HEADER TRANSFERASE 25-OCT-07 3B5B TITLE CRYSTAL STRUCTURE OF THE THYMIDYLATE SYNTHASE K48Q COMPND MOL_ID: 1; COMPND 2 MOLECULE: THYMIDYLATE SYNTHASE; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: TS, TSASE; COMPND 5 EC: 2.1.1.45; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI BL21; SOURCE 3 ORGANISM_TAXID: 511693; SOURCE 4 STRAIN: BL21; SOURCE 5 GENE: THYA; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 511693; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET17B KEYWDS THYMIDYLATE SYNTHASE, 5-NO2-DUMP, SUBSTRATE ANOLOGUE, KEYWDS 2 METHYLTRANSFERASE, NUCLEOTIDE BIOSYNTHESIS, REPRESSOR, RNA-BINDING, KEYWDS 3 TRANSFERASE, TRANSLATION REGULATION EXPDTA X-RAY DIFFRACTION AUTHOR R.R.SOTELO-MUNDO,R.ARREOLA,F.MALEY,W.R.MONTFORT REVDAT 9 30-AUG-23 3B5B 1 REMARK REVDAT 8 20-OCT-21 3B5B 1 REMARK SEQADV LINK REVDAT 7 24-JUL-19 3B5B 1 REMARK LINK REVDAT 6 18-APR-18 3B5B 1 REMARK REVDAT 5 25-OCT-17 3B5B 1 REMARK REVDAT 4 13-JUL-11 3B5B 1 VERSN REVDAT 3 24-FEB-09 3B5B 1 VERSN REVDAT 2 12-AUG-08 3B5B 1 JRNL REVDAT 1 25-DEC-07 3B5B 0 JRNL AUTH A.A.ARVIZU-FLORES,R.SUGICH-MIRANDA,R.ARREOLA, JRNL AUTH 2 K.D.GARCIA-OROZCO,E.F.VELAZQUEZ-CONTRERAS,W.R.MONTFORT, JRNL AUTH 3 F.MALEY,R.R.SOTELO-MUNDO JRNL TITL ROLE OF AN INVARIANT LYSINE RESIDUE IN FOLATE BINDING ON JRNL TITL 2 ESCHERICHIA COLI THYMIDYLATE SYNTHASE: CALORIMETRIC AND JRNL TITL 3 CRYSTALLOGRAPHIC ANALYSIS OF THE K48Q MUTANT. JRNL REF INT.J.BIOCHEM.CELL BIOL. V. 40 2206 2008 JRNL REFN ISSN 1357-2725 JRNL PMID 18403248 JRNL DOI 10.1016/J.BIOCEL.2008.02.025 REMARK 2 REMARK 2 RESOLUTION. 2.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.2 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 : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 25.55 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1987704.625 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 97.4 REMARK 3 NUMBER OF REFLECTIONS : 16931 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) : 0.193 REMARK 3 FREE R VALUE : 0.234 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.900 REMARK 3 FREE R VALUE TEST SET COUNT : 837 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) : 2.70 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.87 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 92.70 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2722 REMARK 3 BIN R VALUE (WORKING SET) : 0.3000 REMARK 3 BIN FREE R VALUE : 0.3500 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.30 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 131 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.031 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 4300 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 52 REMARK 3 SOLVENT ATOMS : 52 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 44.35 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.80 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -2.38000 REMARK 3 B22 (A**2) : -2.38000 REMARK 3 B33 (A**2) : 4.75000 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) : 0.30 REMARK 3 ESD FROM SIGMAA (A) : 0.39 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) : 0.39 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.49 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.400 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.70 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.740 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) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.35 REMARK 3 BSOL : 35.40 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 : LIGAND.PAR REMARK 3 PARAMETER FILE 3 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : LIGAND.TOP REMARK 3 TOPOLOGY FILE 3 : WATER.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: BULK SOLVENT MODEL USED REMARK 4 REMARK 4 3B5B COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-NOV-07. REMARK 100 THE DEPOSITION ID IS D_1000045097. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 22-NOV-99 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 7.5 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 : ENRAF-NONIUS FR571 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : DIFFRACTOMETER REMARK 200 DETECTOR MANUFACTURER : ENRAF-NONIUS FAST REMARK 200 INTENSITY-INTEGRATION SOFTWARE : PROCOR REMARK 200 DATA SCALING SOFTWARE : AGROVATA, ROTAVATA, TRUNCATE, REMARK 200 SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 19482 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.600 REMARK 200 RESOLUTION RANGE LOW (A) : 35.520 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 4.800 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.09200 REMARK 200 FOR THE DATA SET : 12.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.60 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.74 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 3.90 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.40000 REMARK 200 FOR SHELL : 3.800 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY: 1FFL, 1FWM REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 52.75 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.60 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20 MM POTASSIUM PHOSPHATE BUFFER, 4 MM REMARK 280 DTT AND INCREMENTS IN AMMONIUM SULFATE FROM 2.05 TO 2.6 M, PH REMARK 280 7.5 TO 8, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/2 REMARK 290 6555 X-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 -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 0.00000 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 0.00000 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 33.92000 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 33.92000 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 33.92000 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: 4820 ANGSTROM**2 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: 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 MET B 1 N - CA - C ANGL. DEV. = -17.3 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 PRO A 43 65.20 -66.34 REMARK 500 ASP A 85 -169.66 -78.96 REMARK 500 TYR A 94 -74.90 -6.25 REMARK 500 ALA A 100 64.23 -156.94 REMARK 500 ASP A 105 40.36 -92.23 REMARK 500 TYR B 94 -75.72 -2.38 REMARK 500 ALA B 100 68.78 -155.24 REMARK 500 ASP B 105 30.84 -88.11 REMARK 500 ASN B 211 30.64 -97.01 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NDU A 265 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NDN B 265 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMT A 0 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMT B 0 DBREF 3B5B A 1 264 UNP P0A884 TYSY_ECOLI 1 264 DBREF 3B5B B 1 264 UNP P0A884 TYSY_ECOLI 1 264 SEQADV 3B5B GLN A 48 UNP P0A884 LYS 48 ENGINEERED MUTATION SEQADV 3B5B GLN B 48 UNP P0A884 LYS 48 ENGINEERED MUTATION SEQRES 1 A 264 MET LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU ASP SEQRES 2 A 264 GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY THR SEQRES 3 A 264 LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU GLN SEQRES 4 A 264 ASP GLY PHE PRO LEU VAL THR THR GLN ARG CYS HIS LEU SEQRES 5 A 264 ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN GLY SEQRES 6 A 264 ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL THR SEQRES 7 A 264 ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU GLY SEQRES 8 A 264 PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR PRO SEQRES 9 A 264 ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU ASN SEQRES 10 A 264 GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE VAL SEQRES 11 A 264 SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA LEU SEQRES 12 A 264 ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA ASP SEQRES 13 A 264 GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS ASP SEQRES 14 A 264 VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR ALA SEQRES 15 A 264 LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU GLU SEQRES 16 A 264 VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS LEU SEQRES 17 A 264 TYR SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SER SEQRES 18 A 264 ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS ARG SEQRES 19 A 264 LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP PHE SEQRES 20 A 264 GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS ALA SEQRES 21 A 264 PRO VAL ALA ILE SEQRES 1 B 264 MET LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU ASP SEQRES 2 B 264 GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY THR SEQRES 3 B 264 LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU GLN SEQRES 4 B 264 ASP GLY PHE PRO LEU VAL THR THR GLN ARG CYS HIS LEU SEQRES 5 B 264 ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN GLY SEQRES 6 B 264 ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL THR SEQRES 7 B 264 ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU GLY SEQRES 8 B 264 PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR PRO SEQRES 9 B 264 ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU ASN SEQRES 10 B 264 GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE VAL SEQRES 11 B 264 SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA LEU SEQRES 12 B 264 ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA ASP SEQRES 13 B 264 GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS ASP SEQRES 14 B 264 VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR ALA SEQRES 15 B 264 LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU GLU SEQRES 16 B 264 VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS LEU SEQRES 17 B 264 TYR SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SER SEQRES 18 B 264 ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS ARG SEQRES 19 B 264 LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP PHE SEQRES 20 B 264 GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS ALA SEQRES 21 B 264 PRO VAL ALA ILE HET NDU A 265 23 HET FMT A 0 3 HET NDN B 265 23 HET FMT B 0 3 HETNAM NDU 2'-DEOXY-5-NITROURIDINE 5'-MONOPHOSPHATE HETNAM FMT FORMIC ACID HETNAM NDN 2'-DEOXY-5-NITROURIDINE 5'-(DIHYDROGEN PHOSPHATE) HETSYN NDN [(2R,3S,5R)-3-HYDROXY-5-(5-NITRO-2,4-DIOXO-PYRIMIDIN-1- HETSYN 2 NDN YL)OXOLAN-2-YL]METHYL DIHYDROGEN PHOSPHATE FORMUL 3 NDU C9 H14 N3 O10 P FORMUL 4 FMT 2(C H2 O2) FORMUL 5 NDN C9 H12 N3 O10 P FORMUL 7 HOH *52(H2 O) HELIX 1 1 MET A 1 GLY A 15 1 15 HELIX 2 2 HIS A 51 GLN A 64 1 14 HELIX 3 3 ILE A 69 ASN A 75 1 7 HELIX 4 4 VAL A 93 ALA A 100 1 8 HELIX 5 5 ASP A 110 ASP A 122 1 13 HELIX 6 6 ASN A 134 MET A 141 5 8 HELIX 7 7 GLY A 173 CYS A 192 1 20 HELIX 8 8 HIS A 212 SER A 221 1 10 HELIX 9 9 ARG A 243 GLU A 245 5 3 HELIX 10 10 MET B 1 GLY B 15 1 15 HELIX 11 11 HIS B 51 GLN B 64 1 14 HELIX 12 12 ILE B 69 GLU B 74 1 6 HELIX 13 13 VAL B 93 ALA B 100 1 8 HELIX 14 14 ASP B 110 ASP B 122 1 13 HELIX 15 15 ASN B 134 MET B 141 5 8 HELIX 16 16 GLY B 173 CYS B 192 1 20 HELIX 17 17 HIS B 212 SER B 221 1 10 HELIX 18 18 ARG B 243 GLU B 245 5 3 SHEET 1 A 6 THR A 16 LYS A 18 0 SHEET 2 A 6 THR A 26 ASN A 37 -1 O THR A 26 N LYS A 18 SHEET 3 A 6 GLU A 195 TYR A 209 -1 O TRP A 201 N MET A 34 SHEET 4 A 6 LYS A 158 ASP A 169 1 N LEU A 159 O GLU A 195 SHEET 5 A 6 HIS A 147 ALA A 155 -1 N PHE A 149 O TYR A 164 SHEET 6 A 6 ILE A 129 SER A 131 -1 N VAL A 130 O PHE A 150 SHEET 1 B 2 TRP A 101 PRO A 102 0 SHEET 2 B 2 HIS A 108 ILE A 109 -1 O ILE A 109 N TRP A 101 SHEET 1 C 2 LYS A 229 ILE A 232 0 SHEET 2 C 2 PHE A 247 GLU A 250 -1 O GLU A 248 N ILE A 231 SHEET 1 D 6 THR B 16 LYS B 18 0 SHEET 2 D 6 THR B 26 ASN B 37 -1 O THR B 26 N LYS B 18 SHEET 3 D 6 GLU B 195 TYR B 209 -1 O TRP B 201 N MET B 34 SHEET 4 D 6 LYS B 158 ASP B 169 1 N LEU B 159 O GLU B 195 SHEET 5 D 6 HIS B 147 ALA B 155 -1 N PHE B 149 O TYR B 164 SHEET 6 D 6 ILE B 129 SER B 131 -1 N VAL B 130 O PHE B 150 SHEET 1 E 2 TRP B 101 PRO B 102 0 SHEET 2 E 2 HIS B 108 ILE B 109 -1 O ILE B 109 N TRP B 101 SHEET 1 F 2 LYS B 229 ILE B 232 0 SHEET 2 F 2 PHE B 247 GLU B 250 -1 O GLU B 248 N ILE B 231 LINK C FMT A 0 N MET A 1 1555 1555 1.35 LINK SG CYS A 146 C6 NDU A 265 1555 1555 1.89 LINK C FMT B 0 N MET B 1 1555 1555 1.67 SITE 1 AC1 18 ARG A 21 TRP A 80 TYR A 94 LEU A 143 SITE 2 AC1 18 CYS A 146 HIS A 147 GLN A 165 ARG A 166 SITE 3 AC1 18 SER A 167 CYS A 168 ASP A 169 ASN A 177 SITE 4 AC1 18 HIS A 207 TYR A 209 HOH A 285 HOH A 286 SITE 5 AC1 18 ARG B 126 ARG B 127 SITE 1 AC2 18 ARG A 126 ARG A 127 ARG B 21 TRP B 80 SITE 2 AC2 18 TYR B 94 LEU B 143 CYS B 146 HIS B 147 SITE 3 AC2 18 GLN B 165 ARG B 166 SER B 167 CYS B 168 SITE 4 AC2 18 ASP B 169 ASN B 177 HIS B 207 TYR B 209 SITE 5 AC2 18 HOH B 274 HOH B 283 SITE 1 AC3 4 MET A 1 VAL A 45 THR A 46 THR A 47 SITE 1 AC4 4 MET B 1 VAL B 45 THR B 46 THR B 47 CRYST1 127.370 127.370 67.840 90.00 90.00 120.00 P 63 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 0.007851 0.004533 0.000000 0.00000 SCALE2 0.000000 0.009066 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014741 0.00000