HEADER    DNA                                     19-APR-05   1ZEX              
TITLE     CCG A-DNA                                                             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 5'-D(*CP*CP*CP*GP*GP*CP*CP*GP*GP*G)-3';                    
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 OTHER_DETAILS: DNA WAS SYNTHESIZED ON AN APPLIED BIOSYSTEMS DNA      
SOURCE   4 SYNTHESIZER USING PHOSPHORAMIDITE CHEMISTRY, WITH THE TRITYL-        
SOURCE   5 PROTECTING GROUP LEFT INTACT AT THE 5'- TERMINAL NUCLEOTIDE THEN     
SOURCE   6 DEPROTECTED BY TREATMENT WITH 3% ACETIC ACID FOR FIFTEEN MINUTES,    
SOURCE   7 NEUTRALIZED WITH AMMONIUM HYDROXIDE, AND DESALTED ON A SIGMA G-25    
SOURCE   8 SEPHADEX COLUMN.                                                     
KEYWDS    CRYSTALLOGRAPHIC SCREEN, DNA STRUCTURE, HOLLIDAY JUNCTION, MOLECULAR  
KEYWDS   2 STRUCTURE, DNA                                                       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    F.A.HAYS,A.T.TEEGARDEN,Z.J.R.JONES,M.HARMS,D.RAUP,J.WATSON,           
AUTHOR   2 E.CAVALIERE,P.S.HO                                                   
REVDAT   5   03-APR-24 1ZEX    1       REMARK                                   
REVDAT   4   14-FEB-24 1ZEX    1       REMARK                                   
REVDAT   3   11-OCT-17 1ZEX    1       REMARK                                   
REVDAT   2   24-FEB-09 1ZEX    1       VERSN                                    
REVDAT   1   10-MAY-05 1ZEX    0                                                
JRNL        AUTH   F.A.HAYS,A.TEEGARDEN,Z.J.JONES,M.HARMS,D.RAUP,J.WATSON,      
JRNL        AUTH 2 E.CAVALIERE,P.S.HO                                           
JRNL        TITL   HOW SEQUENCE DEFINES STRUCTURE: A CRYSTALLOGRAPHIC MAP OF    
JRNL        TITL 2 DNA STRUCTURE AND CONFORMATION.                              
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V. 102  7157 2005              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   15870206                                                     
JRNL        DOI    10.1073/PNAS.0409455102                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.65 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0003                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.65                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 16.39                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 100.0                          
REMARK   3   NUMBER OF REFLECTIONS             : 5137                           
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 + TEST SET) : 0.248                           
REMARK   3   R VALUE            (WORKING SET) : 0.240                           
REMARK   3   FREE R VALUE                     : 0.250                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.800                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 622                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.65                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.69                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 288                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.0                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2680                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 34                           
REMARK   3   BIN FREE R VALUE                    : 0.3500                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 0                                       
REMARK   3   NUCLEIC ACID ATOMS       : 404                                     
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 51                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 7.18                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.37000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : -0.37000                                             
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.164         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.132         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.093         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.716         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.845                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.833                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):   452 ; 0.006 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):   694 ; 1.292 ; 3.000       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):    78 ; 0.055 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):   210 ; 0.003 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   193 ; 0.188 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):   256 ; 0.268 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):    37 ; 0.231 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    35 ; 0.242 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):     7 ; 0.192 ; 0.200       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   672 ; 0.713 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   694 ; 1.104 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: THIS STRUCTURE IS NOT REFINED TO ITS      
REMARK   3  LOWEST R AND RFREE VALUES. PLEASE REFER TO CITED ARTICLE ABOVE      
REMARK   3  FOR MORE INFORMATION.                                               
REMARK   4                                                                      
REMARK   4 1ZEX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-APR-05.                  
REMARK 100 THE DEPOSITION ID IS D_1000032640.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 21-OCT-03                          
REMARK 200  TEMPERATURE           (KELVIN) : 103.0                              
REMARK 200  PH                             : 7.00                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RUH3R                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.542                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 5906                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.650                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 99.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 93.8                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : 0.04900                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 16.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.65                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.71                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 76.8                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.15000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 4.720                              
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: NDB ENTRY ADJ049                                     
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 33.80                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NA CACODYLATE, CACL2, SPERMINE, MPD IN   
REMARK 280  RESEVOIR, PH 7.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE        
REMARK 280  298K, PH 7.00                                                       
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
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       11.97800            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       22.46650            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       22.56650            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       22.46650            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       11.97800            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       22.56650            
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 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 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 B    28     O    HOH B    57              1.95            
REMARK 500   N2    DG B    18     O    HOH B    47              1.99            
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     DC A   1   O4' -  C1' -  N1  ANGL. DEV. =   4.2 DEGREES          
REMARK 500     DC A   2   O4' -  C1' -  N1  ANGL. DEV. =   3.5 DEGREES          
REMARK 500     DC A   3   O4' -  C1' -  N1  ANGL. DEV. =   4.7 DEGREES          
REMARK 500     DC A   6   O4' -  C1' -  N1  ANGL. DEV. =   1.9 DEGREES          
REMARK 500     DC A   7   O4' -  C1' -  N1  ANGL. DEV. =   4.8 DEGREES          
REMARK 500     DG A   8   C4' -  C3' -  C2' ANGL. DEV. =  -4.3 DEGREES          
REMARK 500     DG A   8   O4' -  C1' -  N9  ANGL. DEV. =   3.4 DEGREES          
REMARK 500     DG A   9   C4' -  C3' -  C2' ANGL. DEV. =  -5.0 DEGREES          
REMARK 500     DG A   9   O4' -  C1' -  N9  ANGL. DEV. =   3.2 DEGREES          
REMARK 500     DG A  10   O4' -  C1' -  N9  ANGL. DEV. =   3.0 DEGREES          
REMARK 500     DC B  11   O4' -  C1' -  N1  ANGL. DEV. =   2.9 DEGREES          
REMARK 500     DG B  14   O4' -  C1' -  N9  ANGL. DEV. =   1.9 DEGREES          
REMARK 500     DC B  16   O4' -  C4' -  C3' ANGL. DEV. =  -2.7 DEGREES          
REMARK 500     DC B  16   O4' -  C1' -  N1  ANGL. DEV. =   2.2 DEGREES          
REMARK 500     DC B  17   O4' -  C1' -  N1  ANGL. DEV. =   2.4 DEGREES          
REMARK 500     DG B  18   O4' -  C4' -  C3' ANGL. DEV. =  -2.6 DEGREES          
REMARK 500     DG B  18   O4' -  C1' -  N9  ANGL. DEV. =   2.8 DEGREES          
REMARK 500     DG B  19   C4' -  C3' -  C2' ANGL. DEV. =  -4.3 DEGREES          
REMARK 500     DG B  19   O4' -  C1' -  N9  ANGL. DEV. =   3.3 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1P4Y   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1P4Z   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1DCW   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1DCV   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZEW   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZEY   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZEZ   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF0   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF1   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF2   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF3   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF4   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF5   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF6   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF7   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF8   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZF9   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFA   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFB   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFC   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFE   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFF   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFG   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFH   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1ZFM   RELATED DB: PDB                                   
DBREF  1ZEX A    1    10  PDB    1ZEX     1ZEX             1     10             
DBREF  1ZEX B   11    20  PDB    1ZEX     1ZEX            11     20             
SEQRES   1 A   10   DC  DC  DC  DG  DG  DC  DC  DG  DG  DG                      
SEQRES   1 B   10   DC  DC  DC  DG  DG  DC  DC  DG  DG  DG                      
FORMUL   3  HOH   *51(H2 O)                                                     
CRYST1   23.956   45.133   44.933  90.00  90.00  90.00 P 21 21 21    8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.041740  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.022160  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.022250        0.00000