HEADER TRANSFERASE 05-DEC-95 1TSX TITLE THYMIDYLATE SYNTHASE R179E MUTANT COMPND MOL_ID: 1; COMPND 2 MOLECULE: THYMIDYLATE SYNTHASE; COMPND 3 CHAIN: A; COMPND 4 EC: 2.1.1.45; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: LACTOBACILLUS CASEI; SOURCE 3 ORGANISM_TAXID: 1582; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: CHI-2913; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PKPTSD; SOURCE 8 OTHER_DETAILS: PURCHASED FROM SIGMA KEYWDS TRANSFERASE, METHYLTRANSFERASE, NUCLEOTIDE BIOSYNTHESIS EXPDTA X-RAY DIFFRACTION AUTHOR J.FINER-MOORE,R.M.STROUD REVDAT 5 14-FEB-24 1TSX 1 REMARK REVDAT 4 03-NOV-21 1TSX 1 REMARK SEQADV REVDAT 3 13-JUL-11 1TSX 1 VERSN REVDAT 2 24-FEB-09 1TSX 1 VERSN REVDAT 1 08-MAR-96 1TSX 0 JRNL AUTH J.S.FINER-MOORE,E.B.FAUMAN,R.J.MORSE,D.V.SANTI,R.M.STROUD JRNL TITL CONTRIBUTION OF A SALT BRIDGE TO BINDING AFFINITY AND DUMP JRNL TITL 2 ORIENTATION TO CATALYTIC RATE: MUTATION OF A JRNL TITL 3 SUBSTRATE-BINDING ARGININE IN THYMIDYLATE SYNTHASE. JRNL REF PROTEIN ENG. V. 9 69 1996 JRNL REFN ISSN 0269-2139 JRNL PMID 9053905 JRNL DOI 10.1093/PROTEIN/9.1.69 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.M.STROUD,J.S.FINER-MOORE REMARK 1 TITL STEREOCHEMISTRY OF A MULTISTEP(SLASH)BIPARTITE METHYL REMARK 1 TITL 2 TRANSFER REACTION: THYMIDYLATE SYNTHASE REMARK 1 REF FASEB J. V. 7 671 1993 REMARK 1 REFN ISSN 0892-6638 REMARK 1 REFERENCE 2 REMARK 1 AUTH J.S.FINER-MOORE,E.B.FAUMAN,P.G.FOSTER,K.M.PERRY,D.V.SANTI, REMARK 1 AUTH 2 R.M.STROUD REMARK 1 TITL REFINED STRUCTURES OF SUBSTRATE-BOUND AND PHOSPHATE-BOUND REMARK 1 TITL 2 THYMIDYLATE SYNTHASE FROM LACTOBACILLUS CASEI REMARK 1 REF J.MOL.BIOL. V. 232 1101 1993 REMARK 1 REFN ISSN 0022-2836 REMARK 1 REFERENCE 3 REMARK 1 AUTH L.W.HARDY,J.S.FINER-MOORE,W.R.MONTFORT,M.O.JONES,D.V.SANTI, REMARK 1 AUTH 2 R.M.STROUD REMARK 1 TITL ATOMIC STRUCTURE OF THYMIDYLATE SYNTHASE: TARGET FOR REMARK 1 TITL 2 RATIONAL DRUG DESIGN REMARK 1 REF SCIENCE V. 235 448 1987 REMARK 1 REFN ISSN 0036-8075 REMARK 2 REMARK 2 RESOLUTION. 2.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 7.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 1.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 67.0 REMARK 3 NUMBER OF REFLECTIONS : 10279 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING SET) : 0.189 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL 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 : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2591 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 20 REMARK 3 SOLVENT ATOMS : 76 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 20.80 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) : 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) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.008 REMARK 3 BOND ANGLES (DEGREES) : 1.600 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.340 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL 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 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REMARK 3 RESIDUES 314 - 316 ARE DISORDERED AND WERE REFINED IN TWO REMARK 3 INDEPENDENT CONFORMATIONS WITH PARTIAL OCCUPANCY ASSIGNED REMARK 3 EACH CONFORMATION REMARK 4 REMARK 4 1TSX 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_1000176842. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 06-JAN-93 REMARK 200 TEMPERATURE (KELVIN) : 295 REMARK 200 PH : 7.4 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 RU300 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE CRYSTAL REMARK 200 OPTICS : COLLIMATOR REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13314 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 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 (%) : 56.0 REMARK 200 DATA REDUNDANCY : 5.500 REMARK 200 R MERGE (I) : 0.09100 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL 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 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR 3.1 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 58.13 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.94 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.4 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 80.63333 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 161.26667 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 120.95000 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 201.58333 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 40.31667 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 80.63333 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 161.26667 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 201.58333 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 120.95000 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 40.31667 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: SYMMETRY REMARK 300 THE CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS PRESENTED REMARK 300 BELOW GENERATE THE SUBUNITS OF THE POLYMERIC MOLECULE. REMARK 300 THE DIMER IS GENERATED BY A CRYSTALLOGRAPHIC TWO-FOLD, THE REMARK 300 TRANSFORMATION MATRIX MUST BE APPLY TO FRACTIONAL REMARK 300 COORDINATES. REMARK 300 REMARK 300 SYMMETRY1 1 -1.000000 1.000000 0.000000 0.00000 REMARK 300 SYMMETRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 300 SYMMETRY3 1 0.000000 0.000000 -1.000000 -0.50000 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,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 5590 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 25570 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -28.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 -120.95000 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 45 45.13 -66.51 REMARK 500 LYS A 50 139.57 -174.53 REMARK 500 PRO A 53 94.51 -62.22 REMARK 500 MET A 101 51.83 -109.32 REMARK 500 THR A 102 106.83 -57.60 REMARK 500 ASP A 103 63.68 31.17 REMARK 500 PHE A 104 -48.53 -25.60 REMARK 500 ALA A 152 52.81 -146.76 REMARK 500 LYS A 157 -5.93 -57.51 REMARK 500 ASP A 159 -156.08 -81.73 REMARK 500 MET A 296 -64.14 -28.03 REMARK 500 VAL A 314 44.67 -78.84 REMARK 500 ALA A 315 99.34 -65.26 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: NULL REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE UMP A 317 DBREF 1TSX A 1 316 UNP P00469 TYSY_LACCA 1 316 SEQADV 1TSX GLU A 179 UNP P00469 ARG 179 ENGINEERED MUTATION SEQRES 1 A 316 MET LEU GLU GLN PRO TYR LEU ASP LEU ALA LYS LYS VAL SEQRES 2 A 316 LEU ASP GLU GLY HIS PHE LYS PRO ASP ARG THR HIS THR SEQRES 3 A 316 GLY THR TYR SER ILE PHE GLY HIS GLN MET ARG PHE ASP SEQRES 4 A 316 LEU SER LYS GLY PHE PRO LEU LEU THR THR LYS LYS VAL SEQRES 5 A 316 PRO PHE GLY LEU ILE LYS SER GLU LEU LEU TRP PHE LEU SEQRES 6 A 316 HIS GLY ASP THR ASN ILE ARG PHE LEU LEU GLN HIS ARG SEQRES 7 A 316 ASN HIS ILE TRP ASP GLU TRP ALA PHE GLU LYS TRP VAL SEQRES 8 A 316 LYS SER ASP GLU TYR HIS GLY PRO ASP MET THR ASP PHE SEQRES 9 A 316 GLY HIS ARG SER GLN LYS ASP PRO GLU PHE ALA ALA VAL SEQRES 10 A 316 TYR HIS GLU GLU MET ALA LYS PHE ASP ASP ARG VAL LEU SEQRES 11 A 316 HIS ASP ASP ALA PHE ALA ALA LYS TYR GLY ASP LEU GLY SEQRES 12 A 316 LEU VAL TYR GLY SER GLN TRP ARG ALA TRP HIS THR SER SEQRES 13 A 316 LYS GLY ASP THR ILE ASP GLN LEU GLY ASP VAL ILE GLU SEQRES 14 A 316 GLN ILE LYS THR HIS PRO TYR SER ARG GLU LEU ILE VAL SEQRES 15 A 316 SER ALA TRP ASN PRO GLU ASP VAL PRO THR MET ALA LEU SEQRES 16 A 316 PRO PRO CYS HIS THR LEU TYR GLN PHE TYR VAL ASN ASP SEQRES 17 A 316 GLY LYS LEU SER LEU GLN LEU TYR GLN ARG SER ALA ASP SEQRES 18 A 316 ILE PHE LEU GLY VAL PRO PHE ASN ILE ALA SER TYR ALA SEQRES 19 A 316 LEU LEU THR HIS LEU VAL ALA HIS GLU CYS GLY LEU GLU SEQRES 20 A 316 VAL GLY GLU PHE ILE HIS THR PHE GLY ASP ALA HIS LEU SEQRES 21 A 316 TYR VAL ASN HIS LEU ASP GLN ILE LYS GLU GLN LEU SER SEQRES 22 A 316 ARG THR PRO ARG PRO ALA PRO THR LEU GLN LEU ASN PRO SEQRES 23 A 316 ASP LYS HIS ASP ILE PHE ASP PHE ASP MET LYS ASP ILE SEQRES 24 A 316 LYS LEU LEU ASN TYR ASP PRO TYR PRO ALA ILE LYS ALA SEQRES 25 A 316 PRO VAL ALA VAL HET UMP A 317 20 HETNAM UMP 2'-DEOXYURIDINE 5'-MONOPHOSPHATE HETSYN UMP DUMP FORMUL 2 UMP C9 H13 N2 O8 P FORMUL 3 HOH *76(H2 O) HELIX 1 1 LEU A 2 GLU A 16 5 15 HELIX 2 2 LEU A 40 LYS A 42 5 3 HELIX 3 3 PHE A 54 LEU A 65 1 12 HELIX 4 4 ILE A 71 HIS A 77 5 7 HELIX 5 5 ASP A 83 VAL A 91 1 9 HELIX 6 6 PHE A 104 LYS A 110 1 7 HELIX 7 7 PRO A 112 HIS A 131 1 20 HELIX 8 8 ASP A 133 TYR A 139 1 7 HELIX 9 9 TYR A 146 ARG A 151 1 6 HELIX 10 10 GLN A 163 THR A 173 1 11 HELIX 11 11 PRO A 187 VAL A 190 1 4 HELIX 12 12 VAL A 226 CYS A 244 1 19 HELIX 13 13 VAL A 262 SER A 273 5 12 HELIX 14 14 ILE A 291 ASP A 293 5 3 HELIX 15 15 MET A 296 ASP A 298 5 3 SHEET 1 A 4 HIS A 18 LYS A 20 0 SHEET 2 A 4 THR A 28 PHE A 32 -1 N SER A 30 O HIS A 18 SHEET 3 A 4 ASP A 257 TYR A 261 -1 N LEU A 260 O TYR A 29 SHEET 4 A 4 SER A 219 ASP A 221 1 N ALA A 220 O ASP A 257 SHEET 1 B 5 HIS A 34 ASP A 39 0 SHEET 2 B 5 GLU A 250 PHE A 255 -1 N PHE A 255 O HIS A 34 SHEET 3 B 5 LYS A 210 GLN A 217 1 N LEU A 213 O ILE A 252 SHEET 4 B 5 HIS A 199 ASN A 207 -1 N ASN A 207 O LYS A 210 SHEET 5 B 5 ILE A 181 SER A 183 -1 N VAL A 182 O TYR A 202 SHEET 1 C 2 THR A 281 LEU A 284 0 SHEET 2 C 2 ILE A 299 LEU A 302 -1 N LEU A 302 O THR A 281 SITE 1 CAT 1 CYS A 198 SITE 1 AC1 16 ARG A 23 ARG A 178 GLU A 179 CYS A 198 SITE 2 AC1 16 HIS A 199 GLN A 217 ARG A 218 SER A 219 SITE 3 AC1 16 ALA A 220 ASP A 221 ASN A 229 HIS A 259 SITE 4 AC1 16 TYR A 261 HOH A 318 HOH A 349 HOH A 384 CRYST1 78.500 78.500 241.900 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 0.012739 0.007355 0.000000 0.00000 SCALE2 0.000000 0.014710 0.000000 0.00000 SCALE3 0.000000 0.000000 0.004134 0.00000