PDB Short entry for 1G9Z
HEADER    HYDROLASE/DNA                           28-NOV-00   1G9Z              
TITLE     LAGLIDADG HOMING ENDONUCLEASE I-CREI / DNA PRODUCT COMPLEX WITH       
TITLE    2 MAGNESIUM                                                            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 5'-D(*GP*CP*AP*AP*AP*AP*CP*GP*TP*CP*GP*TP*GP*A)-3';        
COMPND   3 CHAIN: C;                                                            
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: 5'-D(P*GP*AP*CP*AP*GP*TP*TP*TP*CP*G)-3';                   
COMPND   7 CHAIN: D;                                                            
COMPND   8 ENGINEERED: YES;                                                     
COMPND   9 MOL_ID: 3;                                                           
COMPND  10 MOLECULE: 5'-D(*CP*GP*AP*AP*AP*CP*TP*GP*TP*CP*TP*CP*AP*C)-3';        
COMPND  11 CHAIN: E;                                                            
COMPND  12 ENGINEERED: YES;                                                     
COMPND  13 MOL_ID: 4;                                                           
COMPND  14 MOLECULE: 5'-D(P*GP*AP*CP*GP*TP*TP*TP*TP*GP*C)-3';                   
COMPND  15 CHAIN: F;                                                            
COMPND  16 ENGINEERED: YES;                                                     
COMPND  17 MOL_ID: 5;                                                           
COMPND  18 MOLECULE: DNA ENDONUCLEASE I-CREI;                                   
COMPND  19 CHAIN: A, B;                                                         
COMPND  20 SYNONYM: I-CREI HOMING ENDONUCLEASE;                                 
COMPND  21 EC: 3.1.-.-;                                                         
COMPND  22 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 MOL_ID: 2;                                                           
SOURCE   4 SYNTHETIC: YES;                                                      
SOURCE   5 MOL_ID: 3;                                                           
SOURCE   6 SYNTHETIC: YES;                                                      
SOURCE   7 MOL_ID: 4;                                                           
SOURCE   8 SYNTHETIC: YES;                                                      
SOURCE   9 MOL_ID: 5;                                                           
SOURCE  10 ORGANISM_SCIENTIFIC: CHLAMYDOMONAS REINHARDTII;                      
SOURCE  11 ORGANISM_TAXID: 3055;                                                
SOURCE  12 GENE: ENCODED BY AN ORF WITHIN CR.LSU INTRON OF CHLOROPLAST 23S RRNA 
SOURCE  13 GENE;                                                                
SOURCE  14 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE  15 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE  16 EXPRESSION_SYSTEM_STRAIN: 'BL21(DE3);                                
SOURCE  17 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  18 EXPRESSION_SYSTEM_PLASMID: PI-CREI                                   
KEYWDS    LAGLIDADG, HOMING ENDONUCLEASE, NUCLEASE MECHANISM, GROUP I INTRON,   
KEYWDS   2 HYDROLASE-DNA COMPLEX                                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.CHEVALIER,R.J.MONNAT,B.L.STODDARD                                   
REVDAT   4   09-AUG-23 1G9Z    1       REMARK LINK                              
REVDAT   3   24-FEB-09 1G9Z    1       VERSN                                    
REVDAT   2   01-APR-03 1G9Z    1       JRNL                                     
REVDAT   1   02-APR-01 1G9Z    0                                                
JRNL        AUTH   B.S.CHEVALIER,R.J.MONNAT JR.,B.L.STODDARD                    
JRNL        TITL   THE HOMING ENDONUCLEASE I-CREI USES THREE METALS, ONE OF     
JRNL        TITL 2 WHICH IS SHARED BETWEEN THE TWO ACTIVE SITES.                
JRNL        REF    NAT.STRUCT.BIOL.              V.   8   312 2001              
JRNL        REFN                   ISSN 1072-8368                               
JRNL        PMID   11276249                                                     
JRNL        DOI    10.1038/86181                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : NULL                                                 
REMARK   3   AUTHORS     : NULL                                                 
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 19.92                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 1072916.280                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 95.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 44925                          
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) : 0.204                           
REMARK   3   FREE R VALUE                     : 0.249                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2249                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.005                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 7                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.80                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.89                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 75.00                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 4750                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2820                       
REMARK   3   BIN FREE R VALUE                    : 0.3340                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 250                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.021                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2474                                    
REMARK   3   NUCLEIC ACID ATOMS       : 980                                     
REMARK   3   HETEROGEN ATOMS          : 3                                       
REMARK   3   SOLVENT ATOMS            : 857                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 24.10                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 31.10                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 3.18000                                              
REMARK   3    B22 (A**2) : -3.03000                                             
REMARK   3    B33 (A**2) : -0.16000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -2.53000                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.23                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.20                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 50.0                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.29                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.25                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.005                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.100                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 20.40                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.140                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 3.230 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 4.070 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 3.970 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 5.000 ; 2.500                
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  : DNA-RNA_REP.PARAM                              
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  4  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : DNA-RNA.TOP                                    
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  THE STRUCTURE CONTAINS AN AVERAGE OF THE TWO POSSIBLE ORIENTATIONS  
REMARK   3  OF                                                                  
REMARK   3  THE DNA SUBSTRATE (SEE PAPER).  THIS PDB ENTRY CONTAINS ONLY ONE    
REMARK   3  DNA                                                                 
REMARK   3  ORIENTATION FOR CLARITY.                                            
REMARK   4                                                                      
REMARK   4 1G9Z COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-DEC-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000012418.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-APR-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 6.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ALS                                
REMARK 200  BEAMLINE                       : 5.0.2                              
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                  : SILICON CRYSTAL                    
REMARK 200  OPTICS                         : SLITS                              
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 44925                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 95.4                               
REMARK 200  DATA REDUNDANCY                : 3.500                              
REMARK 200  R MERGE                    (I) : 0.03800                            
REMARK 200  R SYM                      (I) : 3.80000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 21.3000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.89                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 75.3                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.20                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.18500                            
REMARK 200  R SYM FOR SHELL            (I) : 18.5000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: EPMR                                                  
REMARK 200 STARTING MODEL: CRE/DNA (PDB ENTRY 1BP7)                             
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 52.02                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.56                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 30% PEG400, PH 6.5, VAPOR DIFFUSION,     
REMARK 280  HANGING DROP                                                        
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,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       33.95000            
REMARK 290   SMTRY3   2  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: PSEUDO-PALINDROMIC HOMING SITE (WILDTYPE SEQUENCE) IS        
REMARK 300 OBSERVED IN BOTH POSSIBLE ORIENTATIONS WITHIN THE CRYSTAL; NON-      
REMARK 300 PALINDROMIC BASES ARE AVERAGED IN FINAL REFINED MODEL, AND           
REMARK 300 COORDINATES OF ALTERNATE DNA ORIENTATION ARE AVAILABLE BY REQUEST    
REMARK 300 FROM CORRESPONDING AUTHOR.                                           
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: HEXAMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C, D, E, F, A, B                      
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500     DG D 515   P      DG D 515   OP3    -0.085                       
REMARK 500     DG F 615   P      DG F 615   OP3    -0.090                       
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    GLU A 117      -95.90   -109.78                                   
REMARK 500    ARG A 149        8.15    -62.93                                   
REMARK 500    ARG B 349        9.00    -60.49                                   
REMARK 500    LEU B 352       77.85    -69.99                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500     DC E 614         0.09    SIDE CHAIN                              
REMARK 500     DC F 624         0.09    SIDE CHAIN                              
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                              MG C 902  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  DA C 514   O3'                                                    
REMARK 620 2  DG D 515   OP2  70.6                                              
REMARK 620 3  DC E 614   O3'  99.1  94.4                                        
REMARK 620 4  DG F 615   OP1 100.0 169.8  82.9                                  
REMARK 620 5 ASP A  20   OD1  83.1  92.3 173.3  90.5                            
REMARK 620 6 ASP B 220   OD1 162.7  92.4  85.0  97.1  94.7                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG F 903  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  DA C 514   OP1                                                    
REMARK 620 2  DG F 615   OP2  86.7                                              
REMARK 620 3  DG F 615   OP1  92.2  67.1                                        
REMARK 620 4 ASP A  20   OD2  89.5 171.7 105.8                                  
REMARK 620 5 GLY B 219   O   177.2  92.0  89.6  92.1                            
REMARK 620 6 HOH B 355   O    88.8  90.7 157.8  96.5  88.8                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG D 901  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  DG D 515   OP2                                                    
REMARK 620 2  DG D 515   OP3  64.5                                              
REMARK 620 3  DC E 614   OP1 100.5  85.9                                        
REMARK 620 4 GLY A  19   O    79.0  88.8 174.3                                  
REMARK 620 5 HOH A 154   O   161.4  99.1  86.3  92.6                            
REMARK 620 6 ASP B 220   OD2  98.4 162.9  97.3  88.4  97.9                      
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 MG D 901                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG C 902                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG F 903                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1G9Y   RELATED DB: PDB                                   
REMARK 900 HOMING ENDONUCLEASE I-CREI / DNA SUBSTRATE COMPLEX WITH CALCIUM      
DBREF  1G9Z A    2   153  UNP    P05725   DNE1_CHLRE       2    153             
DBREF  1G9Z B  202   353  UNP    P05725   DNE1_CHLRE       2    153             
DBREF  1G9Z C  501   514  PDB    1G9Z     1G9Z           501    514             
DBREF  1G9Z D  515   524  PDB    1G9Z     1G9Z           515    524             
DBREF  1G9Z E  601   614  PDB    1G9Z     1G9Z           601    614             
DBREF  1G9Z F  615   624  PDB    1G9Z     1G9Z           615    624             
SEQADV 1G9Z THR A   42  UNP  P05725    ALA    42 SEE REMARK 999                 
SEQADV 1G9Z GLU A  110  UNP  P05725    TRP   110 SEE REMARK 999                 
SEQADV 1G9Z GLN A  111  UNP  P05725    ARG   111 SEE REMARK 999                 
SEQADV 1G9Z THR B  242  UNP  P05725    ALA    42 SEE REMARK 999                 
SEQADV 1G9Z GLU B  310  UNP  P05725    TRP   110 SEE REMARK 999                 
SEQADV 1G9Z GLN B  311  UNP  P05725    ARG   111 SEE REMARK 999                 
SEQRES   1 C   14   DG  DC  DA  DA  DA  DA  DC  DG  DT  DC  DG  DT  DG          
SEQRES   2 C   14   DA                                                          
SEQRES   1 D   10   DG  DA  DC  DA  DG  DT  DT  DT  DC  DG                      
SEQRES   1 E   14   DC  DG  DA  DA  DA  DC  DT  DG  DT  DC  DT  DC  DA          
SEQRES   2 E   14   DC                                                          
SEQRES   1 F   10   DG  DA  DC  DG  DT  DT  DT  DT  DG  DC                      
SEQRES   1 A  152  ASN THR LYS TYR ASN LYS GLU PHE LEU LEU TYR LEU ALA          
SEQRES   2 A  152  GLY PHE VAL ASP GLY ASP GLY SER ILE ILE ALA GLN ILE          
SEQRES   3 A  152  LYS PRO ASN GLN SER TYR LYS PHE LYS HIS GLN LEU SER          
SEQRES   4 A  152  LEU THR PHE GLN VAL THR GLN LYS THR GLN ARG ARG TRP          
SEQRES   5 A  152  PHE LEU ASP LYS LEU VAL ASP GLU ILE GLY VAL GLY TYR          
SEQRES   6 A  152  VAL ARG ASP ARG GLY SER VAL SER ASP TYR ILE LEU SER          
SEQRES   7 A  152  GLU ILE LYS PRO LEU HIS ASN PHE LEU THR GLN LEU GLN          
SEQRES   8 A  152  PRO PHE LEU LYS LEU LYS GLN LYS GLN ALA ASN LEU VAL          
SEQRES   9 A  152  LEU LYS ILE ILE GLU GLN LEU PRO SER ALA LYS GLU SER          
SEQRES  10 A  152  PRO ASP LYS PHE LEU GLU VAL CYS THR TRP VAL ASP GLN          
SEQRES  11 A  152  ILE ALA ALA LEU ASN ASP SER LYS THR ARG LYS THR THR          
SEQRES  12 A  152  SER GLU THR VAL ARG ALA VAL LEU ASP                          
SEQRES   1 B  152  ASN THR LYS TYR ASN LYS GLU PHE LEU LEU TYR LEU ALA          
SEQRES   2 B  152  GLY PHE VAL ASP GLY ASP GLY SER ILE ILE ALA GLN ILE          
SEQRES   3 B  152  LYS PRO ASN GLN SER TYR LYS PHE LYS HIS GLN LEU SER          
SEQRES   4 B  152  LEU THR PHE GLN VAL THR GLN LYS THR GLN ARG ARG TRP          
SEQRES   5 B  152  PHE LEU ASP LYS LEU VAL ASP GLU ILE GLY VAL GLY TYR          
SEQRES   6 B  152  VAL ARG ASP ARG GLY SER VAL SER ASP TYR ILE LEU SER          
SEQRES   7 B  152  GLU ILE LYS PRO LEU HIS ASN PHE LEU THR GLN LEU GLN          
SEQRES   8 B  152  PRO PHE LEU LYS LEU LYS GLN LYS GLN ALA ASN LEU VAL          
SEQRES   9 B  152  LEU LYS ILE ILE GLU GLN LEU PRO SER ALA LYS GLU SER          
SEQRES  10 B  152  PRO ASP LYS PHE LEU GLU VAL CYS THR TRP VAL ASP GLN          
SEQRES  11 B  152  ILE ALA ALA LEU ASN ASP SER LYS THR ARG LYS THR THR          
SEQRES  12 B  152  SER GLU THR VAL ARG ALA VAL LEU ASP                          
HET     MG  C 902       1                                                       
HET     MG  D 901       1                                                       
HET     MG  F 903       1                                                       
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   7   MG    3(MG 2+)                                                     
FORMUL  10  HOH   *857(H2 O)                                                    
HELIX    1   1 ASN A    6  ASP A   20  1                                  15    
HELIX    2   2 ARG A   51  GLY A   63  1                                  13    
HELIX    3   3 GLU A   80  GLN A   92  1                                  13    
HELIX    4   4 PRO A   93  LEU A   95  5                                   3    
HELIX    5   5 LYS A   98  GLN A  111  1                                  14    
HELIX    6   6 GLN A  111  LYS A  116  1                                   6    
HELIX    7   7 SER A  118  ASN A  136  1                                  19    
HELIX    8   8 THR A  144  ARG A  149  1                                   6    
HELIX    9   9 ALA A  150  LEU A  152  5                                   3    
HELIX   10  10 ASN B  206  ASP B  220  1                                  15    
HELIX   11  11 ARG B  251  GLY B  263  1                                  13    
HELIX   12  12 GLU B  280  GLN B  292  1                                  13    
HELIX   13  13 PRO B  293  LEU B  295  5                                   3    
HELIX   14  14 LYS B  298  LYS B  316  1                                  19    
HELIX   15  15 SER B  318  ASN B  336  1                                  19    
HELIX   16  16 THR B  344  ARG B  349  1                                   6    
HELIX   17  17 ALA B  350  LEU B  352  5                                   3    
SHEET    1   A 4 GLY A  21  PRO A  29  0                                        
SHEET    2   A 4 HIS A  37  LYS A  48 -1  N  GLN A  38   O  LYS A  28           
SHEET    3   A 4 VAL A  73  ASP A  75 -1  N  SER A  74   O  GLN A  47           
SHEET    4   A 4 ARG A  68  ARG A  70 -1  N  ARG A  68   O  ASP A  75           
SHEET    1   B 4 GLY B 221  PRO B 229  0                                        
SHEET    2   B 4 HIS B 237  LYS B 248 -1  O  GLN B 238   N  LYS B 228           
SHEET    3   B 4 VAL B 273  LEU B 278 -1  N  SER B 274   O  GLN B 247           
SHEET    4   B 4 TYR B 266  ARG B 270 -1  O  TYR B 266   N  ILE B 277           
LINK         O3'  DA C 514                MG    MG C 902     1555   1555  2.40  
LINK         OP1  DA C 514                MG    MG F 903     1555   1555  2.03  
LINK        MG    MG C 902                 OP2  DG D 515     1555   1555  2.02  
LINK        MG    MG C 902                 O3'  DC E 614     1555   1555  2.35  
LINK        MG    MG C 902                 OP1  DG F 615     1555   1555  2.10  
LINK        MG    MG C 902                 OD1 ASP A  20     1555   1555  2.01  
LINK        MG    MG C 902                 OD1 ASP B 220     1555   1555  2.01  
LINK         OP2  DG D 515                MG    MG D 901     1555   1555  2.27  
LINK         OP3  DG D 515                MG    MG D 901     1555   1555  2.45  
LINK        MG    MG D 901                 OP1  DC E 614     1555   1555  1.91  
LINK        MG    MG D 901                 O   GLY A  19     1555   1555  2.05  
LINK        MG    MG D 901                 O   HOH A 154     1555   1555  2.15  
LINK        MG    MG D 901                 OD2 ASP B 220     1555   1555  2.04  
LINK         OP2  DG F 615                MG    MG F 903     1555   1555  2.39  
LINK         OP1  DG F 615                MG    MG F 903     1555   1555  2.16  
LINK        MG    MG F 903                 OD2 ASP A  20     1555   1555  1.99  
LINK        MG    MG F 903                 O   GLY B 219     1555   1555  2.09  
LINK        MG    MG F 903                 O   HOH B 355     1555   1555  2.16  
SITE     1 AC1  5 GLY A  19  HOH A 154  ASP B 220   DG D 515                    
SITE     2 AC1  5  DC E 614                                                     
SITE     1 AC2  7 ASP A  20  ASP B 220   DA C 514   DG D 515                    
SITE     2 AC2  7  DC E 614   DG F 615   MG F 903                               
SITE     1 AC3  6 ASP A  20  GLY B 219  HOH B 355   DA C 514                    
SITE     2 AC3  6  MG C 902   DG F 615                                          
CRYST1   43.000   67.900   88.300  90.00  91.60  90.00 P 1 21 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      0.023256  0.000000  0.000650        0.00000                         
SCALE2      0.000000  0.014728  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011329        0.00000