HEADER DNA BINDING PROTEIN/DNA 02-OCT-12 4HDU TITLE CRYSTAL STRUCTURE OF S. POMBE ATL1 IN COMPLEX WITH DAMAGED DNA TITLE 2 CONTAINING 2-AMINOPURINE COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALKYLTRANSFERASE-LIKE PROTEIN 1; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ATL1; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: 5'-D(*GP*CP*CP*AP*TP*GP*(2PR)P*CP*TP*AP*GP*TP*A)-3'; COMPND 8 CHAIN: B; COMPND 9 ENGINEERED: YES; COMPND 10 MOL_ID: 3; COMPND 11 MOLECULE: 5'-D(*CP*TP*AP*CP*TP*AP*GP*CP*CP*AP*TP*GP*G)-3'; COMPND 12 CHAIN: C; COMPND 13 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SCHIZOSACCHAROMYCES POMBE; SOURCE 3 ORGANISM_COMMON: FISSION YEAST; SOURCE 4 ORGANISM_TAXID: 4896; SOURCE 5 GENE: ATL1, SPAC1250.04C; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 MOL_ID: 2; SOURCE 9 SYNTHETIC: YES; SOURCE 10 MOL_ID: 3; SOURCE 11 SYNTHETIC: YES KEYWDS ALKYLTRANSFERASE, DNA REPAIR, NUCLEOTIDE EXCISION REPAIR, NER, BASE KEYWDS 2 REPAIR, DNA DAMAGE, GUANINE, ALKYLATION, DNA BINDING PROTEIN-DNA KEYWDS 3 COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.L.TUBBS,J.A.TAINER REVDAT 2 20-SEP-23 4HDU 1 SEQADV LINK REVDAT 1 26-DEC-12 4HDU 0 JRNL AUTH O.J.WILKINSON,V.LATYPOV,J.L.TUBBS,C.L.MILLINGTON,R.MORITA, JRNL AUTH 2 H.BLACKBURN,A.MARRIOTT,G.MCGOWN,M.THORNCROFT,A.J.WATSON, JRNL AUTH 3 B.A.CONNOLLY,J.A.GRASBY,R.MASUI,C.A.HUNTER,J.A.TAINER, JRNL AUTH 4 G.P.MARGISON,D.M.WILLIAMS JRNL TITL ALKYLTRANSFERASE-LIKE PROTEIN (ATL1) DISTINGUISHES ALKYLATED JRNL TITL 2 GUANINES FOR DNA REPAIR USING CATION-{PI} INTERACTIONS. JRNL REF PROC.NATL.ACAD.SCI.USA V. 109 18755 2012 JRNL REFN ISSN 0027-8424 JRNL PMID 23112169 JRNL DOI 10.1073/PNAS.1209451109 REMARK 2 REMARK 2 RESOLUTION. 2.85 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE: 1.6.1_357) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.85 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 34.89 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 0.210 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.9 REMARK 3 NUMBER OF REFLECTIONS : 6352 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.219 REMARK 3 R VALUE (WORKING SET) : 0.213 REMARK 3 FREE R VALUE : 0.267 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.080 REMARK 3 FREE R VALUE TEST SET COUNT : 640 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 34.8930 - 4.8667 0.99 1277 143 0.2012 0.2335 REMARK 3 2 4.8667 - 3.8645 1.00 1164 130 0.1936 0.2661 REMARK 3 3 3.8645 - 3.3764 0.99 1124 127 0.2280 0.2680 REMARK 3 4 3.3764 - 3.0679 0.98 1106 124 0.2178 0.3185 REMARK 3 5 3.0679 - 2.8480 0.93 1041 116 0.2809 0.3331 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : 0.33 REMARK 3 B_SOL : 54.58 REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.400 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 25.650 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 8.40430 REMARK 3 B22 (A**2) : 8.40430 REMARK 3 B33 (A**2) : -16.80870 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.006 1541 REMARK 3 ANGLE : 0.780 2153 REMARK 3 CHIRALITY : 0.039 227 REMARK 3 PLANARITY : 0.002 188 REMARK 3 DIHEDRAL : 22.584 616 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 4HDU COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-OCT-12. REMARK 100 THE DEPOSITION ID IS D_1000075341. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 21-MAY-11 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.4 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL11-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97945 REMARK 200 MONOCHROMATOR : SIDE SCATTERING BENT CUBE-ROOT I REMARK 200 -BEAM SINGLE CRYSTAL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARMOSAIC 325 MM CCD REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 6482 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.848 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 200 DATA REDUNDANCY : 19.90 REMARK 200 R MERGE (I) : 0.04800 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 83.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.85 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.95 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 20.90 REMARK 200 R MERGE FOR SHELL (I) : 0.36900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 12.20 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: PDB ENTRY 3GVA REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 56.56 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.83 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20% MPEG2000, 0.5 M SODIUM FORMATE, REMARK 280 200 MM IMIDAZOLE-MALATE, 30% XYLOSE, PH 5.4, VAPOR DIFFUSION, REMARK 280 HANGING DROP, TEMPERATURE 288K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+5/6 REMARK 290 6555 X-Y,X,Z+1/6 REMARK 290 7555 Y,X,-Z+1/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+2/3 REMARK 290 10555 -Y,-X,-Z+5/6 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+1/6 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 78.49600 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 156.99200 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 117.74400 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 196.24000 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 39.24800 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 78.49600 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 156.99200 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 196.24000 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 117.74400 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 0.000000 0.000000 -1.000000 39.24800 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 3550 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 9490 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -10.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 GLY A 109 REMARK 465 SER A 110 REMARK 465 HIS A 111 REMARK 465 HIS A 112 REMARK 465 HIS A 113 REMARK 465 HIS A 114 REMARK 465 HIS A 115 REMARK 465 HIS A 116 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 2PR B 7 O3' - P - OP2 ANGL. DEV. = -35.6 DEGREES REMARK 500 2PR B 7 O3' - P - OP1 ANGL. DEV. = 31.4 DEGREES REMARK 500 DG B 11 O4' - C1' - N9 ANGL. DEV. = 3.4 DEGREES REMARK 500 DT B 12 O4' - C1' - N1 ANGL. DEV. = 1.9 DEGREES REMARK 500 DA B 13 O4' - C1' - N9 ANGL. DEV. = 1.9 DEGREES REMARK 500 DG C 25 O4' - C1' - N9 ANGL. DEV. = 3.3 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 TYR A 37 30.35 -94.07 REMARK 500 LEU A 94 50.47 70.61 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 4HDV RELATED DB: PDB DBREF 4HDU A 1 108 UNP Q9UTN9 ATL1_SCHPO 1 108 DBREF 4HDU B 1 13 PDB 4HDU 4HDU 1 13 DBREF 4HDU C 14 26 PDB 4HDU 4HDU 14 26 SEQADV 4HDU GLY A 109 UNP Q9UTN9 EXPRESSION TAG SEQADV 4HDU SER A 110 UNP Q9UTN9 EXPRESSION TAG SEQADV 4HDU HIS A 111 UNP Q9UTN9 EXPRESSION TAG SEQADV 4HDU HIS A 112 UNP Q9UTN9 EXPRESSION TAG SEQADV 4HDU HIS A 113 UNP Q9UTN9 EXPRESSION TAG SEQADV 4HDU HIS A 114 UNP Q9UTN9 EXPRESSION TAG SEQADV 4HDU HIS A 115 UNP Q9UTN9 EXPRESSION TAG SEQADV 4HDU HIS A 116 UNP Q9UTN9 EXPRESSION TAG SEQRES 1 A 116 MET ARG MET ASP GLU PHE TYR THR LYS VAL TYR ASP ALA SEQRES 2 A 116 VAL CYS GLU ILE PRO TYR GLY LYS VAL SER THR TYR GLY SEQRES 3 A 116 GLU ILE ALA ARG TYR VAL GLY MET PRO SER TYR ALA ARG SEQRES 4 A 116 GLN VAL GLY GLN ALA MET LYS HIS LEU HIS PRO GLU THR SEQRES 5 A 116 HIS VAL PRO TRP HIS ARG VAL ILE ASN SER ARG GLY THR SEQRES 6 A 116 ILE SER LYS ARG ASP ILE SER ALA GLY GLU GLN ARG GLN SEQRES 7 A 116 LYS ASP ARG LEU GLU GLU GLU GLY VAL GLU ILE TYR GLN SEQRES 8 A 116 THR SER LEU GLY GLU TYR LYS LEU ASN LEU PRO GLU TYR SEQRES 9 A 116 MET TRP LYS PRO GLY SER HIS HIS HIS HIS HIS HIS SEQRES 1 B 13 DG DC DC DA DT DG 2PR DC DT DA DG DT DA SEQRES 1 C 13 DC DT DA DC DT DA DG DC DC DA DT DG DG MODRES 4HDU 2PR B 7 DG HET 2PR B 7 21 HETNAM 2PR 2-AMINO-9-[2-DEOXYRIBOFURANOSYL]-9H-PURINE-5'- HETNAM 2 2PR MONOPHOSPHATE HETSYN 2PR 2-AMINOPURINE-2'-DEOXYRIBO-5'-MONOPHOSPHATE FORMUL 2 2PR C10 H14 N5 O6 P HELIX 1 1 ARG A 2 ILE A 17 1 16 HELIX 2 2 TYR A 25 VAL A 32 1 8 HELIX 3 3 TYR A 37 LEU A 48 1 12 HELIX 4 4 PRO A 55 HIS A 57 5 3 HELIX 5 5 ILE A 71 GLU A 85 1 15 HELIX 6 6 ASN A 100 MET A 105 1 6 SHEET 1 A 2 SER A 23 THR A 24 0 SHEET 2 A 2 VAL A 59 ILE A 60 1 O ILE A 60 N SER A 23 SHEET 1 B 2 TYR A 90 GLN A 91 0 SHEET 2 B 2 TYR A 97 LYS A 98 -1 O LYS A 98 N TYR A 90 LINK O3' DG B 6 P 2PR B 7 1555 1555 1.61 LINK O3' 2PR B 7 P DC B 8 1555 1555 1.61 CRYST1 59.978 59.978 235.488 90.00 90.00 120.00 P 61 2 2 12 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 0.016673 0.009626 0.000000 0.00000 SCALE2 0.000000 0.019252 0.000000 0.00000 SCALE3 0.000000 0.000000 0.004247 0.00000