PDB Short entry for 1G4Y
HEADER    SIGNALING PROTEIN                       07-JAN-01   1G4Y              
TITLE     1.60 A CRYSTAL STRUCTURE OF THE GATING DOMAIN FROM SMALL CONDUCTANCE  
TITLE    2 POTASSIUM CHANNEL COMPLEXED WITH CALCIUM-CALMODULIN                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CALCIUM-ACTIVATED POTASSIUM CHANNEL RSK2;                  
COMPND   3 CHAIN: B;                                                            
COMPND   4 FRAGMENT: CALMODULIN-BINDING DOMAIN;                                 
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MOL_ID: 2;                                                           
COMPND   7 MOLECULE: CALMODULIN;                                                
COMPND   8 CHAIN: R;                                                            
COMPND   9 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS;                              
SOURCE   3 ORGANISM_COMMON: NORWAY RAT;                                         
SOURCE   4 ORGANISM_TAXID: 10116;                                               
SOURCE   5 GENE: RAT;                                                           
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET23B;                                   
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS;                              
SOURCE  13 ORGANISM_COMMON: NORWAY RAT;                                         
SOURCE  14 ORGANISM_TAXID: 10116;                                               
SOURCE  15 GENE: RAT;                                                           
SOURCE  16 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE  17 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE  18 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE  19 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  20 EXPRESSION_SYSTEM_PLASMID: PET33B                                    
KEYWDS    SMALL-CONDUCTANCE CALCIUM-ACTIVATED POTASSIUM CHANNEL, CALMODULIN,    
KEYWDS   2 CALMODULIN BINDING DOMAIN (CAMBD), CHANNEL GATING, SIGNALING PROTEIN 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.A.SCHUMACHER,A.RIVARD,H.P.BACHINGER,J.P.ADELMAN                     
REVDAT   5   16-NOV-11 1G4Y    1       HETATM                                   
REVDAT   4   13-JUL-11 1G4Y    1       VERSN                                    
REVDAT   3   24-FEB-09 1G4Y    1       VERSN                                    
REVDAT   2   01-APR-03 1G4Y    1       JRNL                                     
REVDAT   1   09-MAY-01 1G4Y    0                                                
JRNL        AUTH   M.A.SCHUMACHER,A.F.RIVARD,H.P.BACHINGER,J.P.ADELMAN          
JRNL        TITL   STRUCTURE OF THE GATING DOMAIN OF A CA2+-ACTIVATED K+        
JRNL        TITL 2 CHANNEL COMPLEXED WITH CA2+/CALMODULIN.                      
JRNL        REF    NATURE                        V. 410  1120 2001              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   11323678                                                     
JRNL        DOI    10.1038/35074145                                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH AND HUBER                                  
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 40.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 93.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 40687                          
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) : 0.221                           
REMARK   3   FREE R VALUE                     : 0.251                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 4091                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1838                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 7                                       
REMARK   3   SOLVENT ATOMS            : 199                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 36.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 4.00                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.00000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.00000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.02                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.23                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 6.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.02                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.26                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.014                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.57                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : ISOTROPIC                                 
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1G4Y COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-JAN-01.                  
REMARK 100 THE RCSB ID CODE IS RCSB012605.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-DEC-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 110                                
REMARK 200  PH                             : 5.6                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL9-2                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.08                               
REMARK 200  MONOCHROMATOR                  : DOUBLE-CRYSTAL SI 111 CRYSTALS     
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : CCP4 (SCALA)                       
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 40694                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 40.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 94.1                               
REMARK 200  DATA REDUNDANCY                : 2.800                              
REMARK 200  R MERGE                    (I) : 0.06000                            
REMARK 200  R SYM                      (I) : 5.00000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.2000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.64                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 87.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.30                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.32000                            
REMARK 200  R SYM FOR SHELL            (I) : 28.90000                           
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR                          
REMARK 200 SOFTWARE USED: PHASES                                                
REMARK 200 STARTING MODEL: ROOM TEMP MODEL                                      
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 57.57                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULPHATE, LITHIUM SULPHATE,     
REMARK 280  CITRATE, PH 5.6, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                          
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   X+1/2,Y+1/2,Z                                           
REMARK 290       4555   -X+1/2,Y+1/2,-Z                                         
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  1.000000  0.000000  0.000000       38.82500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       33.34500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       38.82500            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       33.34500            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: THE RELEVANT DIMER IS GENERATED BY CRYSTALLOGRAPHIC          
REMARK 300 SYMMETRY.                                                            
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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 12340 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 23100 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -127.0 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, R                                  
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       73.47540            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       64.55516            
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      HOH B 818  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH B 806  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 B   394                                                      
REMARK 465     GLY B   395                                                      
REMARK 465     ARG B   396                                                      
REMARK 465     LYS B   397                                                      
REMARK 465     LEU B   398                                                      
REMARK 465     GLU B   399                                                      
REMARK 465     LEU B   400                                                      
REMARK 465     THR B   401                                                      
REMARK 465     LYS B   402                                                      
REMARK 465     ALA B   403                                                      
REMARK 465     GLU B   404                                                      
REMARK 465     LYS B   405                                                      
REMARK 465     HIS B   406                                                      
REMARK 465     VAL B   407                                                      
REMARK 465     HIS B   408                                                      
REMARK 465     ASN B   409                                                      
REMARK 465     PHE B   410                                                      
REMARK 465     MET B   411                                                      
REMARK 465     MET B   412                                                      
REMARK 465     GLU B   489                                                      
REMARK 465     LYS R   148                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    HOH R  1047     O    HOH R  1135              0.00            
REMARK 500   O    HOH B   809     O    HOH B   815              2.12            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH B   846     O    HOH B   846     2656     2.15            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    HIS B 494   N   -  CA  -  C   ANGL. DEV. =  18.2 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    LYS B 439      -24.54   -145.66                                   
REMARK 500    ASP R   2       72.96   -118.52                                   
REMARK 500    GLN R   3      -12.29     64.94                                   
REMARK 500    ALA R  57      -75.49    -63.17                                   
REMARK 500    LYS R  75       49.93   -153.23                                   
REMARK 500    LYS R 115      155.41     77.94                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CHIRAL CENTERS                                             
REMARK 500                                                                      
REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL                     
REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY                      
REMARK 500 FOR AMINO ACIDS AND C1'--O4'--N1(N9)--C2' FOR                        
REMARK 500 NUCLEIC ACIDS OR EQUIVALENT ANGLE                                    
REMARK 500 M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN                            
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE                   
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,6X,F5.1,6X,A1,10X,A1,3X,A16)       
REMARK 500                                                                      
REMARK 500  M RES CSSEQI    IMPROPER   EXPECTED   FOUND DETAILS                 
REMARK 500    HIS B 494        21.4      L          L   OUTSIDE RANGE           
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH B 826        DISTANCE =  5.57 ANGSTROMS                       
REMARK 525    HOH R1013        DISTANCE =  5.53 ANGSTROMS                       
REMARK 525    HOH R1035        DISTANCE =  8.15 ANGSTROMS                       
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                              CA R1001  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU R  31   OE2                                                    
REMARK 620 2 ASP R  22   OD1  77.4                                              
REMARK 620 3 ASP R  22   OD2  76.9  40.5                                        
REMARK 620 4 GLU R  31   OE1  51.9 129.1 118.0                                  
REMARK 620 5 ASP R  20   OD1  98.6  70.9 111.1 109.0                            
REMARK 620 6 HOH R1024   O    87.2 105.0  64.4  79.1 171.8                      
REMARK 620 7 ASP R  24   OD1 156.6  80.2  81.7 150.6  80.3  92.1                
REMARK 620 8 THR R  26   O   131.1 146.4 146.4  80.5  85.5  95.1  72.3          
REMARK 620 N                    1     2     3     4     5     6     7           
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA R1002  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 THR R  62   O                                                      
REMARK 620 2 ASP R  58   OD2 132.3                                              
REMARK 620 3 ASN R  60   OD1  65.6  78.1                                        
REMARK 620 4 GLU R  67   OE1  70.4 101.1 115.3                                  
REMARK 620 5 GLU R  67   OE2 111.8  88.7 155.5  46.7                            
REMARK 620 6 ASP R  56   OD1  96.5 116.1  93.2 137.3 111.2                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA R 1001                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA R 1002                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 799                 
DBREF  1G4Y B  396   487  UNP    P70604   KCNN2_RAT      369    460             
DBREF  1G4Y R    1   148  UNP    P62161   CALM_RAT         2    149             
SEQADV 1G4Y MET B  394  UNP  P70604              CLONING ARTIFACT               
SEQADV 1G4Y GLY B  395  UNP  P70604              CLONING ARTIFACT               
SEQADV 1G4Y LEU B  488  UNP  P70604              EXPRESSION TAG                 
SEQADV 1G4Y GLU B  489  UNP  P70604              EXPRESSION TAG                 
SEQADV 1G4Y HIS B  490  UNP  P70604              EXPRESSION TAG                 
SEQADV 1G4Y HIS B  491  UNP  P70604              EXPRESSION TAG                 
SEQADV 1G4Y HIS B  492  UNP  P70604              EXPRESSION TAG                 
SEQADV 1G4Y HIS B  493  UNP  P70604              EXPRESSION TAG                 
SEQADV 1G4Y HIS B  494  UNP  P70604              EXPRESSION TAG                 
SEQRES   1 B  101  MET GLY ARG LYS LEU GLU LEU THR LYS ALA GLU LYS HIS          
SEQRES   2 B  101  VAL HIS ASN PHE MET MET ASP THR GLN LEU THR LYS ARG          
SEQRES   3 B  101  VAL LYS ASN ALA ALA ALA ASN VAL LEU ARG GLU THR TRP          
SEQRES   4 B  101  LEU ILE TYR LYS ASN THR LYS LEU VAL LYS LYS ILE ASP          
SEQRES   5 B  101  HIS ALA LYS VAL ARG LYS HIS GLN ARG LYS PHE LEU GLN          
SEQRES   6 B  101  ALA ILE HIS GLN LEU ARG SER VAL LYS MET GLU GLN ARG          
SEQRES   7 B  101  LYS LEU ASN ASP GLN ALA ASN THR LEU VAL ASP LEU ALA          
SEQRES   8 B  101  LYS THR GLN LEU GLU HIS HIS HIS HIS HIS                      
SEQRES   1 R  148  ALA ASP GLN LEU THR GLU GLU GLN ILE ALA GLU PHE LYS          
SEQRES   2 R  148  GLU ALA PHE SER LEU PHE ASP LYS ASP GLY ASP GLY THR          
SEQRES   3 R  148  ILE THR THR LYS GLU LEU GLY THR VAL MET ARG SER LEU          
SEQRES   4 R  148  GLY GLN ASN PRO THR GLU ALA GLU LEU GLN ASP MET ILE          
SEQRES   5 R  148  ASN GLU VAL ASP ALA ASP GLY ASN GLY THR ILE ASP PHE          
SEQRES   6 R  148  PRO GLU PHE LEU THR MET MET ALA ARG LYS MET LYS ASP          
SEQRES   7 R  148  THR ASP SER GLU GLU GLU ILE ARG GLU ALA PHE ARG VAL          
SEQRES   8 R  148  PHE ASP LYS ASP GLY ASN GLY TYR ILE SER ALA ALA GLU          
SEQRES   9 R  148  LEU ARG HIS VAL MET THR ASN LEU GLY GLU LYS LEU THR          
SEQRES  10 R  148  ASP GLU GLU VAL ASP GLU MET ILE ARG GLU ALA ASP ILE          
SEQRES  11 R  148  ASP GLY ASP GLY GLN VAL ASN TYR GLU GLU PHE VAL GLN          
SEQRES  12 R  148  MET MET THR ALA LYS                                          
HET     CA  R1001       1                                                       
HET     CA  R1002       1                                                       
HET    SO4  B 799       5                                                       
HETNAM      CA CALCIUM ION                                                      
HETNAM     SO4 SULFATE ION                                                      
FORMUL   3   CA    2(CA 2+)                                                     
FORMUL   5  SO4    O4 S 2-                                                      
FORMUL   6  HOH   *199(H2 O)                                                    
HELIX    1   1 ASP B  413  LEU B  440  1                                  28    
HELIX    2   2 ASP B  445  THR B  486  1                                  42    
HELIX    3   3 THR R    5  ASP R   20  1                                  16    
HELIX    4   4 THR R   28  LEU R   39  1                                  12    
HELIX    5   5 THR R   44  VAL R   55  1                                  12    
HELIX    6   6 PRO R   66  ARG R   74  1                                   9    
HELIX    7   7 SER R   81  VAL R   91  1                                  11    
HELIX    8   8 ALA R  102  THR R  110  1                                   9    
HELIX    9   9 THR R  117  ASP R  129  1                                  13    
HELIX   10  10 TYR R  138  ALA R  147  1                                  10    
SHEET    1   A 2 TYR R  99  SER R 101  0                                        
SHEET    2   A 2 GLN R 135  ASN R 137 -1  N  VAL R 136   O  ILE R 100           
LINK        CA    CA R1001                 OE2 GLU R  31     1555   1555  2.68  
LINK        CA    CA R1001                 OD1 ASP R  22     1555   1555  2.12  
LINK        CA    CA R1001                 OD2 ASP R  22     1555   1555  3.31  
LINK        CA    CA R1001                 OE1 GLU R  31     1555   1555  2.32  
LINK        CA    CA R1001                 OD1 ASP R  20     1555   1555  2.40  
LINK        CA    CA R1001                 O   HOH R1024     1555   1555  2.25  
LINK        CA    CA R1001                 OD1 ASP R  24     1555   1555  2.33  
LINK        CA    CA R1001                 O   THR R  26     1555   1555  2.33  
LINK        CA    CA R1002                 O   THR R  62     1555   1555  2.68  
LINK        CA    CA R1002                 OD2 ASP R  58     1555   1555  2.42  
LINK        CA    CA R1002                 OD1 ASN R  60     1555   1555  2.64  
LINK        CA    CA R1002                 OE1 GLU R  67     1555   1555  3.03  
LINK        CA    CA R1002                 OE2 GLU R  67     1555   1555  2.23  
LINK        CA    CA R1002                 OD1 ASP R  56     1555   1555  2.05  
SITE     1 AC1  6 ASP R  20  ASP R  22  ASP R  24  THR R  26                    
SITE     2 AC1  6 GLU R  31  HOH R1024                                          
SITE     1 AC2  6 ASP R  56  ALA R  57  ASP R  58  ASN R  60                    
SITE     2 AC2  6 THR R  62  GLU R  67                                          
SITE     1 AC3  4 ARG B 429  LYS B 451  HIS B 452  LYS B 455                    
CRYST1   77.650   66.690   64.690  90.00  93.70  90.00 C 1 2 1       4          
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      0.012878  0.000000  0.000833        0.00000                         
SCALE2      0.000000  0.014995  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.015491        0.00000