
REMARK 465     LYS B   127                                                      
REMARK 465     LEU B   128                                                      
REMARK 465     ILE B   129                                                      
REMARK 465     SER B   130                                                      
REMARK 465     GLU B   131                                                      
REMARK 465     GLU B   132                                                      
REMARK 465     ASP B   133                                                      
REMARK 465     LEU B   134                                                      
REMARK 465     ASN B   135                                                      
REMARK 465     HIS B   136                                                      
REMARK 465     HIS B   137                                                      
REMARK 465     HIS B   138                                                      
REMARK 465     HIS B   139                                                      
REMARK 465     HIS B   140                                                      
REMARK 465     HIS B   141                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   N    GLN B     1     OE1  GLN B   114     6555     2.17            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    GLU A  19     -121.29     57.64                                   
REMARK 500    ASP A  40        3.75     85.47                                   
REMARK 500    GLU A  76      114.21    -39.72                                   
REMARK 500    ASP A  89     -131.63     50.48                                   
REMARK 500    THR B  28       98.61    -68.38                                   
REMARK 500    TRP B 101      -72.54    -66.77                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 4NBX   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 4NBY   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 4NBZ   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 4NC0   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 4NC1   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2G7C   RELATED DB: PDB                                   
REMARK 900 TCDA-A2                                                              
DBREF  4NC2 A    8   126  UNP    P18177   TOXB_CLODI    2248   2366             
DBREF  4NC2 B    1   141  PDB    4NC2     4NC2             1    141             
SEQADV 4NC2 MET A    1  UNP  P18177              EXPRESSION TAG                 
SEQADV 4NC2 HIS A    2  UNP  P18177              EXPRESSION TAG                 
SEQADV 4NC2 HIS A    3  UNP  P18177              EXPRESSION TAG                 
SEQADV 4NC2 HIS A    4  UNP  P18177              EXPRESSION TAG                 
SEQADV 4NC2 HIS A    5  UNP  P18177              EXPRESSION TAG                 
SEQADV 4NC2 HIS A    6  UNP  P18177              EXPRESSION TAG                 
SEQADV 4NC2 HIS A    7  UNP  P18177              EXPRESSION TAG                 
SEQRES   1 A  126  MET HIS HIS HIS HIS HIS HIS LYS GLY ILE MET ARG THR          
SEQRES   2 A  126  GLY LEU ILE SER PHE GLU ASN ASN ASN TYR TYR PHE ASN          
SEQRES   3 A  126  GLU ASN GLY GLU MET GLN PHE GLY TYR ILE ASN ILE GLU          
SEQRES   4 A  126  ASP LYS MET PHE TYR PHE GLY GLU ASP GLY VAL MET GLN          
SEQRES   5 A  126  ILE GLY VAL PHE ASN THR PRO ASP GLY PHE LYS TYR PHE          
SEQRES   6 A  126  ALA HIS GLN ASN THR LEU ASP GLU ASN PHE GLU GLY GLU          
SEQRES   7 A  126  SER ILE ASN TYR THR GLY TRP LEU ASP LEU ASP GLU LYS          
SEQRES   8 A  126  ARG TYR TYR PHE THR ASP GLU TYR ILE ALA ALA THR GLY          
SEQRES   9 A  126  SER VAL ILE ILE ASP GLY GLU GLU TYR TYR PHE ASP PRO          
SEQRES  10 A  126  ASP THR ALA GLN LEU VAL ILE SER GLU                          
SEQRES   1 B  141  GLN VAL GLN LEU VAL GLU SER GLY GLY GLY LEU VAL GLN          
SEQRES   2 B  141  ALA GLY GLY SER LEU ARG LEU SER CYS ALA ALA SER GLY          
SEQRES   3 B  141  LEU THR PHE SER ARG TYR VAL MET GLY TRP PHE ARG GLN          
SEQRES   4 B  141  ALA PRO GLY LYS GLU ARG GLU PHE VAL ALA ALA ILE THR          
SEQRES   5 B  141  TRP GLY GLY THR PRO ASN TYR ALA ASP SER VAL LYS GLY          
SEQRES   6 B  141  ARG PHE THR ILE SER ARG ASP ASN SER LYS ASN THR GLN          
SEQRES   7 B  141  TYR LEU GLN MET ASN SER LEU LYS PRO GLU ASP THR ALA          
SEQRES   8 B  141  VAL TYR TYR CYS ALA ALA GLY LEU GLY TRP ASP SER ARG          
SEQRES   9 B  141  TYR SER GLN SER TYR ASN TYR TRP GLY GLN GLY THR GLN          
SEQRES  10 B  141  VAL THR VAL SER SER GLY SER GLU GLN LYS LEU ILE SER          
SEQRES  11 B  141  GLU GLU ASP LEU ASN HIS HIS HIS HIS HIS HIS                  
FORMUL   3  HOH   *11(H2 O)                                                     
HELIX    1   1 THR B   28  TYR B   32  5                                   5    
HELIX    2   2 LYS B   86  THR B   90  5                                   5    
HELIX    3   3 TYR B  105  TYR B  109  5                                   5    
SHEET    1   A 2 GLY A  14  PHE A  18  0                                        
SHEET    2   A 2 ASN A  21  PHE A  25 -1  O  TYR A  23   N  ILE A  16           
SHEET    1   B 2 GLY A  34  ILE A  38  0                                        
SHEET    2   B 2 LYS A  41  PHE A  45 -1  O  PHE A  43   N  ILE A  36           
SHEET    1   C 2 GLY A  54  THR A  58  0                                        
SHEET    2   C 2 GLY A  61  PHE A  65 -1  O  PHE A  65   N  GLY A  54           
SHEET    1   D 2 GLY A  84  LEU A  88  0                                        
SHEET    2   D 2 LYS A  91  PHE A  95 -1  O  PHE A  95   N  GLY A  84           
SHEET    1   E 2 GLY A 104  ILE A 108  0                                        
SHEET    2   E 2 GLU A 111  PHE A 115 -1  O  PHE A 115   N  GLY A 104           
SHEET    1   F 4 GLN B   3  SER B   7  0                                        
SHEET    2   F 4 LEU B  18  SER B  25 -1  O  SER B  21   N  SER B   7           
SHEET    3   F 4 THR B  77  MET B  82 -1  O  MET B  82   N  LEU B  18           
SHEET    4   F 4 PHE B  67  ASP B  72 -1  N  ASP B  72   O  THR B  77           
SHEET    1   G 6 GLY B  10  GLN B  13  0                                        
SHEET    2   G 6 THR B 116  SER B 121  1  O  GLN B 117   N  GLY B  10           
SHEET    3   G 6 ALA B  91  GLY B  98 -1  N  TYR B  93   O  THR B 116           
SHEET    4   G 6 VAL B  33  GLN B  39 -1  N  GLN B  39   O  VAL B  92           
SHEET    5   G 6 GLU B  46  ILE B  51 -1  O  GLU B  46   N  ARG B  38           
SHEET    6   G 6 PRO B  57  TYR B  59 -1  O  ASN B  58   N  ALA B  50           
SHEET    1   H 4 GLY B  10  GLN B  13  0                                        
SHEET    2   H 4 THR B 116  SER B 121  1  O  GLN B 117   N  GLY B  10           
SHEET    3   H 4 ALA B  91  GLY B  98 -1  N  TYR B  93   O  THR B 116           
SHEET    4   H 4 TYR B 111  TRP B 112 -1  O  TYR B 111   N  ALA B  97           
SSBOND   1 CYS B   22    CYS B   95                          1555   1555  2.07  
CRYST1  101.300  101.300   59.470  90.00  90.00 120.00 P 32 2 1      6          
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      0.009872  0.005699  0.000000        0.00000                         
SCALE2      0.000000  0.011399  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.016815        0.00000