HEADER    MEMBRANE PROTEIN                        11-JUL-11   3STZ              
TITLE     KCSA POTASSIUM CHANNEL MUTANT Y82C WITH NITROXIDE SPIN LABEL          
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 ENGINEERED: YES;                                                     
COMPND  11 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: MUS MUSCULUS;                                   
SOURCE   3 ORGANISM_TAXID: 10090;                                               
SOURCE   4 MOL_ID: 2;                                                           
SOURCE   5 ORGANISM_SCIENTIFIC: MUS MUSCULUS;                                   
SOURCE   6 ORGANISM_TAXID: 10090;                                               
SOURCE   7 MOL_ID: 3;                                                           
SOURCE   8 ORGANISM_SCIENTIFIC: STREPTOMYCES LIVIDANS;                          
SOURCE   9 ORGANISM_TAXID: 1916;                                                
SOURCE  10 GENE: KCSA, SKC1;                                                    
SOURCE  11 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  12 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  13 EXPRESSION_SYSTEM_STRAIN: XL10 GOLD;                                 
SOURCE  14 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  15 EXPRESSION_SYSTEM_PLASMID: PQE32                                     
KEYWDS    TRANSMEMBRANE PROTEIN, ION CHANNEL, KCSA POTASSIUM CHANNEL,           
KEYWDS   2 INACTIVATION, SPIN-LABEL, MEMBRANE PROTEIN                           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.RAGHURAMAN,J.CORDERO-MORALES,V.JOGINI,E.PEROZO                      
REVDAT   3   20-NOV-24 3STZ    1       REMARK SEQADV LINK                       
REVDAT   2   03-OCT-12 3STZ    1       JRNL                                     
REVDAT   1   18-APR-12 3STZ    0                                                
JRNL        AUTH   H.RAGHURAMAN,J.F.CORDERO-MORALES,V.JOGINI,A.C.PAN,A.KOLLEWE, 
JRNL        AUTH 2 B.ROUX,E.PEROZO                                              
JRNL        TITL   MECHANISM OF CD(2+) COORDINATION DURING SLOW INACTIVATION IN 
JRNL        TITL 2 POTASSIUM CHANNELS.                                          
JRNL        REF    STRUCTURE                     V.  20  1332 2012              
JRNL        REFN                   ISSN 0969-2126                               
JRNL        PMID   22771214                                                     
JRNL        DOI    10.1016/J.STR.2012.03.027                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 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) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 40.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 29442                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.246                           
REMARK   3   FREE R VALUE                     : 0.285                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 2882                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4053                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 17                                      
REMARK   3   SOLVENT ATOMS            : 4                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 3STZ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 19-JUL-11.                  
REMARK 100 THE DEPOSITION ID IS D_1000066648.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 12-DEC-08                          
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
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                       : 24-ID-E                            
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0                                
REMARK 200  MONOCHROMATOR                  : SI(220)                            
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 29442                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 40.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 92.9                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 69.24                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.00                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 20-25% PEG400, 50MM MAGNESIUM ACETATE,   
REMARK 280  50MM SODIUM ACETATE, PH 5.5, VAPOR DIFFUSION, SITTING DROP,         
REMARK 280  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       77.86600            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       77.86600            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       38.04900            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       77.86600            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       77.86600            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       38.04900            
REMARK 290   SMTRY1   7  0.000000 -1.000000  0.000000       77.86600            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000       77.86600            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       38.04900            
REMARK 290   SMTRY1   8  0.000000  1.000000  0.000000       77.86600            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000       77.86600            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       38.04900            
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: 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      311.46400            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000      311.46400            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000 -1.000000  0.000000      311.46400            
REMARK 350   BIOMT2   3  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   4 -1.000000  0.000000  0.000000      311.46400            
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 K      K C 202  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C 203  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C 204  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C 205  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C 206  LIES ON A SPECIAL POSITION.                          
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     ARG C 117    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     HIS C 124    CG   ND1  CD2  CE1  NE2                             
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
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,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
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   ATM2   ATM3                                     
REMARK 500    CYS A  22   CA  -  CB  -  SG  ANGL. DEV. =   6.6 DEGREES          
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    VAL A   2      104.77    -38.30                                   
REMARK 500    ALA A  92      178.81    176.78                                   
REMARK 500    ARG A 100       32.92    -88.10                                   
REMARK 500    ALA A 119     -173.42    -61.86                                   
REMARK 500    ASN A 138     -121.44   -105.13                                   
REMARK 500    PHE A 151      139.77   -172.84                                   
REMARK 500    PRO A 154     -169.42   -109.20                                   
REMARK 500    SER A 177       72.77     62.40                                   
REMARK 500    LYS A 213      104.87   -171.35                                   
REMARK 500    PRO B  15      131.38    -37.28                                   
REMARK 500    ASN B  41      -11.26     76.00                                   
REMARK 500    ALA B  51      -35.39     62.05                                   
REMARK 500    PRO B  59      129.97    -36.10                                   
REMARK 500    SER B  67      148.36   -175.11                                   
REMARK 500    SER B  77       80.98     68.81                                   
REMARK 500    SER B  80      -35.09    -30.79                                   
REMARK 500    ALA B  84     -169.95   -177.30                                   
REMARK 500    THR B 126        1.91    -58.37                                   
REMARK 500    ALA B 130      118.61   -162.36                                   
REMARK 500    PRO B 141      179.44    -54.58                                   
REMARK 500    ASN B 190      -65.76   -109.46                                   
REMARK 500    LYS B 199      -32.66    -37.31                                   
REMARK 500    PHE B 209      149.99   -170.87                                   
REMARK 500    ARG B 211       -5.89    -55.39                                   
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                               K C 202   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 THR C  75   O                                                      
REMARK 620 2 THR C  75   OG1  59.5                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C 203   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 THR C  75   O                                                      
REMARK 620 2 VAL C  76   O    69.6                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C 204   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 VAL C  76   O                                                      
REMARK 620 2 GLY C  77   O    66.4                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C 206   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH C 303   O                                                      
REMARK 620 2 HOH C 304   O    82.0                                              
REMARK 620 N                    1                                               
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTN C 201                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K C 202                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K C 203                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K C 204                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K C 205                   
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 3STL   RELATED DB: PDB                                   
DBREF  3STZ C   23   124  UNP    P0A334   KCSA_STRLI      23    124             
DBREF  3STZ A    1   219  PDB    3STZ     3STZ             1    219             
DBREF  3STZ B    1   212  PDB    3STZ     3STZ             1    212             
SEQADV 3STZ CYS C   82  UNP  P0A334    TYR    82 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  102  ALA LEU HIS TRP ARG ALA ALA GLY ALA ALA THR VAL LEU          
SEQRES   2 C  102  LEU VAL ILE VAL LEU LEU ALA GLY SER TYR LEU ALA VAL          
SEQRES   3 C  102  LEU ALA GLU ARG GLY ALA PRO GLY ALA GLN LEU ILE THR          
SEQRES   4 C  102  TYR PRO ARG ALA LEU TRP TRP SER VAL GLU THR ALA THR          
SEQRES   5 C  102  THR VAL GLY TYR GLY ASP LEU CYS PRO VAL THR LEU TRP          
SEQRES   6 C  102  GLY ARG LEU VAL ALA VAL VAL VAL MET VAL ALA GLY ILE          
SEQRES   7 C  102  THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA THR TRP          
SEQRES   8 C  102  PHE VAL GLY ARG GLU GLN GLU ARG ARG GLY HIS                  
HET    MTN  C 201      12                                                       
HET      K  C 202       1                                                       
HET      K  C 203       1                                                       
HET      K  C 204       1                                                       
HET      K  C 205       1                                                       
HET      K  C 206       1                                                       
HETNAM     MTN S-[(1-OXYL-2,2,5,5-TETRAMETHYL-2,5-DIHYDRO-1H-PYRROL-3-          
HETNAM   2 MTN  YL)METHYL] METHANESULFONOTHIOATE                                
HETNAM       K POTASSIUM ION                                                    
HETSYN     MTN MTSL                                                             
FORMUL   4  MTN    C10 H18 N O3 S2                                              
FORMUL   5    K    5(K 1+)                                                      
FORMUL  10  HOH   *4(H2 O)                                                      
HELIX    1   1 THR A   87  SER A   91  5                                   5    
HELIX    2   2 SER A  191  TRP A  193  5                                   3    
HELIX    3   3 PRO A  205  SER A  208  5                                   4    
HELIX    4   4 GLU B   79  ILE B   83  5                                   5    
HELIX    5   5 SER B  121  THR B  126  1                                   6    
HELIX    6   6 LYS B  183  ARG B  188  1                                   6    
HELIX    7   7 ALA C   23  ARG C   52  1                                  30    
HELIX    8   8 THR C   61  THR C   74  1                                  14    
HELIX    9   9 THR C   85  ARG C  121  1                                  37    
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  MET A  81   N  LEU A  20           
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  HIS A  35   O  ALA A  97           
SHEET    5   B 6 LEU A  45  ILE A  51 -1  O  GLU A  46   N  LYS A  38           
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 TYR A 180  PRO A 189 -1  O  VAL A 186   N  LEU A 143           
SHEET    4   D 4 HIS A 169  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 TYR A 180  PRO A 189 -1  O  VAL A 186   N  LEU A 143           
SHEET    4   E 4 VAL A 174  LEU A 175 -1  N  VAL A 174   O  THR A 181           
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  VAL A 211   N  VAL A 202           
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  65   O  THR B  72           
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  VAL B  13           
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  TYR B  36   O  TYR B  87           
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  VAL B  13           
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  VAL B 133   N  PHE B 118           
SHEET    3   J 4 TYR B 173  THR B 182 -1  O  MET B 175   N  LEU B 136           
SHEET    4   J 4 VAL B 159  TRP B 163 -1  N  SER B 162   O  SER B 176           
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  GLU B 195   N  LYS B 147           
SHEET    4   K 4 SER B 201  ASN B 210 -1  O  SER B 201   N  HIS B 198           
SSBOND   1 CYS A   22    CYS A   96                          1555   1555  2.05  
SSBOND   2 CYS A  145    CYS A  200                          1555   1555  2.05  
SSBOND   3 CYS B   23    CYS B   88                          1555   1555  2.05  
SSBOND   4 CYS B  134    CYS B  194                          1555   1555  2.03  
LINK         SG  CYS C  82                 S1  MTN C 201     1555   1555  2.05  
LINK         O   THR C  75                 K     K C 202     1555   1555  3.19  
LINK         OG1 THR C  75                 K     K C 202     1555   1555  3.35  
LINK         O   THR C  75                 K     K C 203     1555   1555  3.11  
LINK         O   VAL C  76                 K     K C 203     1555   1555  3.32  
LINK         O   VAL C  76                 K     K C 204     1555   1555  3.36  
LINK         O   GLY C  77                 K     K C 204     1555   1555  3.16  
LINK         O   TYR C  78                 K     K C 205     1555   1555  3.13  
LINK         K     K C 206                 O   HOH C 303     1555   1555  3.34  
LINK         K     K C 206                 O   HOH C 304     1555   1555  3.46  
CISPEP   1 PHE A  151    PRO A  152          0        -0.28                     
CISPEP   2 GLU A  153    PRO A  154          0        -0.19                     
CISPEP   3 TRP A  193    PRO A  194          0        -0.07                     
CISPEP   4 SER B    7    PRO B    8          0         0.00                     
CISPEP   5 TRP B   94    PRO B   95          0        -0.59                     
CISPEP   6 TYR B  140    PRO B  141          0         0.03                     
SITE     1 AC1  3 GLN C  58  GLY C  79  CYS C  82                               
SITE     1 AC2  2 THR C  75    K C 203                                          
SITE     1 AC3  4 THR C  75  VAL C  76    K C 202    K C 204                    
SITE     1 AC4  4 VAL C  76  GLY C  77    K C 203    K C 205                    
SITE     1 AC5  3 GLY C  77  TYR C  78    K C 204                               
CRYST1  155.732  155.732   76.098  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      0.006421  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006421  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013141        0.00000