1NCE - Header Asymmetric Unit

HEADER BIOSYNTHETIC PROTEIN 05-DEC-02 1NCE

TITLE CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF E. COLI THYMIDYLATE SYNTHASE TITLE 2 D169C WITH DUMP AND THE ANTIFOLATE CB3717

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, ESCHERICHIA COLI O157:H7; SOURCE 3 ORGANISM_COMMON: ,; SOURCE 4 ORGANISM_TAXID: 562,83334; SOURCE 5 STRAIN: , O157:H7; SOURCE 6 GENE: THYA OR B2827 OR Z4144 OR ECS3684; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 562

KEYWDS BETA-SHEET INTERFACE, PROTEIN-DUMP-COFACTOR ANALOG COMPLEX, KEYWDS 2 ASYMMETRIC DIMER, BIOSYNTHETIC PROTEIN

EXPDTA X-RAY DIFFRACTION

AUTHOR D.L.BIRDSALL,J.FINER-MOORE,R.M.STROUD

REVDAT 4 13-JUL-11 1NCE 1 VERSN REVDAT 3 24-FEB-09 1NCE 1 VERSN REVDAT 2 29-APR-03 1NCE 1 JRNL REVDAT 1 25-DEC-02 1NCE 0

JRNL AUTH D.L.BIRDSALL,J.FINER-MOORE,R.M.STROUD JRNL TITL THE ONLY ACTIVE MUTANT OF THYMIDYLATE SYNTHASE D169, A JRNL TITL 2 RESIDUE FAR FROM THE SITE OF METHYL TRANSFER, DEMONSTRATES JRNL TITL 3 THE EXQUISITE NATURE OF ENZYME SPECIFICITY. JRNL REF PROTEIN ENG. V. 16 229 2003 JRNL REFN ISSN 0269-2139 JRNL PMID 12702803 JRNL DOI 10.1093/PROENG/GZG020

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.R.SAGE,M.D.MICHELITSCH,T.J.STOUT,D.BIERMANN,R.NISSEN, REMARK 1 AUTH 2 J FINER-MOORE,R.M.STROUD REMARK 1 TITL D221 IN THYMIDYLATE SYNTHASE CONTROLS CONFORMATION CHANGE, REMARK 1 TITL 2 AND THEREBY OPENING OF THE IMIDAZOLIDINE REMARK 1 REF BIOCHEMISTRY V. 37 13893 1998 REMARK 1 REFN ISSN 0006-2960 REMARK 1 DOI 10.1021/BI9810510 REMARK 1 REFERENCE 2 REMARK 1 AUTH W.R.MONTFORT,K.M.PERRY,E.B.FAUMAN,J.S.FINER-MOORE,G.F.MALEY, REMARK 1 AUTH 2 L.HARDY,F.MALEY,R.M.STROUD REMARK 1 TITL STRUCTURE, MULTIPLE SITE BINDING, AND SEGMENTAL REMARK 1 TITL 2 ACCOMMODATION IN THYMIDYLATE SYNTHASE ON BINDING DUMP AND AN REMARK 1 TITL 3 ANTI-FOLATE REMARK 1 REF BIOCHEMISTRY V. 29 6964 1990 REMARK 1 REFN ISSN 0006-2960

REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 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) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 36.69 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 24679 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) : 0.187 REMARK 3 FREE R VALUE : 0.246 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 6.900 REMARK 3 FREE R VALUE TEST SET COUNT : 1694 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.006 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) : 2.40 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.55 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 3779 REMARK 3 BIN R VALUE (WORKING SET) : 0.2990 REMARK 3 BIN FREE R VALUE : 0.3370 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 7.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 284 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.020 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 : 110 REMARK 3 SOLVENT ATOMS : 178 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 34.20 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -1.95000 REMARK 3 B22 (A**2) : -1.95000 REMARK 3 B33 (A**2) : 3.90000 REMARK 3 B12 (A**2) : 0.26000 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) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.37 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.50 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.008 REMARK 3 BOND ANGLES (DEGREES) : 1.60 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.94 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) : 3.150 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 4.710 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.380 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 5.090 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.33 REMARK 3 BSOL : 56.97 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 : PARAMED.LIG REMARK 3 PARAMETER FILE 4 : FORM.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 PARAMETER FILE 6 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : TOPO.DUMP REMARK 3 TOPOLOGY FILE 4 : TOPO.CB3 REMARK 3 TOPOLOGY FILE 5 : FORM.TOPO REMARK 3 TOPOLOGY FILE 6 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1NCE COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 11-DEC-02. REMARK 100 THE RCSB ID CODE IS RCSB017765.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 21-DEC-98 REMARK 200 TEMPERATURE (KELVIN) : 298.0 REMARK 200 PH : 9.1 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 : RIGAKU RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : MONOCHROMATER REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS II REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 24679 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 REMARK 200 RESOLUTION RANGE LOW (A) : 40.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 8.700 REMARK 200 R MERGE (I) : 0.17400 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 8.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.55 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 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 : 1.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB ENTRY 1KCE WITH WATERS AND LIGANDS REMOVED REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 52.65 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.60 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: POTASSIUM PHOSPHATE, EDTA, AMMONIUM REMARK 280 SULFATE, DTT, PH 9.1, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE REMARK 280 298.0K

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 34.05000 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 34.05000 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 34.05000 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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A HOMODIMER CONSISTING OF CHAINS REMARK 300 A AND B

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: 7950 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 19290 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -19.0 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 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 ILE A 264 O REMARK 470 ILE B 264 O

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 63.88 -66.32 REMARK 500 ILE A 79 -32.66 -36.92 REMARK 500 TYR A 94 -71.72 -14.01 REMARK 500 ALA A 100 65.35 -157.24 REMARK 500 ASP A 122 58.29 -149.02 REMARK 500 ILE B 69 -7.87 -57.29 REMARK 500 THR B 78 -76.30 -73.05 REMARK 500 ILE B 79 -58.44 28.74 REMARK 500 TRP B 83 -3.47 -140.17 REMARK 500 ASP B 85 -167.45 -77.65 REMARK 500 ALA B 155 -84.24 -130.21 REMARK 500 ASP B 156 67.17 -107.95 REMARK 500 ASN B 211 33.94 -80.72 REMARK 500 ARG B 234 139.94 179.67 REMARK 500 ASP B 253 76.53 -118.17 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 598 DISTANCE = 9.43 ANGSTROMS REMARK 525 HOH A 655 DISTANCE = 8.95 ANGSTROMS REMARK 525 HOH A 663 DISTANCE = 10.01 ANGSTROMS REMARK 525 HOH A 710 DISTANCE = 5.02 ANGSTROMS REMARK 525 HOH B 569 DISTANCE = 18.25 ANGSTROMS REMARK 525 HOH B 641 DISTANCE = 7.74 ANGSTROMS REMARK 525 HOH B 642 DISTANCE = 12.12 ANGSTROMS REMARK 525 HOH B 659 DISTANCE = 5.33 ANGSTROMS REMARK 525 HOH B 723 DISTANCE = 7.54 ANGSTROMS REMARK 525 HOH B 754 DISTANCE = 5.05 ANGSTROMS

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UMP A 565 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CB3 A 566 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UMP B 567 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CB3 B 568

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1DNA RELATED DB: PDB REMARK 900 E. COLI THYMIDYLATE SYNTHASE D221(169)N COMPLEX WITH DUMP REMARK 900 AND CB3717 REMARK 900 RELATED ID: 1BJG RELATED DB: PDB REMARK 900 E. COLI THYMIDYLATE SYNTHASE D221(169)N COMPLEX WITH FDUMP REMARK 900 AND CH2H4FOLATE REMARK 900 RELATED ID: 1KCE RELATED DB: PDB REMARK 900 WILD-TYPE E. COLI TS IN A COMPLEX WITH DUMP AND CB3717

DBREF 1NCE A 1 264 UNP P0A884 TYSY_ECOLI 1 264 DBREF 1NCE B 1 264 UNP P0A884 TYSY_ECOLI 1 264

SEQADV 1NCE CXM A 1 UNP P0A884 MET 1 MODIFIED RESIDUE SEQADV 1NCE CYS A 169 UNP P0A884 ASP 169 ENGINEERED SEQADV 1NCE CXM B 1 UNP P0A884 MET 1 MODIFIED RESIDUE SEQADV 1NCE CYS B 169 UNP P0A884 ASP 169 ENGINEERED

SEQRES 1 A 264 CXM 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 LYS 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 CYS 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 CXM 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 LYS 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 CYS 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

MODRES 1NCE CXM A 1 MET N-CARBOXYMETHIONINE MODRES 1NCE CXM B 1 MET N-CARBOXYMETHIONINE

HET CXM A 1 11 HET CXM B 1 11 HET UMP A 565 20 HET CB3 A 566 35 HET UMP B 567 20 HET CB3 B 568 35

HETNAM CXM N-CARBOXYMETHIONINE HETNAM UMP 2'-DEOXYURIDINE 5'-MONOPHOSPHATE HETNAM CB3 10-PROPARGYL-5,8-DIDEAZAFOLIC ACID

HETSYN UMP DUMP

FORMUL 1 CXM 2(C6 H11 N O4 S) FORMUL 3 UMP 2(C9 H13 N2 O8 P) FORMUL 4 CB3 2(C24 H23 N5 O6) FORMUL 7 HOH *178(H2 O)

HELIX 1 1 CXM A 1 GLY A 15 1 15 HELIX 2 2 GLN A 39 GLY A 41 5 3 HELIX 3 3 HIS A 51 GLY A 65 1 15 HELIX 4 4 ILE A 69 ASN A 75 1 7 HELIX 5 5 TRP A 80 ALA A 84 5 5 HELIX 6 6 VAL A 93 ALA A 100 1 8 HELIX 7 7 ASP A 110 ASP A 122 1 13 HELIX 8 8 ASN A 134 MET A 141 5 8 HELIX 9 9 GLY A 173 CYS A 192 1 20 HELIX 10 10 HIS A 212 SER A 221 1 10 HELIX 11 11 SER A 238 TYR A 242 5 5 HELIX 12 12 ARG A 243 GLU A 245 5 3 HELIX 13 13 CXM B 1 GLY B 15 1 15 HELIX 14 14 GLN B 39 GLY B 41 5 3 HELIX 15 15 HIS B 51 GLN B 64 1 14 HELIX 16 16 ILE B 69 GLU B 74 1 6 HELIX 17 17 TRP B 80 ALA B 84 5 5 HELIX 18 18 GLY B 95 ALA B 100 1 6 HELIX 19 19 ASP B 110 ASP B 122 1 13 HELIX 20 20 ASN B 134 MET B 141 5 8 HELIX 21 21 GLY B 173 ASP B 193 1 21 HELIX 22 22 HIS B 212 LEU B 220 1 9 HELIX 23 23 ARG B 243 GLU B 245 5 3

SHEET 1 A 6 THR A 16 ASN A 19 0 SHEET 2 A 6 GLY A 25 ASN A 37 -1 O SER A 28 N THR A 16 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 CYS A 169 1 N CYS A 161 O VAL A 200 SHEET 5 A 6 HIS A 147 ALA A 155 -1 N TYR A 153 O SER A 160 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 PHE B 199 N PHE B 36 SHEET 4 D 6 LYS B 158 CYS B 169 1 N GLN B 165 O GLY B 204 SHEET 5 D 6 HIS B 147 VAL B 154 -1 N TYR B 153 O SER B 160 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 250 N LYS B 229

LINK C CXM A 1 N LYS A 2 1555 1555 1.37 LINK SG CYS A 146 C6 UMP A 565 1555 1555 1.83 LINK C CXM B 1 N LYS B 2 1555 1555 1.37

SITE 1 AC1 14 ARG A 21 CYS A 146 HIS A 147 GLN A 165 SITE 2 AC1 14 ARG A 166 SER A 167 CYS A 169 ASN A 177 SITE 3 AC1 14 HIS A 207 TYR A 209 CB3 A 566 HOH A 675 SITE 4 AC1 14 ARG B 126 ARG B 127 SITE 1 AC2 17 HIS A 51 SER A 54 GLU A 58 ILE A 79 SITE 2 AC2 17 TRP A 83 LEU A 143 CYS A 169 GLY A 173 SITE 3 AC2 17 PHE A 176 ASN A 177 TYR A 209 ALA A 263 SITE 4 AC2 17 UMP A 565 HOH A 587 HOH A 651 HOH A 662 SITE 5 AC2 17 HOH A 848 SITE 1 AC3 15 ARG A 126 ARG A 127 ARG B 21 CYS B 146 SITE 2 AC3 15 HIS B 147 GLN B 165 ARG B 166 SER B 167 SITE 3 AC3 15 CYS B 168 CYS B 169 ASN B 177 HIS B 207 SITE 4 AC3 15 TYR B 209 CB3 B 568 HOH B 595 SITE 1 AC4 13 HIS B 51 SER B 54 TRP B 83 CYS B 169 SITE 2 AC4 13 LEU B 172 GLY B 173 PHE B 176 ASN B 177 SITE 3 AC4 13 TYR B 209 ALA B 263 UMP B 567 HOH B 649 SITE 4 AC4 13 HOH B 835

CRYST1 127.100 127.100 68.100 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 0.007868 0.004542 0.000000 0.00000

SCALE2 0.000000 0.009085 0.000000 0.00000

SCALE3 0.000000 0.000000 0.014684 0.00000