PDB Short entry for 1K4D
HEADER    MEMBRANE PROTEIN                        07-OCT-01   1K4D              
TITLE     POTASSIUM CHANNEL KCSA-FAB COMPLEX IN LOW CONCENTRATION OF K+         
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: POTASSIUM CHANNEL KCSA;                                    
COMPND   9 CHAIN: C;                                                            
COMPND  10 FRAGMENT: POTASSIUM CHANNEL KCSA;                                    
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 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  13 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    K CHANNEL, PROTEIN-ANTIBODY FAB COMPLEX, MEMBRANE PROTEIN             
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Y.ZHOU,J.H.MORAIS-CABRAL,A.KAUFMAN,R.MACKINNON                        
REVDAT   4   27-OCT-21 1K4D    1       REMARK SEQADV LINK                       
REVDAT   3   16-NOV-11 1K4D    1       VERSN  HETATM                            
REVDAT   2   24-FEB-09 1K4D    1       VERSN                                    
REVDAT   1   14-NOV-01 1K4D    0                                                
JRNL        AUTH   Y.ZHOU,J.H.MORAIS-CABRAL,A.KAUFMAN,R.MACKINNON               
JRNL        TITL   CHEMISTRY OF ION COORDINATION AND HYDRATION REVEALED BY A K+ 
JRNL        TITL 2 CHANNEL-FAB COMPLEX AT 2.0 A RESOLUTION.                     
JRNL        REF    NATURE                        V. 414    43 2001              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   11689936                                                     
JRNL        DOI    10.1038/35102009                                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.30 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 0.3                                              
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) : 2.30                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 2159462.430                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 39850                          
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) : 0.218                           
REMARK   3   FREE R VALUE                     : 0.235                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 3944                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.001                           
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            : 3993                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 44                                      
REMARK   3   SOLVENT ATOMS            : 266                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 49.20                          
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) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.400                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 24.60                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.730                           
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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : K_NA_CNS.PAR                                   
REMARK   3  PARAMETER FILE  3  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : K_NA_TOP.TXT                                   
REMARK   3  TOPOLOGY FILE  3   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1K4D COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK  99                                                                      
REMARK  99 THE WATER MOLECULES 1, 2, 3, 4, 5, 6, 7 AND 267 ARE                  
REMARK  99 NEAR THE POTASSIUM ION PATHWAY INSIDE MOLECULE KCSA.                 
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 31-OCT-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000014545.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 25-APR-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 200                                
REMARK 200  PH                             : 5.4                                
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          : BRANDEIS - B4                      
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 39850                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.300                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.2                               
REMARK 200  DATA REDUNDANCY                : 4.200                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.05600                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 24.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.30                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.38                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 95.3                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.70                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.37000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 67.63                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.80                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 400,MAGNESIUM ACETATE, SODIUM        
REMARK 280  ACETATE , PH 5.4, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K   
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       77.64500            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       77.64500            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       37.87000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       77.64500            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       77.64500            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       37.87000            
REMARK 290   SMTRY1   7  0.000000 -1.000000  0.000000       77.64500            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000       77.64500            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       37.87000            
REMARK 290   SMTRY1   8  0.000000  1.000000  0.000000       77.64500            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000       77.64500            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       37.87000            
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      310.58000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000      310.58000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000 -1.000000  0.000000      310.58000            
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      310.58000            
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 C2001  LIES ON A SPECIAL POSITION.                          
REMARK 375 K      K C2002  LIES ON A SPECIAL POSITION.                          
REMARK 375 NA    NA C2003  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH C2004  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH C2005  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH C2043  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH C2044  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 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     LYS A  23    CG   CD   CE   NZ                                   
REMARK 470     LYS A  63    CG   CD   CE   NZ                                   
REMARK 470     GLN A  65    CG   CD   OE1  NE2                                  
REMARK 470     LYS A  74    CG   CD   CE   NZ                                   
REMARK 470     GLU A  89    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 120    CG   CD   CE   NZ                                   
REMARK 470     SER A 133    OG                                                  
REMARK 470     GLN A 136    CG   CD   OE1  NE2                                  
REMARK 470     THR A 137    OG1  CG2                                            
REMARK 470     ASN A 138    CG   OD1  ND2                                       
REMARK 470     SER A 165    OG                                                  
REMARK 470     SER A 166    OG                                                  
REMARK 470     SER A 177    OG                                                  
REMARK 470     ASP A 178    CG   OD1  OD2                                       
REMARK 470     LYS A 213    CG   CD   CE   NZ                                   
REMARK 470     ASP A 219    CG   OD1  OD2                                       
REMARK 470     ARG B  24    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     LYS B 142    CG   CD   CE   NZ                                   
REMARK 470     ASN B 190    CG   OD1  ND2                                       
REMARK 470     ASN B 212    CG   OD1  ND2                                       
REMARK 470     SER C  22    OG                                                  
REMARK 470     ARG C  27    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     ARG C 122    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: 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    TYR A  55      -22.91   -142.45                                   
REMARK 500    SER A  77       53.50     38.13                                   
REMARK 500    ALA A  92     -178.39   -177.53                                   
REMARK 500    ASN A 138     -152.65    -91.81                                   
REMARK 500    PHE A 151      138.00   -170.97                                   
REMARK 500    ALA B  51      -35.25     68.55                                   
REMARK 500    SER B  77       72.62     53.02                                   
REMARK 500    ALA B  84     -174.56    175.61                                   
REMARK 500    ASN B 190      -71.62    -88.21                                   
REMARK 500    LYS B 199      -32.13    -39.35                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 610                                                                      
REMARK 610 MISSING HETEROATOM                                                   
REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 610 I=INSERTION CODE):                                                   
REMARK 610   M RES C SSEQI                                                      
REMARK 610     DGA C 1001                                                       
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 C2002   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 THR C  75   O                                                      
REMARK 620 2 THR C  75   OG1  53.3                                              
REMARK 620 3 THR C  75   OG1 118.2  81.8                                        
REMARK 620 4 THR C  75   OG1  82.4  82.5 136.4                                  
REMARK 620 5 THR C  75   O    78.7 119.2 158.9  53.5                            
REMARK 620 6 THR C  75   O    78.1  81.7  52.7 159.9 126.2                      
REMARK 620 7 THR C  75   OG1 160.2 136.4  81.6  82.3  82.0 117.8                
REMARK 620 8 THR C  75   O   126.2 158.7  81.3 118.8  78.3  77.7  52.9          
REMARK 620 9 HOH C2004   O    63.1 111.6 110.7 112.9  63.9  62.3 112.0  63.1    
REMARK 620 N                    1     2     3     4     5     6     7     8     
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C2001   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLY C  77   O                                                      
REMARK 620 2 GLY C  77   O    70.7                                              
REMARK 620 3 GLY C  77   O    71.2 110.1                                        
REMARK 620 4 GLY C  77   O   110.1  70.4  71.0                                  
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 2001                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K C 2002                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DGA C 1001                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE F09 C 1002                
DBREF  1K4D C    1   124  UNP    P0A334   KCSA_STRLI       1    124             
DBREF  1K4D A    1   219  PDB    1K4D     1K4D             1    219             
DBREF  1K4D B    1   212  PDB    1K4D     1K4D             1    212             
SEQADV 1K4D ALA C    2  UNP  P0A334    PRO     2 ENGINEERED MUTATION            
SEQADV 1K4D 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      K  C2001       1                                                       
HET      K  C2002       1                                                       
HET     NA  C2003       1                                                       
HET    DGA  C1001      31                                                       
HET    F09  C1002      10                                                       
HETNAM       K POTASSIUM ION                                                    
HETNAM      NA SODIUM ION                                                       
HETNAM     DGA DIACYL GLYCEROL                                                  
HETNAM     F09 NONAN-1-OL                                                       
FORMUL   4    K    2(K 1+)                                                      
FORMUL   6   NA    NA 1+                                                        
FORMUL   7  DGA    C39 H76 O5                                                   
FORMUL   8  F09    C9 H20 O                                                     
FORMUL   9  HOH   *266(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   75  1                                  15    
SHEET    1   A 4 LEU A   4  GLN A   5  0                                        
SHEET    2   A 4 VAL A  18  ALA A  24 -1                                        
SHEET    3   A 4 THR A  78  LEU A  83 -1  O  LEU A  83   N  VAL A  18           
SHEET    4   A 4 ALA A  68  ASP A  73 -1  N  THR A  69   O  GLN A  82           
SHEET    1   B 5 ALA A  58  TYR A  60  0                                        
SHEET    2   B 5 GLU A  46  ILE A  51 -1  N  GLU A  50   O  ASN A  59           
SHEET    3   B 5 TRP A  33  GLN A  39 -1  N  LYS A  38   O  GLU A  46           
SHEET    4   B 5 ALA A  92  GLU A  99 -1  O  TYR A  95   N  VAL A  37           
SHEET    5   B 5 PHE A 105  TRP A 108 -1  O  VAL A 107   N  ARG A  98           
SHEET    1   C 6 ALA A  58  TYR A  60  0                                        
SHEET    2   C 6 GLU A  46  ILE A  51 -1  N  GLU A  50   O  ASN A  59           
SHEET    3   C 6 TRP A  33  GLN A  39 -1  N  LYS A  38   O  GLU A  46           
SHEET    4   C 6 ALA A  92  GLU A  99 -1  O  TYR A  95   N  VAL A  37           
SHEET    5   C 6 THR A 112  VAL A 116 -1  O  VAL A 114   N  ALA A  92           
SHEET    6   C 6 ALA A   9  VAL A  12  1  N  VAL A  12   O  THR A 115           
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  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 TYR A 180  PRO A 189 -1  O  TYR A 180   N  TYR A 150           
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  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                                        
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 5 GLU B  53  SER B  54  0                                        
SHEET    2   H 5 ARG B  45  LYS B  49 -1  N  LYS B  49   O  GLU B  53           
SHEET    3   H 5 ILE B  33  GLN B  38 -1  N  TRP B  35   O  LEU B  47           
SHEET    4   H 5 ASN B  85  GLN B  90 -1  O  TYR B  87   N  TYR B  36           
SHEET    5   H 5 THR B  97  PHE B  98 -1  O  THR B  97   N  GLN B  90           
SHEET    1   I 6 GLU B  53  SER B  54  0                                        
SHEET    2   I 6 ARG B  45  LYS B  49 -1  N  LYS B  49   O  GLU B  53           
SHEET    3   I 6 ILE B  33  GLN B  38 -1  N  TRP B  35   O  LEU B  47           
SHEET    4   I 6 ASN B  85  GLN B  90 -1  O  TYR B  87   N  TYR B  36           
SHEET    5   I 6 THR B 102  ILE B 106 -1  O  THR B 102   N  TYR B  86           
SHEET    6   I 6 ILE B  10  VAL B  13  1  N  LEU B  11   O  GLU B 105           
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  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 ASN B 145  ILE B 150 -1  N  ILE B 150   O  SER B 153           
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  ILE B 205   N  ALA B 196           
SSBOND   1 CYS A   22    CYS A   96                          1555   1555  2.67  
SSBOND   2 CYS A  145    CYS A  200                          1555   1555  2.98  
SSBOND   3 CYS B   23    CYS B   88                          1555   1555  2.67  
SSBOND   4 CYS B  134    CYS B  194                          1555   1555  2.70  
LINK         O   THR C  75                 K     K C2002     1555   1555  2.90  
LINK         OG1 THR C  75                 K     K C2002     1555   1555  3.03  
LINK         OG1 THR C  75                 K     K C2002     3755   1555  3.05  
LINK         OG1 THR C  75                 K     K C2002     4575   1555  3.01  
LINK         O   THR C  75                 K     K C2002     4575   1555  2.90  
LINK         O   THR C  75                 K     K C2002     3755   1555  2.93  
LINK         OG1 THR C  75                 K     K C2002     2775   1555  3.04  
LINK         O   THR C  75                 K     K C2002     2775   1555  2.93  
LINK         O   GLY C  77                 K     K C2001     1555   1555  2.79  
LINK         O   GLY C  77                 K     K C2001     3755   1555  2.81  
LINK         O   GLY C  77                 K     K C2001     4575   1555  2.78  
LINK         O   GLY C  77                 K     K C2001     2775   1555  2.81  
LINK         K     K C2002                 O   HOH C2004     1555   1555  3.34  
LINK         K     K C2002                 O   HOH C2004     1555   2775  3.34  
LINK         K     K C2002                 O   HOH C2004     1555   3755  3.34  
LINK         K     K C2002                 O   HOH C2004     1555   4575  3.34  
LINK         K     K C2002                 O   HOH C2043     1555   1555  3.33  
LINK         K     K C2002                 O   HOH C2043     1555   2775  3.33  
LINK         K     K C2002                 O   HOH C2043     1555   3755  3.33  
LINK         K     K C2002                 O   HOH C2043     1555   4575  3.33  
CISPEP   1 PHE A  151    PRO A  152          0        -0.55                     
CISPEP   2 GLU A  153    PRO A  154          0        -0.73                     
CISPEP   3 TRP A  193    PRO A  194          0        -0.03                     
CISPEP   4 SER B    7    PRO B    8          0         0.17                     
CISPEP   5 TRP B   94    PRO B   95          0        -0.27                     
CISPEP   6 TYR B  140    PRO B  141          0        -0.20                     
SITE     1 AC1  1 GLY C  77                                                     
SITE     1 AC2  1 THR C  75                                                     
SITE     1 AC3  5 GLU B  53  TYR C  45  PRO C  63  LEU C  86                    
SITE     2 AC3  5 ARG C  89                                                     
SITE     1 AC4  2 VAL C  91  VAL C  94                                          
CRYST1  155.290  155.290   75.740  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      0.006440  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006440  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013203        0.00000