HEADER    METAL TRANSPORT                         29-SEP-15   5E1A              
TITLE     STRUCTURE OF KCSA WITH L24C/R117C MUTATIONS                           
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: PH-GATED POTASSIUM CHANNEL KCSA;                           
COMPND   9 CHAIN: C;                                                            
COMPND  10 FRAGMENT: UNP RESIDUES 4-124;                                        
COMPND  11 SYNONYM: STREPTOMYCES LIVIDANS K+ CHANNEL,SKC1;                      
COMPND  12 ENGINEERED: YES;                                                     
COMPND  13 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                                         
KEYWDS    KCSA, MUTATION, PROTONS, POTASSIUM CHANNELS, METAL TRANSPORT          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    V.UPADHYAY,D.M.KIM,C.M.NIMIGEAN                                       
REVDAT   6   06-NOV-24 5E1A    1       REMARK                                   
REVDAT   5   27-SEP-23 5E1A    1       LINK                                     
REVDAT   4   25-DEC-19 5E1A    1       REMARK                                   
REVDAT   3   06-SEP-17 5E1A    1       REMARK                                   
REVDAT   2   31-AUG-16 5E1A    1       JRNL                                     
REVDAT   1   13-JUL-16 5E1A    0                                                
JRNL        AUTH   D.M.KIM,I.DIKIY,V.UPADHYAY,D.J.POSSON,D.ELIEZER,C.M.NIMIGEAN 
JRNL        TITL   CONFORMATIONAL HETEROGENEITY IN CLOSED AND OPEN STATES OF    
JRNL        TITL 2 THE KCSA POTASSIUM CHANNEL IN LIPID BICELLES.                
JRNL        REF    J.GEN.PHYSIOL.                V. 148   119 2016              
JRNL        REFN                   ESSN 1540-7748                               
JRNL        PMID   27432996                                                     
JRNL        DOI    10.1085/JGP.201611602                                        
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.40 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PHENIX 1.9_1692                                      
REMARK   3   AUTHORS     : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN            
REMARK   3               : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE,           
REMARK   3               : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER,            
REMARK   3               : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY,              
REMARK   3               : REETAL PAI,RANDY READ,JANE RICHARDSON,               
REMARK   3               : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI,           
REMARK   3               : NICHOLAS SAUTER,JACOB SMITH,LAURENT                  
REMARK   3               : STORONI,TOM TERWILLIGER,PETER ZWART                  
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : ML                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.40                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 48.95                          
REMARK   3   MIN(FOBS/SIGMA_FOBS)              : 1.350                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 12261                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.248                           
REMARK   3   R VALUE            (WORKING SET) : 0.247                           
REMARK   3   FREE R VALUE                     : 0.257                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.970                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1222                            
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (IN BINS).                           
REMARK   3   BIN  RESOLUTION RANGE  COMPL.    NWORK NFREE   RWORK  RFREE        
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED        : FLAT BULK SOLVENT MODEL                       
REMARK   3   SOLVENT RADIUS     : 1.11                                          
REMARK   3   SHRINKAGE RADIUS   : 0.90                                          
REMARK   3   K_SOL              : NULL                                          
REMARK   3   B_SOL              : NULL                                          
REMARK   3                                                                      
REMARK   3  ERROR ESTIMATES.                                                    
REMARK   3   COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED)     : 0.490            
REMARK   3   PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 28.310           
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 150.2                          
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  TWINNING INFORMATION.                                               
REMARK   3   FRACTION: NULL                                                     
REMARK   3   OPERATOR: NULL                                                     
REMARK   3                                                                      
REMARK   3  DEVIATIONS FROM IDEAL VALUES.                                       
REMARK   3                 RMSD          COUNT                                  
REMARK   3   BOND      :  0.003           4155                                  
REMARK   3   ANGLE     :  0.643           5652                                  
REMARK   3   CHIRALITY :  0.023            646                                  
REMARK   3   PLANARITY :  0.003            718                                  
REMARK   3   DIHEDRAL  : 10.700           1455                                  
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 1                                          
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    SELECTION: ALL                                                    
REMARK   3    ORIGIN FOR THE GROUP (A): -28.1683  19.9209  31.9759              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   1.2825 T22:   1.3187                                     
REMARK   3      T33:   1.1343 T12:   0.5197                                     
REMARK   3      T13:   0.0319 T23:   0.1834                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   2.2535 L22:   2.3873                                     
REMARK   3      L33:   6.0215 L12:  -1.0582                                     
REMARK   3      L13:  -1.8262 L23:   2.8917                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0777 S12:  -0.1093 S13:  -0.2094                       
REMARK   3      S21:   0.3168 S22:  -0.2404 S23:   0.5020                       
REMARK   3      S31:  -0.9260 S32:  -1.5015 S33:   0.2549                       
REMARK   3                                                                      
REMARK   3  NCS DETAILS                                                         
REMARK   3   NUMBER OF NCS GROUPS : NULL                                        
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 5E1A COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-SEP-15.                  
REMARK 100 THE DEPOSITION ID IS D_1000213696.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 07-JUN-15                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.75                               
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) : 0.9792                             
REMARK 200  MONOCHROMATOR                  : LIQUID NITROGEN-COOLED DOUBLE      
REMARK 200                                   CRYSTAL, NON FIXED EXIT SLIT       
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : PSI PILATUS 6M                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XSCALE                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 12268                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 3.400                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 48.950                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.8                               
REMARK 200  DATA REDUNDANCY                : 13.26                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.15000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.1600                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.40                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.52                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 13.52                              
REMARK 200  R MERGE FOR SHELL          (I) : 3.30000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.060                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHENIX 1.9_1692                                       
REMARK 200 STARTING MODEL: PDB ENTRY 1K4C                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 66.91                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.72                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 400, MES, MAGNESIUM ACETATE, PH      
REMARK 280  6.75, 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       77.39700            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       77.39700            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       37.23950            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       77.39700            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       77.39700            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       37.23950            
REMARK 290   SMTRY1   7  0.000000 -1.000000  0.000000       77.39700            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000       77.39700            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       37.23950            
REMARK 290   SMTRY1   8  0.000000  1.000000  0.000000       77.39700            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000       77.39700            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       37.23950            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: 3580 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 19940 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -25.0 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 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 8120 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 18620 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -80.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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        0.00000            
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        0.00000            
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        0.00000            
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 C3001  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C3002  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C3003  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C3004  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 465     SER C    22                                                      
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     TRP C  26    CG   CD1  CD2  NE1  CE2  CE3  CZ2                   
REMARK 470     TRP C  26    CZ3  CH2                                            
REMARK 470     GLU C  51    CG   CD   OE1  OE2                                  
REMARK 470     HIS C 124    CG   ND1  CD2  CE1  NE2                             
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    LYS A  66       93.10    -69.09                                   
REMARK 500    ASN A 138     -134.27   -102.71                                   
REMARK 500    ALA B  51      -46.04     71.91                                   
REMARK 500    SER B  77       88.07     58.13                                   
REMARK 500    ASP B 170       18.73   -148.28                                   
REMARK 500    CYS C  24      -65.45   -125.14                                   
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 C3003   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 THR C  75   O                                                      
REMARK 620 2 THR C  75   O     0.0                                              
REMARK 620 3 VAL C  76   O    79.1  79.1                                        
REMARK 620 4 VAL C  76   O    79.1  79.1   0.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C3004   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 THR C  75   O                                                      
REMARK 620 2 THR C  75   OG1  59.0                                              
REMARK 620 3 THR C  75   O     0.0  59.0                                        
REMARK 620 4 THR C  75   OG1  59.0   0.0  59.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C3002   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 VAL C  76   O                                                      
REMARK 620 2 VAL C  76   O     0.0                                              
REMARK 620 3 GLY C  77   O    69.3  69.3                                        
REMARK 620 4 GLY C  77   O    69.3  69.3   0.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C3001   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLY C  77   O                                                      
REMARK 620 2 GLY C  77   O     0.0                                              
REMARK 620 3 TYR C  78   O    73.5  73.5                                        
REMARK 620 4 TYR C  78   O    73.5  73.5   0.0                                  
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 K C 3001                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: binding site for residue K C 3002                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: binding site for residue K C 3003                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: binding site for residue K C 3004                  
DBREF  5E1A A    1   219  PDB    5E1A     5E1A             1    219             
DBREF  5E1A B    1   212  PDB    5E1A     5E1A             1    212             
DBREF  5E1A C    4   124  UNP    P0A334   KCSA_STRLI       4    124             
SEQADV 5E1A MET C    1  UNP  P0A334              EXPRESSION TAG                 
SEQADV 5E1A ALA C    2  UNP  P0A334              EXPRESSION TAG                 
SEQADV 5E1A PRO C    3  UNP  P0A334              EXPRESSION TAG                 
SEQADV 5E1A CYS C   24  UNP  P0A334    LEU    24 ENGINEERED MUTATION            
SEQADV 5E1A CYS C  117  UNP  P0A334    ARG   117 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 CYS 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 LEU 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 CYS          
SEQRES  10 C  124  GLU GLN GLU ARG ARG GLY HIS                                  
HET      K  C3001       1                                                       
HET      K  C3002       1                                                       
HET      K  C3003       1                                                       
HET      K  C3004       1                                                       
HETNAM       K POTASSIUM ION                                                    
FORMUL   4    K    4(K 1+)                                                      
HELIX    1 AA1 THR A   87  SER A   91  5                                   5    
HELIX    2 AA2 GLU B   79  ILE B   83  5                                   5    
HELIX    3 AA3 SER B  121  SER B  127  1                                   7    
HELIX    4 AA4 LYS B  183  GLU B  187  1                                   5    
HELIX    5 AA5 CYS C   24  ARG C   52  1                                  29    
HELIX    6 AA6 THR C   61  THR C   74  1                                  14    
HELIX    7 AA7 THR C   85  ARG C  122  1                                  38    
SHEET    1 AA1 4 LEU A   4  GLN A   5  0                                        
SHEET    2 AA1 4 VAL A  18  ALA A  24 -1  O  LYS A  23   N  GLN A   5           
SHEET    3 AA1 4 THR A  78  LEU A  83 -1  O  LEU A  83   N  VAL A  18           
SHEET    4 AA1 4 ALA A  68  ASP A  73 -1  N  ASP A  73   O  THR A  78           
SHEET    1 AA2 6 ALA A   9  VAL A  12  0                                        
SHEET    2 AA2 6 THR A 112  VAL A 116  1  O  THR A 113   N  GLU A  10           
SHEET    3 AA2 6 ALA A  92  GLU A  99 -1  N  ALA A  92   O  VAL A 114           
SHEET    4 AA2 6 TRP A  33  GLN A  39 -1  N  HIS A  35   O  ALA A  97           
SHEET    5 AA2 6 GLU A  46  ILE A  51 -1  O  GLU A  46   N  LYS A  38           
SHEET    6 AA2 6 ALA A  58  TYR A  60 -1  O  ASN A  59   N  GLU A  50           
SHEET    1 AA3 4 ALA A   9  VAL A  12  0                                        
SHEET    2 AA3 4 THR A 112  VAL A 116  1  O  THR A 113   N  GLU A  10           
SHEET    3 AA3 4 ALA A  92  GLU A  99 -1  N  ALA A  92   O  VAL A 114           
SHEET    4 AA3 4 PHE A 105  TRP A 108 -1  O  VAL A 107   N  ARG A  98           
SHEET    1 AA4 4 SER A 125  LEU A 129  0                                        
SHEET    2 AA4 4 MET A 140  TYR A 150 -1  O  LEU A 146   N  TYR A 127           
SHEET    3 AA4 4 LEU A 179  PRO A 189 -1  O  VAL A 188   N  VAL A 141           
SHEET    4 AA4 4 VAL A 168  THR A 170 -1  N  HIS A 169   O  SER A 185           
SHEET    1 AA5 4 SER A 125  LEU A 129  0                                        
SHEET    2 AA5 4 MET A 140  TYR A 150 -1  O  LEU A 146   N  TYR A 127           
SHEET    3 AA5 4 LEU A 179  PRO A 189 -1  O  VAL A 188   N  VAL A 141           
SHEET    4 AA5 4 VAL A 174  GLN A 176 -1  N  GLN A 176   O  LEU A 179           
SHEET    1 AA6 3 THR A 156  TRP A 159  0                                        
SHEET    2 AA6 3 THR A 199  HIS A 204 -1  O  ASN A 201   N  THR A 158           
SHEET    3 AA6 3 THR A 209  LYS A 214 -1  O  THR A 209   N  HIS A 204           
SHEET    1 AA7 4 LEU B   4  THR B   5  0                                        
SHEET    2 AA7 4 VAL B  19  ALA B  25 -1  O  ARG B  24   N  THR B   5           
SHEET    3 AA7 4 ASP B  70  ILE B  75 -1  O  LEU B  73   N  PHE B  21           
SHEET    4 AA7 4 PHE B  62  SER B  67 -1  N  SER B  65   O  THR B  72           
SHEET    1 AA8 6 ILE B  10  VAL B  13  0                                        
SHEET    2 AA8 6 THR B 102  ILE B 106  1  O  GLU B 105   N  LEU B  11           
SHEET    3 AA8 6 ASN B  85  GLN B  90 -1  N  TYR B  86   O  THR B 102           
SHEET    4 AA8 6 ILE B  33  GLN B  38 -1  N  TYR B  36   O  TYR B  87           
SHEET    5 AA8 6 ARG B  45  LYS B  49 -1  O  ARG B  45   N  GLN B  37           
SHEET    6 AA8 6 GLU B  53  SER B  54 -1  O  GLU B  53   N  LYS B  49           
SHEET    1 AA9 4 ILE B  10  VAL B  13  0                                        
SHEET    2 AA9 4 THR B 102  ILE B 106  1  O  GLU B 105   N  LEU B  11           
SHEET    3 AA9 4 ASN B  85  GLN B  90 -1  N  TYR B  86   O  THR B 102           
SHEET    4 AA9 4 THR B  97  PHE B  98 -1  O  THR B  97   N  GLN B  90           
SHEET    1 AB1 4 THR B 114  PHE B 118  0                                        
SHEET    2 AB1 4 GLY B 129  PHE B 139 -1  O  ASN B 137   N  THR B 114           
SHEET    3 AB1 4 TYR B 173  THR B 182 -1  O  MET B 175   N  LEU B 136           
SHEET    4 AB1 4 VAL B 159  TRP B 163 -1  N  LEU B 160   O  THR B 178           
SHEET    1 AB2 4 SER B 153  ARG B 155  0                                        
SHEET    2 AB2 4 ASN B 145  ILE B 150 -1  N  ILE B 150   O  SER B 153           
SHEET    3 AB2 4 SER B 191  THR B 197 -1  O  THR B 197   N  ASN B 145           
SHEET    4 AB2 4 ILE B 205  ASN B 210 -1  O  PHE B 209   N  TYR B 192           
SSBOND   1 CYS A   22    CYS A   96                          1555   1555  2.03  
SSBOND   2 CYS A  145    CYS A  200                          1555   1555  2.04  
SSBOND   3 CYS B   23    CYS B   88                          1555   1555  2.04  
SSBOND   4 CYS B  134    CYS B  194                          1555   1555  2.03  
SSBOND   5 CYS C   24    CYS C  117                          1555   3555  2.02  
LINK         O   THR C  75                 K     K C3003     1555   1555  2.81  
LINK         O   THR C  75                 K     K C3003     1555   3555  2.87  
LINK         O   THR C  75                 K     K C3004     1555   1555  2.80  
LINK         OG1 THR C  75                 K     K C3004     1555   1555  2.83  
LINK         O   THR C  75                 K     K C3004     1555   4555  2.90  
LINK         OG1 THR C  75                 K     K C3004     1555   3555  2.96  
LINK         O   VAL C  76                 K     K C3002     1555   1555  2.73  
LINK         O   VAL C  76                 K     K C3002     1555   4555  2.76  
LINK         O   VAL C  76                 K     K C3003     1555   1555  2.88  
LINK         O   VAL C  76                 K     K C3003     1555   4555  2.92  
LINK         O   GLY C  77                 K     K C3001     1555   1555  2.84  
LINK         O   GLY C  77                 K     K C3001     1555   3555  2.88  
LINK         O   GLY C  77                 K     K C3002     1555   1555  2.78  
LINK         O   GLY C  77                 K     K C3002     1555   3555  2.82  
LINK         O   TYR C  78                 K     K C3001     1555   1555  2.72  
LINK         O   TYR C  78                 K     K C3001     1555   4555  2.82  
CISPEP   1 PHE A  151    PRO A  152          0        -1.56                     
CISPEP   2 GLU A  153    PRO A  154          0        -3.91                     
CISPEP   3 TRP A  193    PRO A  194          0         0.40                     
CISPEP   4 SER B    7    PRO B    8          0        -0.38                     
CISPEP   5 TRP B   94    PRO B   95          0        -0.45                     
CISPEP   6 TYR B  140    PRO B  141          0         2.66                     
SITE     1 AC1  3 GLY C  77  TYR C  78    K C3002                               
SITE     1 AC2  4 VAL C  76  GLY C  77    K C3001    K C3003                    
SITE     1 AC3  4 THR C  75  VAL C  76    K C3002    K C3004                    
SITE     1 AC4  2 THR C  75    K C3003                                          
CRYST1  154.794  154.794   74.479  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      0.006460  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006460  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013427        0.00000