PDB Short entry for 6U17 HEADER HYDROLASE 15-AUG-19 6U17 TITLE HUMAN THYMINE DNA GLYCOSYLASE BOUND TO DNA WITH 2'-F-5-CARBOXYL-DC TITLE 2 SUBSTRATE ANALOG COMPND MOL_ID: 1; COMPND 2 MOLECULE: G/T MISMATCH-SPECIFIC THYMINE DNA GLYCOSYLASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: THYMINE-DNA GLYCOSYLASE,HTDG; COMPND 5 EC: 3.2.2.29; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: DNA (28-MER); COMPND 9 CHAIN: C; COMPND 10 ENGINEERED: YES; COMPND 11 MOL_ID: 3; COMPND 12 MOLECULE: DNA (30-MER); COMPND 13 CHAIN: D; COMPND 14 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: TDG; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 MOL_ID: 2; SOURCE 9 SYNTHETIC: YES; SOURCE 10 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 11 ORGANISM_TAXID: 32630; SOURCE 12 MOL_ID: 3; SOURCE 13 SYNTHETIC: YES; SOURCE 14 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 15 ORGANISM_TAXID: 32630 KEYWDS PROTEIN-DNA COMPLEX, HYDROLASE-DNA COMPLEX, DNA BINDING PROTEIN, KEYWDS 2 HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR L.S.PIDUGU,E.POZHARSKI,A.C.DROHAT REVDAT 5 15-NOV-23 6U17 1 REMARK REVDAT 4 11-OCT-23 6U17 1 REMARK REVDAT 3 18-DEC-19 6U17 1 REMARK REVDAT 2 11-DEC-19 6U17 1 JRNL REVDAT 1 20-NOV-19 6U17 0 JRNL AUTH L.S.PIDUGU,Q.DAI,S.S.MALIK,E.POZHARSKI,A.C.DROHAT JRNL TITL EXCISION OF 5-CARBOXYLCYTOSINE BY THYMINE DNA GLYCOSYLASE. JRNL REF J.AM.CHEM.SOC. V. 141 18851 2019 JRNL REFN ESSN 1520-5126 JRNL PMID 31693361 JRNL DOI 10.1021/JACS.9B10376 REMARK 2 REMARK 2 RESOLUTION. 1.55 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : BUSTER 2.10.3 REMARK 3 AUTHORS : BRICOGNE,BLANC,BRANDL,FLENSBURG,KELLER, REMARK 3 : PACIOREK,ROVERSI,SHARFF,SMART,VONRHEIN, REMARK 3 : WOMACK,MATTHEWS,TEN EYCK,TRONRUD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.55 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 43.25 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.1 REMARK 3 NUMBER OF REFLECTIONS : 56810 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) : 0.191 REMARK 3 R VALUE (WORKING SET) : 0.189 REMARK 3 FREE R VALUE : 0.224 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.910 REMARK 3 FREE R VALUE TEST SET COUNT : 2789 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 50 REMARK 3 BIN RESOLUTION RANGE HIGH (ANGSTROMS) : 1.55 REMARK 3 BIN RESOLUTION RANGE LOW (ANGSTROMS) : 1.56 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 82.17 REMARK 3 REFLECTIONS IN BIN (WORKING + TEST SET) : 1137 REMARK 3 BIN R VALUE (WORKING + TEST SET) : 0.2501 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1076 REMARK 3 BIN R VALUE (WORKING SET) : 0.2488 REMARK 3 BIN FREE R VALUE : 0.2744 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.36 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 61 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.000 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1527 REMARK 3 NUCLEIC ACID ATOMS : 1146 REMARK 3 HETEROGEN ATOMS : 4 REMARK 3 SOLVENT ATOMS : 308 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 25.29 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 51.84 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.10100 REMARK 3 B22 (A**2) : 0.13660 REMARK 3 B33 (A**2) : -0.23760 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 5.56910 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.290 REMARK 3 DPI (BLOW EQ-10) BASED ON R VALUE (A) : 0.081 REMARK 3 DPI (BLOW EQ-9) BASED ON FREE R VALUE (A) : 0.084 REMARK 3 DPI (CRUICKSHANK) BASED ON R VALUE (A) : 0.076 REMARK 3 DPI (CRUICKSHANK) BASED ON FREE R VALUE (A) : 0.080 REMARK 3 REMARK 3 REFERENCES: BLOW, D. (2002) ACTA CRYST D58, 792-797 REMARK 3 CRUICKSHANK, D.W.J. (1999) ACTA CRYST D55, 583-601 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.964 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.955 REMARK 3 REMARK 3 NUMBER OF GEOMETRIC FUNCTION TERMS DEFINED : 15 REMARK 3 TERM COUNT WEIGHT FUNCTION. REMARK 3 BOND LENGTHS : 2873 ; 2.000 ; HARMONIC REMARK 3 BOND ANGLES : 4132 ; 2.000 ; HARMONIC REMARK 3 TORSION ANGLES : 823 ; 2.000 ; SINUSOIDAL REMARK 3 TRIGONAL CARBON PLANES : NULL ; NULL ; NULL REMARK 3 GENERAL PLANES : 325 ; 5.000 ; HARMONIC REMARK 3 ISOTROPIC THERMAL FACTORS : 2870 ; 20.000 ; HARMONIC REMARK 3 BAD NON-BONDED CONTACTS : NULL ; NULL ; NULL REMARK 3 IMPROPER TORSIONS : NULL ; NULL ; NULL REMARK 3 PSEUDOROTATION ANGLES : NULL ; NULL ; NULL REMARK 3 CHIRAL IMPROPER TORSION : 373 ; 5.000 ; SEMIHARMONIC REMARK 3 SUM OF OCCUPANCIES : 3 ; 1.000 ; HARMONIC REMARK 3 UTILITY DISTANCES : NULL ; NULL ; NULL REMARK 3 UTILITY ANGLES : NULL ; NULL ; NULL REMARK 3 UTILITY TORSION : NULL ; NULL ; NULL REMARK 3 IDEAL-DIST CONTACT TERM : 3196 ; 4.000 ; SEMIHARMONIC REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 0.98 REMARK 3 PEPTIDE OMEGA TORSION ANGLES (DEGREES) : 3.38 REMARK 3 OTHER TORSION ANGLES (DEGREES) : 20.74 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: { *|* } REMARK 3 ORIGIN FOR THE GROUP (A): 20.2822 -1.1546 30.1390 REMARK 3 T TENSOR REMARK 3 T11: 0.2698 T22: -0.2005 REMARK 3 T33: -0.3167 T12: 0.0005 REMARK 3 T13: -0.0432 T23: 0.0022 REMARK 3 L TENSOR REMARK 3 L11: 0.9822 L22: 1.9759 REMARK 3 L33: 2.2055 L12: -0.0817 REMARK 3 L13: 1.2400 L23: -0.0224 REMARK 3 S TENSOR REMARK 3 S11: -0.1023 S12: 0.0916 S13: 0.0276 REMARK 3 S21: -0.0854 S22: -0.0256 S23: 0.0115 REMARK 3 S31: -0.1897 S32: 0.1549 S33: 0.1279 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 6U17 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-AUG-19. REMARK 100 THE DEPOSITION ID IS D_1000243696. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 26-NOV-17 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL12-2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97946 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS3 S 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : AIMLESS 0.7.4 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 56857 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.550 REMARK 200 RESOLUTION RANGE LOW (A) : 81.270 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.5 REMARK 200 DATA REDUNDANCY : 21.70 REMARK 200 R MERGE (I) : 0.14500 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 9.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.55 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.58 REMARK 200 COMPLETENESS FOR SHELL (%) : 86.7 REMARK 200 DATA REDUNDANCY IN SHELL : 17.30 REMARK 200 R MERGE FOR SHELL (I) : 5.33600 REMARK 200 R SYM FOR SHELL (I) : NULL 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: PHASER REMARK 200 STARTING MODEL: 5T2W REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.72 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.35 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG3350, SODIUM ACETATE, AMMONIUM REMARK 280 ACETATE, PH 6.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 295K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z 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 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 48.43500 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 26.38000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 48.43500 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 26.38000 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 5260 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 18330 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -23.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, C, D 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 SER A 82 REMARK 465 LYS A 83 REMARK 465 LYS A 84 REMARK 465 SER A 85 REMARK 465 GLY A 86 REMARK 465 LYS A 87 REMARK 465 SER A 88 REMARK 465 ALA A 89 REMARK 465 LYS A 90 REMARK 465 SER A 91 REMARK 465 LYS A 92 REMARK 465 GLU A 93 REMARK 465 LYS A 94 REMARK 465 GLN A 95 REMARK 465 GLU A 96 REMARK 465 LYS A 97 REMARK 465 ILE A 98 REMARK 465 THR A 99 REMARK 465 ASP A 100 REMARK 465 THR A 101 REMARK 465 PHE A 102 REMARK 465 LYS A 103 REMARK 465 VAL A 104 REMARK 465 LYS A 105 REMARK 465 ARG A 106 REMARK 465 ARG A 304 REMARK 465 ASN A 305 REMARK 465 MET A 306 REMARK 465 ASP A 307 REMARK 465 VAL A 308 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 LYS A 107 CG CD CE NZ REMARK 470 GLU A 116 CG CD OE1 OE2 REMARK 470 GLU A 170 CG CD OE1 OE2 REMARK 470 LYS A 184 CG CD CE NZ REMARK 470 LYS A 201 CE NZ REMARK 470 LYS A 206 CD CE NZ REMARK 470 GLN A 217 CD OE1 NE2 REMARK 470 GLU A 236 CD OE1 OE2 REMARK 470 LYS A 240 CE NZ REMARK 470 LYS A 246 CE NZ REMARK 470 LYS A 248 CG CD CE NZ REMARK 470 ASN A 249 CG OD1 ND2 REMARK 470 ASP A 261 CG OD1 OD2 REMARK 470 LYS A 291 CE NZ REMARK 470 GLN A 298 OE1 NE2 REMARK 470 LYS A 300 CE NZ REMARK 470 ILE A 302 CG1 CG2 CD1 REMARK 470 GLU A 303 CD OE1 OE2 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 C 4 O4' - C1' - N1 ANGL. DEV. = 2.3 DEGREES REMARK 500 DC C 24 O4' - C1' - N1 ANGL. DEV. = 1.9 DEGREES REMARK 500 DT D 4 O4' - C1' - N1 ANGL. DEV. = 2.1 DEGREES REMARK 500 DC D 8 O4' - C1' - N1 ANGL. DEV. = 2.1 DEGREES REMARK 500 DG D 23 O4' - C1' - N9 ANGL. DEV. = 2.4 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 A 669 DISTANCE = 6.28 ANGSTROMS REMARK 525 HOH A 670 DISTANCE = 6.57 ANGSTROMS REMARK 525 HOH A 671 DISTANCE = 6.65 ANGSTROMS REMARK 525 HOH A 672 DISTANCE = 6.65 ANGSTROMS REMARK 525 HOH A 673 DISTANCE = 6.91 ANGSTROMS REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue ACT A 401 DBREF 6U17 A 82 308 UNP Q13569 TDG_HUMAN 82 308 DBREF 6U17 C 1 28 PDB 6U17 6U17 1 28 DBREF 6U17 D 1 28 PDB 6U17 6U17 1 28 SEQRES 1 A 227 SER LYS LYS SER GLY LYS SER ALA LYS SER LYS GLU LYS SEQRES 2 A 227 GLN GLU LYS ILE THR ASP THR PHE LYS VAL LYS ARG LYS SEQRES 3 A 227 VAL ASP ARG PHE ASN GLY VAL SER GLU ALA GLU LEU LEU SEQRES 4 A 227 THR LYS THR LEU PRO ASP ILE LEU THR PHE ASN LEU ASP SEQRES 5 A 227 ILE VAL ILE ILE GLY ILE ASN PRO GLY LEU MET ALA ALA SEQRES 6 A 227 TYR LYS GLY HIS HIS TYR PRO GLY PRO GLY ASN HIS PHE SEQRES 7 A 227 TRP LYS CYS LEU PHE MET SER GLY LEU SER GLU VAL GLN SEQRES 8 A 227 LEU ASN HIS MET ASP ASP HIS THR LEU PRO GLY LYS TYR SEQRES 9 A 227 GLY ILE GLY PHE THR ASN MET VAL GLU ARG THR THR PRO SEQRES 10 A 227 GLY SER LYS ASP LEU SER SER LYS GLU PHE ARG GLU GLY SEQRES 11 A 227 GLY ARG ILE LEU VAL GLN LYS LEU GLN LYS TYR GLN PRO SEQRES 12 A 227 ARG ILE ALA VAL PHE ASN GLY LYS CYS ILE TYR GLU ILE SEQRES 13 A 227 PHE SER LYS GLU VAL PHE GLY VAL LYS VAL LYS ASN LEU SEQRES 14 A 227 GLU PHE GLY LEU GLN PRO HIS LYS ILE PRO ASP THR GLU SEQRES 15 A 227 THR LEU CYS TYR VAL MET PRO SER SER SER ALA ARG CSO SEQRES 16 A 227 ALA GLN PHE PRO ARG ALA GLN ASP LYS VAL HIS TYR TYR SEQRES 17 A 227 ILE LYS LEU LYS ASP LEU ARG ASP GLN LEU LYS GLY ILE SEQRES 18 A 227 GLU ARG ASN MET ASP VAL SEQRES 1 C 28 DC DA DG DC DT DC DT DG DT DA DC DG DT SEQRES 2 C 28 DG DA DG DC DG DA DT DG DG DA DC DA DG SEQRES 3 C 28 DC DT SEQRES 1 D 28 DA DG DC DT DG DT DC DC DA DT DC DG DC SEQRES 2 D 28 DT DC DA 1FC DG DT DA DC DA DG DA DG DC SEQRES 3 D 28 DT DG MODRES 6U17 CSO A 276 CYS MODIFIED RESIDUE HET CSO A 276 7 HET 1FC D 17 23 HET ACT A 401 4 HETNAM CSO S-HYDROXYCYSTEINE HETNAM 1FC 4-AMINO-1-(2-DEOXY-2-FLUORO-5-O-PHOSPHONO-BETA-D- HETNAM 2 1FC ARABINOFURANOSYL)-2-OXO-1,2-DIHYDROPYRIMIDINE-5- HETNAM 3 1FC CARBOXYLIC ACID HETNAM ACT ACETATE ION FORMUL 1 CSO C3 H7 N O3 S FORMUL 3 1FC C10 H13 F N3 O9 P FORMUL 4 ACT C2 H3 O2 1- FORMUL 5 HOH *308(H2 O) HELIX 1 AA1 SER A 115 THR A 121 1 7 HELIX 2 AA2 GLY A 142 GLY A 149 1 8 HELIX 3 AA3 HIS A 158 SER A 166 1 9 HELIX 4 AA4 ASN A 174 HIS A 179 5 6 HELIX 5 AA5 THR A 180 GLY A 186 1 7 HELIX 6 AA6 GLY A 199 LEU A 203 5 5 HELIX 7 AA7 SER A 204 GLN A 223 1 20 HELIX 8 AA8 GLY A 231 PHE A 243 1 13 HELIX 9 AA9 ARG A 281 ASP A 284 5 4 HELIX 10 AB1 LYS A 285 GLU A 303 1 19 SHEET 1 AA1 5 ILE A 187 ASN A 191 0 SHEET 2 AA1 5 ILE A 134 GLY A 138 1 N ILE A 136 O GLY A 188 SHEET 3 AA1 5 ILE A 226 ASN A 230 1 O VAL A 228 N ILE A 137 SHEET 4 AA1 5 LEU A 265 MET A 269 1 O LEU A 265 N ALA A 227 SHEET 5 AA1 5 GLY A 253 LEU A 254 -1 N GLY A 253 O VAL A 268 LINK C ARG A 275 N ACSO A 276 1555 1555 1.36 LINK C ACSO A 276 N ALA A 277 1555 1555 1.32 LINK O3' DA D 16 P 1FC D 17 1555 1555 1.58 LINK O3' 1FC D 17 P DG D 18 1555 1555 1.61 SITE 1 AC1 5 ARG A 110 PHE A 111 TYR A 147 ARG A 281 SITE 2 AC1 5 DG C 14 CRYST1 96.870 52.760 81.620 90.00 95.25 90.00 C 1 2 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 0.010323 0.000000 0.000949 0.00000 SCALE2 0.000000 0.018954 0.000000 0.00000 SCALE3 0.000000 0.000000 0.012304 0.00000