HEADER    MEMBRANE PROTEIN                        19-OCT-06   2ITC              
TITLE     POTASSIUM CHANNEL KCSA-FAB COMPLEX IN SODIUM CHLORIDE                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ANTIBODY FAB FRAGMENT HEAVY CHAIN;                         
COMPND   3 CHAIN: A;                                                            
COMPND   4 MOL_ID: 2;                                                           
COMPND   5 MOLECULE: ANTIBODY FAB FRAGMENT LIGHT CHAIN;                         
COMPND   6 CHAIN: B;                                                            
COMPND   7 MOL_ID: 3;                                                           
COMPND   8 MOLECULE: VOLTAGE-GATED POTASSIUM CHANNEL;                           
COMPND   9 CHAIN: C;                                                            
COMPND  10 FRAGMENT: RESIDUES 1-124;                                            
COMPND  11 ENGINEERED: YES;                                                     
COMPND  12 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: MUS MUSCULUS;                                   
SOURCE   3 ORGANISM_COMMON: HOUSE MOUSE;                                        
SOURCE   4 ORGANISM_TAXID: 10090;                                               
SOURCE   5 MOL_ID: 2;                                                           
SOURCE   6 ORGANISM_SCIENTIFIC: MUS MUSCULUS;                                   
SOURCE   7 ORGANISM_COMMON: HOUSE MOUSE;                                        
SOURCE   8 ORGANISM_TAXID: 10090;                                               
SOURCE   9 MOL_ID: 3;                                                           
SOURCE  10 ORGANISM_SCIENTIFIC: STREPTOMYCES LIVIDANS;                          
SOURCE  11 ORGANISM_TAXID: 1916;                                                
SOURCE  12 GENE: KCSA, SKC1;                                                    
SOURCE  13 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  14 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  15 EXPRESSION_SYSTEM_STRAIN: XL1-BLUE(DE3);                             
SOURCE  16 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  17 EXPRESSION_SYSTEM_PLASMID: PQE-60                                    
KEYWDS    VOLTAGE-GATED CHANNEL, TRANSMEMBRANE, IONIC CHANNEL, ION TRANSPORT, K 
KEYWDS   2 CHANNEL, PROTEIN-ANTIBODY FAB COMPLEX, MEMBRANE PROTEIN              
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    S.W.LOCKLESS,M.ZHOU,R.MACKINNON                                       
REVDAT   6   13-NOV-24 2ITC    1       REMARK                                   
REVDAT   5   20-OCT-21 2ITC    1       REMARK SEQADV LINK                       
REVDAT   4   18-OCT-17 2ITC    1       REMARK                                   
REVDAT   3   16-NOV-11 2ITC    1       VERSN  HETATM                            
REVDAT   2   24-FEB-09 2ITC    1       VERSN                                    
REVDAT   1   15-MAY-07 2ITC    0                                                
JRNL        AUTH   S.W.LOCKLESS,M.ZHOU,R.MACKINNON                              
JRNL        TITL   STRUCTURAL AND THERMODYNAMIC PROPERTIES OF SELECTIVE ION     
JRNL        TITL 2 BINDING IN A K(+) CHANNEL.                                   
JRNL        REF    PLOS BIOL.                    V.   5  E121 2007              
JRNL        REFN                   ISSN 1544-9173                               
JRNL        PMID   17472437                                                     
JRNL        DOI    10.1371/JOURNAL.PBIO.0050121                                 
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
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 : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 42.79                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 2263832.000                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 15072                          
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) : 0.246                           
REMARK   3   FREE R VALUE                     : 0.265                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 748                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.010                           
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) : 3.10                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.29                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 45.80                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1212                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3430                       
REMARK   3   BIN FREE R VALUE                    : 0.4440                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 4.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 50                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.063                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4074                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 1                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 85.30                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 7.76000                                              
REMARK   3    B22 (A**2) : 7.76000                                              
REMARK   3    B33 (A**2) : -15.52000                                            
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) : 0.42                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.52                            
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) : 0.50                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.71                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.009                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 25.30                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.860                           
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) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.24                                                 
REMARK   3   BSOL        : 22.22                                                
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  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2ITC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-OCT-06.                  
REMARK 100 THE DEPOSITION ID IS D_1000039990.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 18-AUG-05                          
REMARK 200  TEMPERATURE           (KELVIN) : 200                                
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X25                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.1                                
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 : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 15167                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 3.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY                : 3.800                              
REMARK 200  R MERGE                    (I) : 0.08800                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 9.4000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.31                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.90                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.46900                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 67.74                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.81                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 21% PEG400, 50 MM MGACETATE, 150 MM      
REMARK 280  NACL, PH 7.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K       
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 4                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -Y,X,Z                                                  
REMARK 290       4555   Y,-X,Z                                                  
REMARK 290       5555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -Y+1/2,X+1/2,Z+1/2                                      
REMARK 290       8555   Y+1/2,-X+1/2,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        0.00000            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       77.75050            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       77.75050            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       37.91000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       77.75050            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       77.75050            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       37.91000            
REMARK 290   SMTRY1   7  0.000000 -1.000000  0.000000       77.75050            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000       77.75050            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       37.91000            
REMARK 290   SMTRY1   8  0.000000  1.000000  0.000000       77.75050            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000       77.75050            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       37.91000            
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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS GENERATED FROM THE FOLLOWING      
REMARK 300 OPERATORS: X,Y,Z -X+2,-Y,Z Y+1,-X+1,Z -Y+1,X-1,Z                     
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: DODECAMERIC                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C                               
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 350   BIOMT1   2 -1.000000  0.000000  0.000000      311.00200            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000 -1.000000  0.000000      155.50100            
REMARK 350   BIOMT2   3  1.000000  0.000000  0.000000     -155.50100            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4  0.000000  1.000000  0.000000      155.50100            
REMARK 350   BIOMT2   4 -1.000000  0.000000  0.000000      155.50100            
REMARK 350   BIOMT3   4  0.000000  0.000000  1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375 NA    NA C 125  LIES ON A SPECIAL POSITION.                          
REMARK 375 NA    NA C 126  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH C 127  LIES ON A SPECIAL POSITION.                          
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 C     1                                                      
REMARK 465     ALA C     2                                                      
REMARK 465     PRO C     3                                                      
REMARK 465     MET C     4                                                      
REMARK 465     LEU C     5                                                      
REMARK 465     SER C     6                                                      
REMARK 465     GLY C     7                                                      
REMARK 465     LEU C     8                                                      
REMARK 465     LEU C     9                                                      
REMARK 465     ALA C    10                                                      
REMARK 465     ARG C    11                                                      
REMARK 465     LEU C    12                                                      
REMARK 465     VAL C    13                                                      
REMARK 465     LYS C    14                                                      
REMARK 465     LEU C    15                                                      
REMARK 465     LEU C    16                                                      
REMARK 465     LEU C    17                                                      
REMARK 465     GLY C    18                                                      
REMARK 465     ARG C    19                                                      
REMARK 465     HIS C    20                                                      
REMARK 465     GLY C    21                                                      
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    ASN A 138     -148.86    -99.11                                   
REMARK 500    PRO A 154     -166.08   -114.33                                   
REMARK 500    ALA B  51      -44.56     61.62                                   
REMARK 500    SER B  77       87.18     62.33                                   
REMARK 500    ALA B  84     -167.40   -176.33                                   
REMARK 500    ASN B 190      -76.62    -85.57                                   
REMARK 500    PHE B 209      144.37   -170.70                                   
REMARK 500    LEU C  59       48.15    -85.76                                   
REMARK 500    ARG C 121       -9.85    -55.60                                   
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                              NA C 125  NA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLY C  77   O                                                      
REMARK 620 2 GLY C  77   O    88.5                                              
REMARK 620 3 GLY C  77   O   161.2  88.5                                        
REMARK 620 4 GLY C  77   O    88.5 161.2  88.5                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA C 125                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA C 126                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2ITD   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2NLJ   RELATED DB: PDB                                   
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 SEQUENCING OF THE DNA CONSTRUCT SHOWS THAT                           
REMARK 999 POSITION 2 OF CHAIN C IS AN ALA.                                     
DBREF  2ITC C    1   124  UNP    P0A334   KCSA_STRLI       1    124             
DBREF  2ITC A    1   219  PDB    2ITC     2ITC             1    219             
DBREF  2ITC B    1   212  PDB    2ITC     2ITC             1    212             
SEQADV 2ITC ALA C    2  UNP  P0A334    PRO     2 SEE REMARK 999                 
SEQADV 2ITC CYS C   90  UNP  P0A334    LEU    90 ENGINEERED MUTATION            
SEQRES   1 A  219  GLN VAL GLN LEU GLN GLN PRO GLY ALA GLU LEU VAL LYS          
SEQRES   2 A  219  PRO GLY ALA SER VAL LYS LEU SER CYS LYS ALA SER GLY          
SEQRES   3 A  219  TYR THR PHE THR SER ASP TRP ILE HIS TRP VAL LYS GLN          
SEQRES   4 A  219  ARG PRO GLY HIS GLY LEU GLU TRP ILE GLY GLU ILE ILE          
SEQRES   5 A  219  PRO SER TYR GLY ARG ALA ASN TYR ASN GLU LYS ILE GLN          
SEQRES   6 A  219  LYS LYS ALA THR LEU THR ALA ASP LYS SER SER SER THR          
SEQRES   7 A  219  ALA PHE MET GLN LEU SER SER LEU THR SER GLU ASP SER          
SEQRES   8 A  219  ALA VAL TYR TYR CYS ALA ARG GLU ARG GLY ASP GLY TYR          
SEQRES   9 A  219  PHE ALA VAL TRP GLY ALA GLY THR THR VAL THR VAL SER          
SEQRES  10 A  219  SER ALA LYS THR THR PRO PRO SER VAL TYR PRO LEU ALA          
SEQRES  11 A  219  PRO GLY SER ALA ALA GLN THR ASN SER MET VAL THR LEU          
SEQRES  12 A  219  GLY CYS LEU VAL LYS GLY TYR PHE PRO GLU PRO VAL THR          
SEQRES  13 A  219  VAL THR TRP ASN SER GLY SER LEU SER SER GLY VAL HIS          
SEQRES  14 A  219  THR PHE PRO ALA VAL LEU GLN SER ASP LEU TYR THR LEU          
SEQRES  15 A  219  SER SER SER VAL THR VAL PRO SER SER SER TRP PRO SER          
SEQRES  16 A  219  GLU THR VAL THR CYS ASN VAL ALA HIS PRO ALA SER SER          
SEQRES  17 A  219  THR LYS VAL ASP LYS LYS ILE VAL PRO ARG ASP                  
SEQRES   1 B  212  ASP ILE LEU LEU THR GLN SER PRO ALA ILE LEU SER VAL          
SEQRES   2 B  212  SER PRO GLY GLU ARG VAL SER PHE SER CYS ARG ALA SER          
SEQRES   3 B  212  GLN SER ILE GLY THR ASP ILE HIS TRP TYR GLN GLN ARG          
SEQRES   4 B  212  THR ASN GLY SER PRO ARG LEU LEU ILE LYS TYR ALA SER          
SEQRES   5 B  212  GLU SER ILE SER GLY ILE PRO SER ARG PHE SER GLY SER          
SEQRES   6 B  212  GLY SER GLY THR ASP PHE THR LEU SER ILE ASN SER VAL          
SEQRES   7 B  212  GLU SER GLU ASP ILE ALA ASN TYR TYR CYS GLN GLN SER          
SEQRES   8 B  212  ASN ARG TRP PRO PHE THR PHE GLY SER GLY THR LYS LEU          
SEQRES   9 B  212  GLU ILE LYS ARG ALA ASP ALA ALA PRO THR VAL SER ILE          
SEQRES  10 B  212  PHE PRO PRO SER SER GLU GLN LEU THR SER GLY GLY ALA          
SEQRES  11 B  212  SER VAL VAL CYS PHE LEU ASN ASN PHE TYR PRO LYS ASP          
SEQRES  12 B  212  ILE ASN VAL LYS TRP LYS ILE ASP GLY SER GLU ARG GLN          
SEQRES  13 B  212  ASN GLY VAL LEU ASN SER TRP THR ASP GLN ASP SER LYS          
SEQRES  14 B  212  ASP SER THR TYR SER MET SER SER THR LEU THR LEU THR          
SEQRES  15 B  212  LYS ASP GLU TYR GLU ARG HIS ASN SER TYR THR CYS GLU          
SEQRES  16 B  212  ALA THR HIS LYS THR SER THR SER PRO ILE VAL LYS SER          
SEQRES  17 B  212  PHE ASN ARG ASN                                              
SEQRES   1 C  124  MET ALA PRO MET LEU SER GLY LEU LEU ALA ARG LEU VAL          
SEQRES   2 C  124  LYS LEU LEU LEU GLY ARG HIS GLY SER ALA LEU HIS TRP          
SEQRES   3 C  124  ARG ALA ALA GLY ALA ALA THR VAL LEU LEU VAL ILE VAL          
SEQRES   4 C  124  LEU LEU ALA GLY SER TYR LEU ALA VAL LEU ALA GLU ARG          
SEQRES   5 C  124  GLY ALA PRO GLY ALA GLN LEU ILE THR TYR PRO ARG ALA          
SEQRES   6 C  124  LEU TRP TRP SER VAL GLU THR ALA THR THR VAL GLY TYR          
SEQRES   7 C  124  GLY ASP LEU TYR PRO VAL THR LEU TRP GLY ARG CYS VAL          
SEQRES   8 C  124  ALA VAL VAL VAL MET VAL ALA GLY ILE THR SER PHE GLY          
SEQRES   9 C  124  LEU VAL THR ALA ALA LEU ALA THR TRP PHE VAL GLY ARG          
SEQRES  10 C  124  GLU GLN GLU ARG ARG GLY HIS                                  
HET     NA  C 125       1                                                       
HET     NA  C 126       1                                                       
HETNAM      NA SODIUM ION                                                       
FORMUL   4   NA    2(NA 1+)                                                     
FORMUL   6  HOH   *(H2 O)                                                       
HELIX    1   1 THR A   87  SER A   91  5                                   5    
HELIX    2   2 SER A  161  SER A  163  5                                   3    
HELIX    3   3 SER A  191  TRP A  193  5                                   3    
HELIX    4   4 PRO A  205  SER A  208  5                                   4    
HELIX    5   5 GLU B   79  ILE B   83  5                                   5    
HELIX    6   6 SER B  121  THR B  126  1                                   6    
HELIX    7   7 LYS B  183  ARG B  188  1                                   6    
HELIX    8   8 ALA C   23  ARG C   52  1                                  30    
HELIX    9   9 THR C   61  THR C   75  1                                  15    
HELIX   10  10 THR C   85  ARG C  122  1                                  38    
SHEET    1   A 4 LEU A   4  GLN A   5  0                                        
SHEET    2   A 4 VAL A  18  ALA A  24 -1  O  LYS A  23   N  GLN A   5           
SHEET    3   A 4 THR A  78  LEU A  83 -1  O  LEU A  83   N  VAL A  18           
SHEET    4   A 4 LEU A  70  ASP A  73 -1  N  THR A  71   O  PHE A  80           
SHEET    1   B 6 ALA A   9  VAL A  12  0                                        
SHEET    2   B 6 THR A 112  VAL A 116  1  O  THR A 115   N  VAL A  12           
SHEET    3   B 6 ALA A  92  GLU A  99 -1  N  ALA A  92   O  VAL A 114           
SHEET    4   B 6 TRP A  33  GLN A  39 -1  N  TRP A  33   O  GLU A  99           
SHEET    5   B 6 GLU A  46  ILE A  51 -1  O  ILE A  51   N  ILE A  34           
SHEET    6   B 6 ALA A  58  TYR A  60 -1  O  ASN A  59   N  GLU A  50           
SHEET    1   C 4 ALA A   9  VAL A  12  0                                        
SHEET    2   C 4 THR A 112  VAL A 116  1  O  THR A 115   N  VAL A  12           
SHEET    3   C 4 ALA A  92  GLU A  99 -1  N  ALA A  92   O  VAL A 114           
SHEET    4   C 4 PHE A 105  TRP A 108 -1  O  VAL A 107   N  ARG A  98           
SHEET    1   D 4 SER A 125  LEU A 129  0                                        
SHEET    2   D 4 MET A 140  TYR A 150 -1  O  LEU A 146   N  TYR A 127           
SHEET    3   D 4 LEU A 179  PRO A 189 -1  O  TYR A 180   N  TYR A 150           
SHEET    4   D 4 VAL A 168  THR A 170 -1  N  HIS A 169   O  SER A 185           
SHEET    1   E 4 SER A 125  LEU A 129  0                                        
SHEET    2   E 4 MET A 140  TYR A 150 -1  O  LEU A 146   N  TYR A 127           
SHEET    3   E 4 LEU A 179  PRO A 189 -1  O  TYR A 180   N  TYR A 150           
SHEET    4   E 4 VAL A 174  GLN A 176 -1  N  GLN A 176   O  LEU A 179           
SHEET    1   F 3 THR A 156  TRP A 159  0                                        
SHEET    2   F 3 THR A 199  HIS A 204 -1  O  ASN A 201   N  THR A 158           
SHEET    3   F 3 THR A 209  LYS A 214 -1  O  THR A 209   N  HIS A 204           
SHEET    1   G 4 LEU B   4  THR B   5  0                                        
SHEET    2   G 4 VAL B  19  ALA B  25 -1  O  ARG B  24   N  THR B   5           
SHEET    3   G 4 ASP B  70  ILE B  75 -1  O  LEU B  73   N  PHE B  21           
SHEET    4   G 4 PHE B  62  SER B  67 -1  N  SER B  63   O  SER B  74           
SHEET    1   H 6 ILE B  10  VAL B  13  0                                        
SHEET    2   H 6 THR B 102  ILE B 106  1  O  GLU B 105   N  LEU B  11           
SHEET    3   H 6 ASN B  85  GLN B  90 -1  N  TYR B  86   O  THR B 102           
SHEET    4   H 6 ILE B  33  GLN B  38 -1  N  GLN B  38   O  ASN B  85           
SHEET    5   H 6 ARG B  45  LYS B  49 -1  O  LEU B  47   N  TRP B  35           
SHEET    6   H 6 GLU B  53  SER B  54 -1  O  GLU B  53   N  LYS B  49           
SHEET    1   I 4 ILE B  10  VAL B  13  0                                        
SHEET    2   I 4 THR B 102  ILE B 106  1  O  GLU B 105   N  LEU B  11           
SHEET    3   I 4 ASN B  85  GLN B  90 -1  N  TYR B  86   O  THR B 102           
SHEET    4   I 4 THR B  97  PHE B  98 -1  O  THR B  97   N  GLN B  90           
SHEET    1   J 4 THR B 114  PHE B 118  0                                        
SHEET    2   J 4 GLY B 129  PHE B 139 -1  O  PHE B 135   N  SER B 116           
SHEET    3   J 4 TYR B 173  THR B 182 -1  O  LEU B 181   N  ALA B 130           
SHEET    4   J 4 VAL B 159  TRP B 163 -1  N  LEU B 160   O  THR B 178           
SHEET    1   K 4 SER B 153  ARG B 155  0                                        
SHEET    2   K 4 ILE B 144  ILE B 150 -1  N  TRP B 148   O  ARG B 155           
SHEET    3   K 4 SER B 191  HIS B 198 -1  O  THR B 197   N  ASN B 145           
SHEET    4   K 4 ILE B 205  ASN B 210 -1  O  ILE B 205   N  ALA B 196           
SSBOND   1 CYS A   22    CYS A   96                          1555   1555  2.29  
SSBOND   2 CYS A  145    CYS A  200                          1555   1555  2.04  
SSBOND   3 CYS B   23    CYS B   88                          1555   1555  2.06  
SSBOND   4 CYS B  134    CYS B  194                          1555   1555  2.03  
LINK         O   GLY C  77                NA    NA C 125     1555   1555  2.51  
LINK         O   GLY C  77                NA    NA C 125     3645   1555  2.51  
LINK         O   GLY C  77                NA    NA C 125     2755   1555  2.51  
LINK         O   GLY C  77                NA    NA C 125     4665   1555  2.51  
CISPEP   1 PHE A  151    PRO A  152          0         0.04                     
CISPEP   2 GLU A  153    PRO A  154          0         0.19                     
CISPEP   3 TRP A  193    PRO A  194          0        -0.23                     
CISPEP   4 SER B    7    PRO B    8          0         0.09                     
CISPEP   5 TRP B   94    PRO B   95          0        -0.22                     
CISPEP   6 TYR B  140    PRO B  141          0        -0.13                     
SITE     1 AC1  1 GLY C  77                                                     
SITE     1 AC2  1 THR C  75                                                     
CRYST1  155.501  155.501   75.820  90.00  90.00  90.00 I 4           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      0.006431  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006431  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013189        0.00000