HEADER METHYLTRANSFERASE 23-OCT-97 1AXW TITLE E. COLI THYMIDYLATE SYNTHASE IN COMPLEX WITH METHOTREXATE (MTX) AND TITLE 2 2'-DEOXYURIDINE 5'-MONOPHOSPHATE (DUMP) COMPND MOL_ID: 1; COMPND 2 MOLECULE: THYMIDYLATE SYNTHASE; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: TS, THYMIDYLATE SYNTHETASE; COMPND 5 EC: 2.1.1.45; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 CELL_LINE: X2913; SOURCE 5 GENE: THYA; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PTHYA-WT; SOURCE 9 EXPRESSION_SYSTEM_GENE: THYA KEYWDS METHYLTRANSFERASE, TRANSFERASE, INHIBITOR EXPDTA X-RAY DIFFRACTION AUTHOR T.J.STOUT,C.R.SAGE,R.M.STROUD REVDAT 3 02-AUG-23 1AXW 1 REMARK LINK REVDAT 2 24-FEB-09 1AXW 1 VERSN REVDAT 1 28-OCT-98 1AXW 0 JRNL AUTH W.WELCH,C.R.SAGE,T.J.STOUT,T.KLEIN,J.RUPPERT,R.M.STROUD, JRNL AUTH 2 A.JAIN JRNL TITL DISCOVERY OF THYMIDYLATE SYNTHASE INHIBITORS USING FLEXIBLE JRNL TITL 2 DOCKING AND AN EMPIRICALLY TUNED SCORING FUNCTION JRNL REF TO BE PUBLISHED JRNL REFN REMARK 1 REMARK 1 REFERENCE 1 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 ERRATUM. 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 10864 1990 REMARK 1 REFN ISSN 0006-2960 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. 1.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.854 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 50.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 10000000.000 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0010 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 78.3 REMARK 3 NUMBER OF REFLECTIONS : 69189 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : SHELLS REMARK 3 R VALUE (WORKING SET) : 0.217 REMARK 3 FREE R VALUE : 0.265 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 6.300 REMARK 3 FREE R VALUE TEST SET COUNT : 4363 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 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) : 1.70 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.81 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 77.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 8780 REMARK 3 BIN R VALUE (WORKING SET) : 0.3520 REMARK 3 BIN FREE R VALUE : 0.3360 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 10.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 861 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.016 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 4306 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 106 REMARK 3 SOLVENT ATOMS : 188 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 10.50 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 29.00 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.30 REMARK 3 ESD FROM SIGMAA (A) : 0.48 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) : 0.32 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.59 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.008 REMARK 3 BOND ANGLES (DEGREES) : 1.500 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 25.20 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.180 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) : 2.980 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 4.220 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.960 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 5.860 ; 2.500 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 : PARHCSDX.PRO REMARK 3 PARAMETER FILE 2 : PARAM19.SOL REMARK 3 PARAMETER FILE 3 : SAGE_PARAMED.LIG REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : TOPH19.SOL REMARK 3 TOPOLOGY FILE 3 : TOPO.DUMP REMARK 3 TOPOLOGY FILE 4 : TOPO2.MTX REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1AXW COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000171390. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 25-NOV-96 REMARK 200 TEMPERATURE (KELVIN) : 278 REMARK 200 PH : 7.8 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 RUH2R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 69189 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 78.3 REMARK 200 DATA REDUNDANCY : 7.900 REMARK 200 R MERGE (I) : 0.09000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 16.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.75 REMARK 200 COMPLETENESS FOR SHELL (%) : 70.1 REMARK 200 DATA REDUNDANCY IN SHELL : 3.00 REMARK 200 R MERGE FOR SHELL (I) : 0.34400 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: DIFFERENCE FOURIER REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 1KCE REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 52.40 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.56 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 4.2 MG/ML E.COLI TS, 0.38 MM DUMP, 3.8 REMARK 280 MM DTT, 1.0 MM MTX AND 1.2 M (NH4)2SO4, PH 7.8 (20 MM KPO4) OVER REMARK 280 2.4 M (NH4)2SO4 AND 1.0 MM DTT 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 34.03000 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 34.03000 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 34.03000 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: 8260 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 19230 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -22.0 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 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 94 -65.89 -24.01 REMARK 500 ALA A 100 63.38 -155.81 REMARK 500 ASP A 122 59.26 -148.38 REMARK 500 ILE B 69 7.59 -69.86 REMARK 500 TYR B 94 -68.20 -17.74 REMARK 500 ALA B 100 61.32 -150.68 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAA REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CATALYTIC CYSTEINE. REMARK 800 REMARK 800 SITE_IDENTIFIER: CAB REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CATALYTIC CYSTEINE. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UMP A 603 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTX A 732 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UMP B 604 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTX B 733 DBREF 1AXW A 1 264 UNP P0A884 TYSY_ECOLI 1 264 DBREF 1AXW B 1 264 UNP P0A884 TYSY_ECOLI 1 264 SEQRES 1 A 265 FMT MET LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU SEQRES 2 A 265 ASP GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY SEQRES 3 A 265 THR LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU SEQRES 4 A 265 GLN ASP GLY PHE PRO LEU VAL THR THR LYS ARG CYS HIS SEQRES 5 A 265 LEU ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN SEQRES 6 A 265 GLY ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL SEQRES 7 A 265 THR ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU SEQRES 8 A 265 GLY PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR SEQRES 9 A 265 PRO ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU SEQRES 10 A 265 ASN GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE SEQRES 11 A 265 VAL SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA SEQRES 12 A 265 LEU ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA SEQRES 13 A 265 ASP GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS SEQRES 14 A 265 ASP VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR SEQRES 15 A 265 ALA LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU SEQRES 16 A 265 GLU VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS SEQRES 17 A 265 LEU TYR SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SEQRES 18 A 265 SER ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS SEQRES 19 A 265 ARG LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP SEQRES 20 A 265 PHE GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS SEQRES 21 A 265 ALA PRO VAL ALA ILE SEQRES 1 B 265 FMT MET LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU SEQRES 2 B 265 ASP GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY SEQRES 3 B 265 THR LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU SEQRES 4 B 265 GLN ASP GLY PHE PRO LEU VAL THR THR LYS ARG CYS HIS SEQRES 5 B 265 LEU ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN SEQRES 6 B 265 GLY ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL SEQRES 7 B 265 THR ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU SEQRES 8 B 265 GLY PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR SEQRES 9 B 265 PRO ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU SEQRES 10 B 265 ASN GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE SEQRES 11 B 265 VAL SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA SEQRES 12 B 265 LEU ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA SEQRES 13 B 265 ASP GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS SEQRES 14 B 265 ASP VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR SEQRES 15 B 265 ALA LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU SEQRES 16 B 265 GLU VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS SEQRES 17 B 265 LEU TYR SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SEQRES 18 B 265 SER ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS SEQRES 19 B 265 ARG LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP SEQRES 20 B 265 PHE GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS SEQRES 21 B 265 ALA PRO VAL ALA ILE HET FMT A 0 3 HET FMT B 0 3 HET UMP A 603 20 HET MTX A 732 33 HET UMP B 604 20 HET MTX B 733 33 HETNAM FMT FORMIC ACID HETNAM UMP 2'-DEOXYURIDINE 5'-MONOPHOSPHATE HETNAM MTX METHOTREXATE HETSYN UMP DUMP FORMUL 1 FMT 2(C H2 O2) FORMUL 3 UMP 2(C9 H13 N2 O8 P) FORMUL 4 MTX 2(C20 H22 N8 O5) FORMUL 7 HOH *188(H2 O) HELIX 1 1 LYS A 2 GLU A 14 1 13 HELIX 2 2 LEU A 38 ASP A 40 5 3 HELIX 3 3 LEU A 52 GLN A 64 1 13 HELIX 4 4 ALA A 70 ASN A 75 1 6 HELIX 5 5 ASP A 81 TRP A 83 5 3 HELIX 6 6 TYR A 94 ALA A 100 1 7 HELIX 7 7 GLN A 111 ASN A 121 1 11 HELIX 8 8 VAL A 135 LYS A 140 5 6 HELIX 9 9 GLY A 173 GLN A 191 1 19 HELIX 10 10 SER A 210 SER A 221 5 12 HELIX 11 11 ILE A 239 ASP A 241 5 3 HELIX 12 12 PHE A 244 ASP A 246 5 3 HELIX 13 13 LYS B 2 GLU B 14 1 13 HELIX 14 14 LEU B 38 ASP B 40 5 3 HELIX 15 15 LEU B 52 GLN B 64 1 13 HELIX 16 16 ALA B 70 ASN B 75 1 6 HELIX 17 17 ASP B 81 TRP B 83 5 3 HELIX 18 18 TYR B 94 ALA B 100 1 7 HELIX 19 19 GLN B 111 ASN B 121 1 11 HELIX 20 20 VAL B 135 LYS B 140 5 6 HELIX 21 21 GLY B 173 GLN B 191 1 19 HELIX 22 22 SER B 210 SER B 221 5 12 HELIX 23 23 ILE B 239 ASP B 241 5 3 HELIX 24 24 PHE B 244 ASP B 246 5 3 SHEET 1 A 4 THR A 16 LYS A 18 0 SHEET 2 A 4 THR A 26 PHE A 30 -1 N SER A 28 O THR A 16 SHEET 3 A 4 ASP A 205 TYR A 209 -1 N LEU A 208 O LEU A 27 SHEET 4 A 4 SER A 167 ASP A 169 1 N CYS A 168 O ASP A 205 SHEET 1 B 5 HIS A 32 ASN A 37 0 SHEET 2 B 5 ASP A 198 GLY A 203 -1 N GLY A 203 O HIS A 32 SHEET 3 B 5 LYS A 158 GLN A 165 1 N CYS A 161 O VAL A 200 SHEET 4 B 5 HIS A 147 ALA A 155 -1 N ALA A 155 O LYS A 158 SHEET 5 B 5 ILE A 129 SER A 131 -1 N VAL A 130 O PHE A 150 SHEET 1 C 2 LYS A 229 ILE A 232 0 SHEET 2 C 2 PHE A 247 GLU A 250 -1 N GLU A 250 O LYS A 229 SHEET 1 D 4 THR B 16 LYS B 18 0 SHEET 2 D 4 THR B 26 PHE B 30 -1 N SER B 28 O THR B 16 SHEET 3 D 4 ASP B 205 TYR B 209 -1 N LEU B 208 O LEU B 27 SHEET 4 D 4 SER B 167 ASP B 169 1 N CYS B 168 O ASP B 205 SHEET 1 E 5 HIS B 32 ASN B 37 0 SHEET 2 E 5 ASP B 198 GLY B 203 -1 N GLY B 203 O HIS B 32 SHEET 3 E 5 LYS B 158 GLN B 165 1 N CYS B 161 O VAL B 200 SHEET 4 E 5 HIS B 147 ALA B 155 -1 N ALA B 155 O LYS B 158 SHEET 5 E 5 ILE B 129 SER B 131 -1 N VAL B 130 O PHE B 150 SHEET 1 F 2 LYS B 229 ILE B 232 0 SHEET 2 F 2 PHE B 247 GLU B 250 -1 N GLU B 250 O LYS B 229 LINK C FMT A 0 N MET A 1 1555 1555 1.33 LINK O2 FMT A 0 N MET A 1 1555 1555 1.94 LINK C FMT B 0 N MET B 1 1555 1555 1.33 LINK O1 FMT B 0 N MET B 1 1555 1555 2.04 SITE 1 CAA 1 CYS A 146 SITE 1 CAB 1 CYS B 146 SITE 1 AC1 16 ARG A 21 CYS A 146 HIS A 147 GLN A 165 SITE 2 AC1 16 ARG A 166 SER A 167 CYS A 168 ASP A 169 SITE 3 AC1 16 ASN A 177 HIS A 207 TYR A 209 MTX A 732 SITE 4 AC1 16 HOH A 786 HOH A 815 ARG B 126 ARG B 127 SITE 1 AC2 13 LYS A 48 HIS A 51 ILE A 79 TRP A 83 SITE 2 AC2 13 LEU A 143 ASP A 169 LEU A 172 GLY A 173 SITE 3 AC2 13 PHE A 176 TYR A 209 VAL A 262 ALA A 263 SITE 4 AC2 13 UMP A 603 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 ASP B 169 ASN B 177 HIS B 207 SITE 4 AC3 15 TYR B 209 MTX B 733 HOH B 738 SITE 1 AC4 11 LYS B 48 HIS B 51 TRP B 83 ASP B 169 SITE 2 AC4 11 PHE B 171 LEU B 172 GLY B 173 TYR B 209 SITE 3 AC4 11 ILE B 258 ALA B 263 UMP B 604 CRYST1 127.340 127.340 68.060 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 0.007853 0.004534 0.000000 0.00000 SCALE2 0.000000 0.009068 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014693 0.00000 MTRIX1 1 -0.999955 0.008067 -0.004980 61.84860 1 MTRIX2 1 -0.008931 -0.625512 0.780163 22.05930 1 MTRIX3 1 0.003178 0.780173 0.625556 -10.48290 1 HETATM 1 C FMT A 0 21.686 19.238 50.160 1.00 19.92 C HETATM 2 O1 FMT A 0 22.387 18.323 50.635 1.00 20.30 O HETATM 3 O2 FMT A 0 20.683 18.999 49.465 1.00 23.21 O