PDB Short entry for 1EXR
HEADER    METAL TRANSPORT                         03-MAY-00   1EXR              
TITLE     THE 1.0 ANGSTROM CRYSTAL STRUCTURE OF CA+2 BOUND CALMODULIN           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CALMODULIN;                                                
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PARAMECIUM TETRAURELIA;                         
SOURCE   3 ORGANISM_TAXID: 5888;                                                
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: JM109;                                     
SOURCE   7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PKK233-3                                  
KEYWDS    CALMODULIN, HIGH RESOLUTION, DISORDER, METAL TRANSPORT                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.A.WILSON,A.T.BRUNGER                                                
REVDAT   4   24-JUL-19 1EXR    1       REMARK                                   
REVDAT   3   24-FEB-09 1EXR    1       VERSN                                    
REVDAT   2   09-SEP-03 1EXR    1       JRNL   REMARK DBREF  MASTER              
REVDAT   1   20-SEP-00 1EXR    0                                                
JRNL        AUTH   M.A.WILSON,A.T.BRUNGER                                       
JRNL        TITL   THE 1.0 A CRYSTAL STRUCTURE OF CA(2+)-BOUND CALMODULIN: AN   
JRNL        TITL 2 ANALYSIS OF DISORDER AND IMPLICATIONS FOR FUNCTIONALLY       
JRNL        TITL 3 RELEVANT PLASTICITY                                          
JRNL        REF    J.MOL.BIOL.                   V. 301  1237 2000              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   10966818                                                     
JRNL        DOI    10.1006/JMBI.2000.4029                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : SHELXL-97                                            
REMARK   3   AUTHORS     : G.M.SHELDRICK                                        
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 500.00                         
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 96.0                           
REMARK   3   CROSS-VALIDATION METHOD           : FREE R                         
REMARK   3   FREE R VALUE TEST SET SELECTION   : RANDOM                         
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (NO CUTOFF).                         
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : 0.136                  
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : 0.134                  
REMARK   3   FREE R VALUE                  (NO CUTOFF) : 0.163                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 10.000                 
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : 7782                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : 77150                  
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F).                     
REMARK   3   R VALUE   (WORKING + TEST SET, F>4SIG(F)) : 0.124                  
REMARK   3   R VALUE          (WORKING SET, F>4SIG(F)) : 0.122                  
REMARK   3   FREE R VALUE                  (F>4SIG(F)) : 0.151                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 10.000                 
REMARK   3   FREE R VALUE TEST SET COUNT   (F>4SIG(F)) : 6361                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (F>4SIG(F)) : 63169                  
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS      : 1150                                          
REMARK   3   NUCLEIC ACID ATOMS : 0                                             
REMARK   3   HETEROGEN ATOMS    : 5                                             
REMARK   3   SOLVENT ATOMS      : 178                                           
REMARK   3                                                                      
REMARK   3  MODEL REFINEMENT.                                                   
REMARK   3   OCCUPANCY SUM OF NON-HYDROGEN ATOMS      : 1327.0                  
REMARK   3   OCCUPANCY SUM OF HYDROGEN ATOMS          : 1089.0                  
REMARK   3   NUMBER OF DISCRETELY DISORDERED RESIDUES : 36                      
REMARK   3   NUMBER OF LEAST-SQUARES PARAMETERS       : 14894                   
REMARK   3   NUMBER OF RESTRAINTS                     : 22732                   
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM RESTRAINT TARGET VALUES.                        
REMARK   3   BOND LENGTHS                         (A) : 0.010                   
REMARK   3   ANGLE DISTANCES                      (A) : 0.030                   
REMARK   3   SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000                   
REMARK   3   DISTANCES FROM RESTRAINT PLANES      (A) : 0.023                   
REMARK   3   ZERO CHIRAL VOLUMES               (A**3) : 0.070                   
REMARK   3   NON-ZERO CHIRAL VOLUMES           (A**3) : 0.080                   
REMARK   3   ANTI-BUMPING DISTANCE RESTRAINTS     (A) : 0.080                   
REMARK   3   RIGID-BOND ADP COMPONENTS         (A**2) : 0.000                   
REMARK   3   SIMILAR ADP COMPONENTS            (A**2) : 0.050                   
REMARK   3   APPROXIMATELY ISOTROPIC ADPS      (A**2) : 0.100                   
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED: MOEWS & KRETSINGER, J.MOL.BIOL.91 (1973)201-228       
REMARK   3                                                                      
REMARK   3  STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER                      
REMARK   3   SPECIAL CASE: NULL                                                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: ANISOTROPIC REFINEMENT REDUCED FREE R     
REMARK   3  (NO CUTOFF) BY 9%                                                   
REMARK   4                                                                      
REMARK   4 1EXR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-MAY-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000011001.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 21-JUL-99                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 5.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 2                                  
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) : 0.886                              
REMARK 200  MONOCHROMATOR                  : DOUBLE CRYSTAL                     
REMARK 200  OPTICS                         : MIRROR                             
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 78247                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.000                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.9                               
REMARK 200  DATA REDUNDANCY                : 5.400                              
REMARK 200  R MERGE                    (I) : 0.07300                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 17.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.00                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.04                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 83.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.30                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.50600                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.100                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: UNPUBLISHED 1.1 A PARAMECIUM TETRAURELIA             
REMARK 200  CALMODULIN                                                          
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 40.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.99                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: MPD, CALCIUM CHLORIDE, SODIUM            
REMARK 280  CACODYLATE, PH 5.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE      
REMARK 280  278K                                                                
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,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                                                                      
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: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
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 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     ALA A     1                                                      
REMARK 465     LYS A   148                                                      
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    GLU A  54   OE1 -  CD  -  OE2 ANGL. DEV. =  12.9 DEGREES          
REMARK 500    LEU A  69   CA  -  CB  -  CG  ANGL. DEV. =  14.1 DEGREES          
REMARK 500    ARG A  74   CD  -  NE  -  CZ  ANGL. DEV. =  16.7 DEGREES          
REMARK 500    ARG A  74   NE  -  CZ  -  NH1 ANGL. DEV. =   8.4 DEGREES          
REMARK 500    ARG A  74   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    GLU A  78   OE1 -  CD  -  OE2 ANGL. DEV. =  -7.4 DEGREES          
REMARK 500    ASP A 119   CB  -  CG  -  OD2 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    ASP A 122   CB  -  CG  -  OD1 ANGL. DEV. =   6.1 DEGREES          
REMARK 500    ARG A 126   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.7 DEGREES          
REMARK 500    ARG A 143   CG  -  CD  -  NE  ANGL. DEV. =  29.0 DEGREES          
REMARK 500    ARG A 143   CD  -  NE  -  CZ  ANGL. DEV. =  17.1 DEGREES          
REMARK 500    ARG A 143   NE  -  CZ  -  NH1 ANGL. DEV. =   4.1 DEGREES          
REMARK 500    ARG A 143   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.9 DEGREES          
REMARK 500    SER A 147   CA  -  C   -  O   ANGL. DEV. =  15.0 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    GLN A   3      -70.65   -175.69                                   
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                              CA A1000  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A2122   O                                                      
REMARK 620 2 GLU A  31   OE1  83.1                                              
REMARK 620 3 THR A  26   O   105.7  75.8                                        
REMARK 620 4 ASP A  22   OD1  86.7 126.8 156.1                                  
REMARK 620 5 GLU A  31   OE2  90.1  53.0 124.2  75.0                            
REMARK 620 6 ASP A  20   OD1 164.1 112.7  80.2  82.9  98.7                      
REMARK 620 7 ASP A  24   OD1  81.8 146.3  79.6  82.2 156.2  84.9                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A1001  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  56   OD1                                                    
REMARK 620 2 ASN A  60   OD1  85.9                                              
REMARK 620 3 THR A  62   O    79.3  79.5                                        
REMARK 620 4 HOH A2011   O   143.3  73.0  67.7                                  
REMARK 620 5 GLU A  67   OE1 103.1 157.1  81.6  88.0                            
REMARK 620 6 ASP A  58   OD1  77.6  76.5 147.6 123.8 125.8                      
REMARK 620 7 HOH A2127   O   152.8  92.7 127.2  60.1  88.5  75.7                
REMARK 620 8 GLU A  67   OE2  87.4 151.1 126.7 124.9  51.5  74.6  80.7          
REMARK 620 N                    1     2     3     4     5     6     7           
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A1002  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 140   OE1                                                    
REMARK 620 2 ASP A 133   OD1 147.3                                              
REMARK 620 3 ASP A 129   OD1 108.7  93.5                                        
REMARK 620 4 GLU A 140   OE2  52.3 158.4  81.8                                  
REMARK 620 5 HOH A2129   O    83.0  79.2 166.2 100.6                            
REMARK 620 6 HIS A 135   O    79.6  76.9  89.4 123.9 100.2                      
REMARK 620 7 ASP A 131   OD1 126.8  78.1  83.6  80.4  83.4 153.5                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A1003  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A2123   O                                                      
REMARK 620 2 GLU A  47   OE1  85.4                                              
REMARK 620 3 GLU A  47   OE2 133.3  52.8                                        
REMARK 620 4 HOH A2125   O    81.6  86.9  76.7                                  
REMARK 620 5 HOH A2126   O   148.9 110.5  74.4 124.3                            
REMARK 620 6 HOH A2124   O    76.2  91.1 118.9 157.8  77.0                      
REMARK 620 7 ASP A  58   OD2  88.5 169.7 128.9  84.0  78.8  95.5                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A1004  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  93   OD1                                                    
REMARK 620 2 ASP A  95   OD1  86.8                                              
REMARK 620 3 LEU A  99   O    86.9 155.4                                        
REMARK 620 4 GLU A 104   OE1  98.6 126.8  77.7                                  
REMARK 620 5 GLU A 104   OE2 100.3  74.6 130.0  52.3                            
REMARK 620 6 HOH A2128   O   174.2  88.4  96.2  86.9  81.5                      
REMARK 620 7 ASN A  97   OD1  87.5  77.4  78.7 155.2 150.3  88.3                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 1000                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 1001                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 1002                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 1003                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 1004                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1CLM   RELATED DB: PDB                                   
REMARK 900 1.8 ANGSTROM STRUCTURE OF WILD TYPE PARAMECIUM TETRAURELIA           
REMARK 900 CALMODULIN                                                           
REMARK 900 RELATED ID: 1OSA   RELATED DB: PDB                                   
REMARK 900 1.68 ANGSTROM STRUCTURE OF RECOMBINANT PARAMECIUM TETRAURELIA        
REMARK 900 CALMODULIN                                                           
DBREF  1EXR A    1   148  UNP    P07463   CALM_PARTE       2    149             
SEQRES   1 A  148  ALA GLU GLN LEU THR GLU GLU GLN ILE ALA GLU PHE LYS          
SEQRES   2 A  148  GLU ALA PHE ALA LEU PHE ASP LYS ASP GLY ASP GLY THR          
SEQRES   3 A  148  ILE THR THR LYS GLU LEU GLY THR VAL MET ARG SER LEU          
SEQRES   4 A  148  GLY GLN ASN PRO THR GLU ALA GLU LEU GLN ASP MET ILE          
SEQRES   5 A  148  ASN GLU VAL ASP ALA ASP GLY ASN GLY THR ILE ASP PHE          
SEQRES   6 A  148  PRO GLU PHE LEU SER LEU MET ALA ARG LYS MET LYS GLU          
SEQRES   7 A  148  GLN ASP SER GLU GLU GLU LEU ILE GLU ALA PHE LYS VAL          
SEQRES   8 A  148  PHE ASP ARG ASP GLY ASN GLY LEU ILE SER ALA ALA GLU          
SEQRES   9 A  148  LEU ARG HIS VAL MET THR ASN LEU GLY GLU LYS LEU THR          
SEQRES  10 A  148  ASP ASP GLU VAL ASP GLU MET ILE ARG GLU ALA ASP ILE          
SEQRES  11 A  148  ASP GLY ASP GLY HIS ILE ASN TYR GLU GLU PHE VAL ARG          
SEQRES  12 A  148  MET MET VAL SER LYS                                          
HET     CA  A1000       1                                                       
HET     CA  A1001       1                                                       
HET     CA  A1002       1                                                       
HET     CA  A1003       1                                                       
HET     CA  A1004       1                                                       
HETNAM      CA CALCIUM ION                                                      
FORMUL   2   CA    5(CA 2+)                                                     
FORMUL   7  HOH   *178(H2 O)                                                    
HELIX    1   1 THR A    5  ASP A   20  1                                  16    
HELIX    2   2 THR A   28  LEU A   39  1                                  12    
HELIX    3   3 THR A   44  GLU A   54  1                                  11    
HELIX    4   4 PHE A   65  ASP A   93  1                                  29    
HELIX    5   5 SER A  101  LEU A  112  1                                  12    
HELIX    6   6 THR A  117  ASP A  129  1                                  13    
HELIX    7   7 ASN A  137  SER A  147  1                                  11    
SHEET    1   A 2 THR A  26  ILE A  27  0                                        
SHEET    2   A 2 ILE A  63  ASP A  64 -1  N  ILE A  63   O  ILE A  27           
LINK        CA    CA A1000                 O   HOH A2122     1555   1555  2.35  
LINK        CA    CA A1000                 OE1 GLU A  31     1555   1555  2.47  
LINK        CA    CA A1000                 O   THR A  26     1555   1555  2.36  
LINK        CA    CA A1000                 OD1 ASP A  22     1555   1555  2.44  
LINK        CA    CA A1000                 OE2 GLU A  31     1555   1555  2.48  
LINK        CA    CA A1000                 OD1 ASP A  20     1555   1555  2.31  
LINK        CA    CA A1000                 OD1 ASP A  24     1555   1555  2.35  
LINK        CA    CA A1001                 OD1 ASP A  56     1555   1555  2.34  
LINK        CA    CA A1001                 OD1 ASN A  60     1555   1555  2.40  
LINK        CA    CA A1001                 O   THR A  62     1555   1555  2.41  
LINK        CA    CA A1001                 O   HOH A2011     1555   1555  2.90  
LINK        CA    CA A1001                 OE1 GLU A  67     1555   1555  2.47  
LINK        CA    CA A1001                 OD1 ASP A  58     1555   1555  2.44  
LINK        CA    CA A1001                 O   HOH A2127     1555   1555  2.42  
LINK        CA    CA A1001                 OE2 GLU A  67     1555   1555  2.60  
LINK        CA    CA A1002                 OE1 GLU A 140     1555   1555  2.44  
LINK        CA    CA A1002                 OD1 ASP A 133     1555   1555  2.39  
LINK        CA    CA A1002                 OD1 ASP A 129     1555   1555  2.30  
LINK        CA    CA A1002                 OE2 GLU A 140     1555   1555  2.55  
LINK        CA    CA A1002                 O   HOH A2129     1555   1555  2.42  
LINK        CA    CA A1002                 O   HIS A 135     1555   1555  2.35  
LINK        CA    CA A1002                 OD1 ASP A 131     1555   1555  2.35  
LINK        CA    CA A1003                 O   HOH A2123     1555   1555  2.41  
LINK        CA    CA A1003                 OE1 GLU A  47     1555   1555  2.50  
LINK        CA    CA A1003                 OE2 GLU A  47     1555   1555  2.45  
LINK        CA    CA A1003                 O   HOH A2125     1555   1555  2.40  
LINK        CA    CA A1003                 O   HOH A2126     1555   1555  2.36  
LINK        CA    CA A1003                 O   HOH A2124     1555   1555  2.41  
LINK        CA    CA A1004                 OD1 ASP A  93     1555   1555  2.30  
LINK        CA    CA A1004                 OD1 ASP A  95     1555   1555  2.33  
LINK        CA    CA A1004                 O   LEU A  99     1555   1555  2.28  
LINK        CA    CA A1004                 OE1 GLU A 104     1555   1555  2.46  
LINK        CA    CA A1004                 OE2 GLU A 104     1555   1555  2.54  
LINK        CA    CA A1004                 O   HOH A2128     1555   1555  2.37  
LINK        CA    CA A1004                 OD1 ASN A  97     1555   1555  2.42  
LINK        CA    CA A1003                 OD2 ASP A  58     1555   1545  2.38  
SITE     1 AC1  6 ASP A  20  ASP A  22  ASP A  24  THR A  26                    
SITE     2 AC1  6 GLU A  31  HOH A2122                                          
SITE     1 AC2  7 ASP A  56  ASP A  58  ASN A  60  THR A  62                    
SITE     2 AC2  7 GLU A  67  HOH A2011  HOH A2127                               
SITE     1 AC3  6 ASP A 129  ASP A 131  ASP A 133  HIS A 135                    
SITE     2 AC3  6 GLU A 140  HOH A2129                                          
SITE     1 AC4  6 GLU A  47  ASP A  58  HOH A2123  HOH A2124                    
SITE     2 AC4  6 HOH A2125  HOH A2126                                          
SITE     1 AC5  6 ASP A  93  ASP A  95  ASN A  97  LEU A  99                    
SITE     2 AC5  6 GLU A 104  HOH A2128                                          
CRYST1   25.015   29.415   52.761  89.54  86.10  82.39 P 1           1          
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      0.039976 -0.005341 -0.002731        0.00000                         
SCALE2      0.000000  0.034298  0.000034        0.00000                         
SCALE3      0.000000  0.000000  0.018997        0.00000