HEADER DNA 09-MAR-09 3GJL TITLE CRYSTAL STRUCTURE OF A DNA DUPLEX CONTAINING 7,8- TITLE 2 DIHYDROPYRIDOL[2,3-D]PYRIMIDIN-2-ONE COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-D(*CP*GP*CP*GP*AP*A)-3'; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: 5'-D(P*TP*TP*(B7C)P*GP*CP*G)-3'; COMPND 7 CHAIN: B; COMPND 8 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 MOL_ID: 2; SOURCE 4 SYNTHETIC: YES KEYWDS DNA, DUPLEX, BICYCLIC CYTOSINE, 7, 8-DIHYDROPYRIDOL[2, 3- KEYWDS 2 D]PYRIMIDIN-2-ONE EXPDTA X-RAY DIFFRACTION AUTHOR A.TAKENAKA,E.C.M.JUAN,S.SHIMIZU,T.HARAGUCHI,M.XIAO,T.KUROSE, AUTHOR 2 A.OHKUBO,M.SEKINE,T.SHIBATA,C.L.MILLINGTON,D.M.WILLIAMS REVDAT 1 31-MAR-10 3GJL 0 JRNL AUTH A.TAKENAKA,E.C.M.JUAN,S.SHIMIZU,T.HARAGUCHI,M.XIAO, JRNL AUTH 2 T.KUROSE,A.OHKUBO,M.SEKINE,T.SHIBATA, JRNL AUTH 3 C.M.MILLINGTON,D.M.WILLIAM JRNL TITL INSIGHTS INTO THE STABILIZING CONTRIBUTIONS OF JRNL TITL 2 BICYCLIC CYTOSINE ANALOGUES: CRYSTAL STRUCTURES OF JRNL TITL 3 DNA DUPLEXES CONTAINING JRNL TITL 4 7,8-DIHYDROPYRIDOL[2,3-D]PYRIMIDIN-2-ONE JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.92 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0019 REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.92 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 22.34 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.3 REMARK 3 NUMBER OF REFLECTIONS : 3165 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) : 0.227 REMARK 3 R VALUE (WORKING SET) : 0.225 REMARK 3 FREE R VALUE : 0.264 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.400 REMARK 3 FREE R VALUE TEST SET COUNT : 139 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) : 1.92 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.97 REMARK 3 REFLECTION IN BIN (WORKING SET) : 206 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.00 REMARK 3 BIN R VALUE (WORKING SET) : 0.2550 REMARK 3 BIN FREE R VALUE SET COUNT : 11 REMARK 3 BIN FREE R VALUE : 0.4130 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 0 REMARK 3 NUCLEIC ACID ATOMS : 246 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 42 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 25.34 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.06000 REMARK 3 B22 (A**2) : -0.06000 REMARK 3 B33 (A**2) : 0.09000 REMARK 3 B12 (A**2) : -0.03000 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): 0.162 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.151 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.094 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 3.325 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.952 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.937 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 276 ; 0.013 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 423 ; 2.209 ; 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): 46 ; 0.086 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 127 ; 0.011 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 71 ; 0.154 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 163 ; 0.312 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 12 ; 0.186 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): 1 ; 0.443 ; 0.200 REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 27 ; 0.447 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 10 ; 0.062 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): 3 ; 0.457 ; 0.200 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 SIDE-CHAIN BOND REFINED ATOMS (A**2): 333 ; 1.798 ; 3.000 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 423 ; 2.407 ; 4.500 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 : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE REMARK 3 RIDING POSITIONS REMARK 4 REMARK 4 3GJL COMPLIES WITH FORMAT V. 3.20, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 08-MAY-09. REMARK 100 THE RCSB ID CODE IS RCSB051941. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 17-DEC-06 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : PHOTON FACTORY REMARK 200 BEAMLINE : AR-NW12A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.00 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 270 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 3233 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.920 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 (%) : 99.4 REMARK 200 DATA REDUNDANCY : 20.700 REMARK 200 R MERGE (I) : 0.06400 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 91.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.92 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.99 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 21.40 REMARK 200 R MERGE FOR SHELL (I) : 0.29100 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 15.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: 1EHV REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 55.08 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.74 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 25MM SODIUM CACODYLATE (PH7.0), 6MM REMARK 280 SPERMINE, TETRAHYDROCHLORIDE, 50MM NACL, 5% MPD , VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 1 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 -Y,-X,-Z+1/3 REMARK 290 5555 -X+Y,Y,-Z+2/3 REMARK 290 6555 X,X-Y,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 65.97200 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 32.98600 REMARK 290 SMTRY1 4 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 32.98600 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 65.97200 REMARK 290 SMTRY1 6 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 460 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 2660 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -3.0 KCAL/MOL 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 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 NA NA B 1 LIES ON A SPECIAL POSITION. REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O3' DA A 6 P DT B 7 5555 1.65 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 DG A 2 O4' - C1' - N9 ANGL. DEV. = -6.5 DEGREES REMARK 500 DG A 4 O4' - C1' - N9 ANGL. DEV. = 2.0 DEGREES REMARK 500 DC B 11 O4' - C1' - N1 ANGL. DEV. = 2.5 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH B 3 DISTANCE = 6.04 ANGSTROMS REMARK 525 HOH B 16 DISTANCE = 5.80 ANGSTROMS REMARK 525 HOH A 17 DISTANCE = 6.40 ANGSTROMS REMARK 525 HOH B 17 DISTANCE = 5.08 ANGSTROMS REMARK 525 HOH A 27 DISTANCE = 6.19 ANGSTROMS REMARK 525 HOH B 24 DISTANCE = 5.68 ANGSTROMS REMARK 525 HOH A 37 DISTANCE = 5.03 ANGSTROMS REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA B 1 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3GJH RELATED DB: PDB REMARK 900 RELATED ID: 3GJJ RELATED DB: PDB REMARK 900 RELATED ID: 3GJK RELATED DB: PDB DBREF 3GJL A 1 6 PDB 3GJL 3GJL 1 6 DBREF 3GJL B 7 12 PDB 3GJL 3GJL 7 12 SEQRES 1 A 6 DC DG DC DG DA DA SEQRES 1 B 6 DT DT B7C DG DC DG MODRES 3GJL B7C B 9 DC HET B7C B 9 22 HET NA B 1 1 HETNAM B7C 3-(2-DEOXY-5-O-PHOSPHONO-BETA-D-ERYTHRO- HETNAM 2 B7C PENTOFURANOSYL)-7,8-DIHYDROPYRIDO[2,3-D]PYRIMIDIN- HETNAM 3 B7C 2(3H)-ONE HETNAM NA SODIUM ION FORMUL 2 B7C C12 H16 N3 O7 P FORMUL 3 NA NA 1+ FORMUL 4 HOH *42(H2 O) LINK O3' DT B 8 P B7C B 9 1555 1555 1.59 LINK O3' B7C B 9 P DG B 10 1555 1555 1.61 LINK OP1 DG B 12 NA NA B 1 1555 1555 1.91 SITE 1 AC1 3 DC A 1 DC B 11 DG B 12 CRYST1 26.477 26.477 98.958 90.00 90.00 120.00 P 32 1 2 6 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 0.037769 0.021806 0.000000 0.00000 SCALE2 0.000000 0.043611 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010105 0.00000 MASTER 319 0 2 0 0 0 1 6 0 0 0 2 END