HEADER    DNA                                     24-MAR-05   1Z7I              
TITLE     2'-ME-SE DERIVITATION OF A-DNA OCTAMER G(UMSE)GTACAC                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 5'-D(*GP*(UMS)P*GP*TP*AP*CP*AP*C)-3';                      
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: 2'-SELENIUM A-DNA DUPLEX;                                  
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 OTHER_DETAILS: SOLID PHASE SYNTHESIS VIA PHOSPHORAMIDITE CHEMISTRY   
KEYWDS    2'-METHYLSELENO-URIDINE, SE-DNA, SELENIUM DERIVATIZATION, DNA         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Z.HUANG,N.CARRASCO,J.JIANG                                            
REVDAT   4   14-FEB-24 1Z7I    1       REMARK LINK   ATOM                       
REVDAT   3   24-FEB-09 1Z7I    1       VERSN                                    
REVDAT   2   30-SEP-08 1Z7I    1       JRNL                                     
REVDAT   1   05-APR-05 1Z7I    0                                                
JRNL        AUTH   J.JIANG,J.SHENG,N.CARRASCO,Z.HUANG                           
JRNL        TITL   SELENIUM DERIVATIZATION OF NUCLEIC ACIDS FOR                 
JRNL        TITL 2 CRYSTALLOGRAPHY.                                             
JRNL        REF    NUCLEIC ACIDS RES.            V.  35   477 2007              
JRNL        REFN                   ISSN 0305-1048                               
JRNL        PMID   17169989                                                     
JRNL        DOI    10.1093/NAR/GKL1070                                          
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.28 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : DNA-RNA_UMS.PAR                                 
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.28                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.81                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 450767.650                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 89.3                           
REMARK   3   NUMBER OF REFLECTIONS             : 5275                           
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) : 0.177                           
REMARK   3   FREE R VALUE                     : 0.200                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 11.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 581                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.008                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.28                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.36                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 66.60                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 552                          
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2370                       
REMARK   3   BIN FREE R VALUE                    : 0.2310                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 12.80                        
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 81                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.026                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 0                                       
REMARK   3   NUCLEIC ACID ATOMS       : 162                                     
REMARK   3   HETEROGEN ATOMS          : 3                                       
REMARK   3   SOLVENT ATOMS            : 44                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 14.90                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 15.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.70000                                              
REMARK   3    B22 (A**2) : 0.70000                                              
REMARK   3    B33 (A**2) : -1.41000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.13                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.11                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.15                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.10                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.012                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.800                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 33.10                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 2.070                           
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) : 1.230 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 1.500 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 1.280 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 1.920 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.30                                                 
REMARK   3   BSOL        : 22.22                                                
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  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  4  : DNA-RNA_UMS.PAR                                
REMARK   3  PARAMETER FILE  5  : CAC.PAR                                        
REMARK   3  PARAMETER FILE  6  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : DNA-RNA.TOP                                    
REMARK   3  TOPOLOGY FILE  3   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  4   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  5   : UMS.TOP                                        
REMARK   3  TOPOLOGY FILE  6   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1Z7I COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 28-MAR-05.                  
REMARK 100 THE DEPOSITION ID IS D_1000032395.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 13-FEB-04                          
REMARK 200  TEMPERATURE           (KELVIN) : 273                                
REMARK 200  PH                             : 6.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X12C                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.979, 0.9794, 0.940, 0.920        
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : BRANDEIS - B4                      
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : CBASS                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 6029                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.280                              
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     (%) : 95.3                               
REMARK 200  DATA REDUNDANCY                : 12.40                              
REMARK 200  R MERGE                    (I) : 0.08000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.8000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.28                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.30                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 70.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: MAD                                            
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD, MOLECULAR REPLACEMENT   
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 59.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.01                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 10% V/V MPD, 40 MM SODIUM CACODYLATE     
REMARK 280  (PH 6.0), 12 MM SPERMINE TETRA-HCL, 80 MM SODIUM CHLORIDE, 20 MM    
REMARK 280  MAGNESIUM CHLORIDE, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE      
REMARK 280  298K                                                                
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2                        
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y+1/2,X+1/2,Z+3/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+1/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+3/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+1/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z+1/2                                            
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       11.96750            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       21.03800            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       21.03800            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       17.95125            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       21.03800            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       21.03800            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000        5.98375            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       21.03800            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       21.03800            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       17.95125            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       21.03800            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       21.03800            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        5.98375            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       11.96750            
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                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A  82  LIES ON A SPECIAL POSITION.                          
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     DG A   1   O4' -  C1' -  N9  ANGL. DEV. =  -6.1 DEGREES          
REMARK 500     DG A   3   O4' -  C1' -  N9  ANGL. DEV. =  -5.7 DEGREES          
REMARK 500     DT A   4   O4' -  C1' -  N1  ANGL. DEV. =  -6.0 DEGREES          
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 A   8         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 610                                                                      
REMARK 610 MISSING HETEROATOM                                                   
REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 610 I=INSERTION CODE):                                                   
REMARK 610   M RES C SSEQI                                                      
REMARK 610     SPM A   50                                                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SPM A 50                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1DNS   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1D78   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1D79   RELATED DB: PDB                                   
DBREF  1Z7I A    1     8  PDB    1Z7I     1Z7I             1      8             
SEQRES   1 A    8   DG UMS  DG  DT  DA  DC  DA  DC                              
MODRES 1Z7I UMS A    2   DU                                                     
HET    UMS  A   2      21                                                       
HET    SPM  A  50       3                                                       
HETNAM     UMS 2'-METHYLSELENYL-2'-DEOXYURIDINE-5'-PHOSPHATE                    
HETNAM     SPM SPERMINE                                                         
FORMUL   1  UMS    C10 H15 N2 O8 P SE                                           
FORMUL   2  SPM    C10 H26 N4                                                   
FORMUL   3  HOH   *44(H2 O)                                                     
LINK         O3'  DG A   1                 P   UMS A   2     1555   1555  1.59  
LINK         O3' UMS A   2                 P    DG A   3     1555   1555  1.58  
SITE     1 AC1  5  DC A   6   DA A   7  HOH A  52  HOH A  61                    
SITE     2 AC1  5 HOH A  78                                                     
CRYST1   42.076   42.076   23.935  90.00  90.00  90.00 P 43 21 2     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      0.023767  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.023767  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.041780        0.00000