HEADER OXIDOREDUCTASE 10-JUL-07 2QK8 TITLE CRYSTAL STRUCTURE OF THE ANTHRAX DRUG TARGET, BACILLUS ANTHRACIS TITLE 2 DIHYDROFOLATE REDUCTASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: DIHYDROFOLATE REDUCTASE; COMPND 3 CHAIN: A; COMPND 4 EC: 1.5.1.3; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS ANTHRACIS STR.; SOURCE 3 ORGANISM_TAXID: 260799; SOURCE 4 STRAIN: STERNE; SOURCE 5 GENE: DFRA; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PROCARYOTIC FUSION EXPRESSION PLASMID SOURCE 10 WITH T7 PROMOTER AND N-TERMINAL HEXAHISTIDINE AND SUMO TAGS; SOURCE 11 EXPRESSION_SYSTEM_PLASMID: CHAMPION PET-SUMO KEYWDS OXIDOREDUCTASE, METHOTREXATE, PTERIDINE BINDING, NUCLEOTIDE PHOSPHATE KEYWDS 2 BINDING, PSEUDO-ROSSMAN FOLD EXPDTA X-RAY DIFFRACTION AUTHOR B.C.BENNETT,H.XU,R.F.SIMMERMAN,R.E.LEE,C.G.DEALWIS REVDAT 5 30-AUG-23 2QK8 1 REMARK REVDAT 4 13-JUL-11 2QK8 1 VERSN REVDAT 3 24-FEB-09 2QK8 1 VERSN REVDAT 2 16-OCT-07 2QK8 1 JRNL REVDAT 1 28-AUG-07 2QK8 0 JRNL AUTH B.C.BENNETT,H.XU,R.F.SIMMERMAN,R.E.LEE,C.G.DEALWIS JRNL TITL CRYSTAL STRUCTURE OF THE ANTHRAX DRUG TARGET, BACILLUS JRNL TITL 2 ANTHRACIS DIHYDROFOLATE REDUCTASE. JRNL REF J.MED.CHEM. V. 50 4374 2007 JRNL REFN ISSN 0022-2623 JRNL PMID 17696333 JRNL DOI 10.1021/JM070319V REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0007 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 22.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 95.7 REMARK 3 NUMBER OF REFLECTIONS : 7171 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) : 0.244 REMARK 3 R VALUE (WORKING SET) : 0.243 REMARK 3 FREE R VALUE : 0.274 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 374 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.40 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.46 REMARK 3 REFLECTION IN BIN (WORKING SET) : 474 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 89.96 REMARK 3 BIN R VALUE (WORKING SET) : 0.3660 REMARK 3 BIN FREE R VALUE SET COUNT : 37 REMARK 3 BIN FREE R VALUE : 0.3990 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1347 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 33 REMARK 3 SOLVENT ATOMS : 48 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 32.80 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 44.40 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.595 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.303 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.263 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 11.980 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.924 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.903 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1419 ; 0.017 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1920 ; 1.895 ; 1.960 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 161 ; 9.670 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 73 ;38.162 ;24.247 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 242 ;21.543 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 7 ;22.184 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 194 ; 0.123 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1101 ; 0.006 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 650 ; 0.281 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 901 ; 0.335 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 53 ; 0.181 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 42 ; 0.269 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 7 ; 0.214 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 842 ; 0.959 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1322 ; 1.725 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 688 ; 2.167 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 598 ; 3.155 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2QK8 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-JUL-07. REMARK 100 THE DEPOSITION ID IS D_1000043702. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-AUG-06 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 14-BM-C REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9 REMARK 200 MONOCHROMATOR : BENT GE(111) MONOCHROMATOR REMARK 200 OPTICS : BENT CONICAL SI-MIRROR (RH REMARK 200 COATED) BENT GE(111) REMARK 200 MONOCHROMATOR REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 10104 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 REMARK 200 RESOLUTION RANGE LOW (A) : 58.400 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 92.3 REMARK 200 DATA REDUNDANCY : 3.300 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.09900 REMARK 200 FOR THE DATA SET : 13.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.28 REMARK 200 COMPLETENESS FOR SHELL (%) : 76.8 REMARK 200 DATA REDUNDANCY IN SHELL : 2.90 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.34200 REMARK 200 FOR SHELL : 2.800 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: PDB ENTRY: 1ZDR (BACILLUS STEAROTHERMOPHILUS DHFR) REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 52.76 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.60 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M BIS-TRIS PH 5.5, 0.2 M CACL2, REMARK 280 20% PEG 3350, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K 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 41.34850 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 20.61800 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 41.34850 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 20.61800 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 300 REMARK: ONLY ONE MOLECULE IN THE ASYMMETRIC UNIT. ENZYME IS REMARK 300 FUNCTIONAL AS A MONOMER. 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: MONOMERIC 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 209 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 224 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 230 LIES ON A SPECIAL POSITION. 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 ASP A 10 CB - CG - OD2 ANGL. DEV. = 8.1 DEGREES REMARK 500 ASP A 103 CB - CG - OD2 ANGL. DEV. = 6.5 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 ASP A 10 178.74 -37.42 REMARK 500 LYS A 17 -85.12 -122.92 REMARK 500 ASP A 18 -60.36 -92.69 REMARK 500 ASN A 19 -49.44 -145.51 REMARK 500 TRP A 23 -129.89 -113.61 REMARK 500 ARG A 24 88.49 159.32 REMARK 500 PRO A 26 -55.99 -19.31 REMARK 500 TYR A 31 -36.43 -38.35 REMARK 500 LYS A 34 -73.21 -40.24 REMARK 500 LYS A 88 -56.97 -21.62 REMARK 500 GLU A 91 -70.46 -34.34 REMARK 500 HIS A 119 140.29 165.65 REMARK 500 ASP A 124 -8.78 -147.73 REMARK 500 PRO A 128 105.85 -49.19 REMARK 500 MET A 130 -97.47 -140.24 REMARK 500 ASN A 134 -157.48 -149.33 REMARK 500 TRP A 135 -70.24 -124.85 REMARK 500 LYS A 136 106.70 160.39 REMARK 500 VAL A 138 10.74 -143.85 REMARK 500 PHE A 139 137.11 169.95 REMARK 500 ASN A 149 30.16 115.96 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 GLY A 97 GLY A 98 -138.73 REMARK 500 ASP A 131 MET A 132 149.35 REMARK 500 REMARK 500 REMARK: NULL DBREF 2QK8 A 1 162 UNP Q81R22 Q81R22_BACAN 1 162 SEQRES 1 A 162 MET ILE VAL SER PHE MET VAL ALA MET ASP GLU ASN ARG SEQRES 2 A 162 VAL ILE GLY LYS ASP ASN ASN LEU PRO TRP ARG LEU PRO SEQRES 3 A 162 SER GLU LEU GLN TYR VAL LYS LYS THR THR MET GLY HIS SEQRES 4 A 162 PRO LEU ILE MET GLY ARG LYS ASN TYR GLU ALA ILE GLY SEQRES 5 A 162 ARG PRO LEU PRO GLY ARG ARG ASN ILE ILE VAL THR ARG SEQRES 6 A 162 ASN GLU GLY TYR HIS VAL GLU GLY CYS GLU VAL ALA HIS SEQRES 7 A 162 SER VAL GLU GLU VAL PHE GLU LEU CYS LYS ASN GLU GLU SEQRES 8 A 162 GLU ILE PHE ILE PHE GLY GLY ALA GLN ILE TYR ASP LEU SEQRES 9 A 162 PHE LEU PRO TYR VAL ASP LYS LEU TYR ILE THR LYS ILE SEQRES 10 A 162 HIS HIS ALA PHE GLU GLY ASP THR PHE PHE PRO GLU MET SEQRES 11 A 162 ASP MET THR ASN TRP LYS GLU VAL PHE VAL GLU LYS GLY SEQRES 12 A 162 LEU THR ASP GLU LYS ASN PRO TYR THR TYR TYR TYR HIS SEQRES 13 A 162 VAL TYR GLU LYS GLN GLN HET MTX A 200 33 HETNAM MTX METHOTREXATE FORMUL 2 MTX C20 H22 N8 O5 FORMUL 3 HOH *48(H2 O) HELIX 1 1 LEU A 25 MET A 37 1 13 HELIX 2 2 ARG A 45 GLY A 52 1 8 HELIX 3 3 SER A 79 CYS A 87 1 9 HELIX 4 4 GLY A 98 PHE A 105 1 8 SHEET 1 A 8 GLU A 75 ALA A 77 0 SHEET 2 A 8 ASN A 60 VAL A 63 1 N ASN A 60 O GLU A 75 SHEET 3 A 8 LEU A 41 GLY A 44 1 N MET A 43 O ILE A 61 SHEET 4 A 8 GLU A 92 GLY A 97 1 O PHE A 96 N ILE A 42 SHEET 5 A 8 ILE A 2 MET A 9 1 N ILE A 2 O ILE A 93 SHEET 6 A 8 LYS A 111 LYS A 116 1 O TYR A 113 N VAL A 7 SHEET 7 A 8 TYR A 154 GLU A 159 -1 O HIS A 156 N ILE A 114 SHEET 8 A 8 GLU A 137 LYS A 142 -1 N VAL A 138 O VAL A 157 SHEET 1 B 2 VAL A 14 GLY A 16 0 SHEET 2 B 2 THR A 125 PHE A 126 -1 O THR A 125 N ILE A 15 CISPEP 1 ASN A 134 TRP A 135 0 12.50 CRYST1 82.697 41.236 67.032 90.00 119.20 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 0.012092 0.000000 0.006759 0.00000 SCALE2 0.000000 0.024251 0.000000 0.00000 SCALE3 0.000000 0.000000 0.017091 0.00000