HEADER OXIDOREDUCTASE 02-AUG-04 1U72 TITLE UNDERSTANDING THE ROLE OF LEU22 VARIANTS IN METHOTREXATE RESISTANCE: TITLE 2 COMPARISON OF WILD-TYPE AND LEU22ARG VARIANT MOUSE AND HUMAN TITLE 3 DIHYDRFOLATE REDUCTASE TERNARY CRYSTAL COMPLEXES WITH METHOTREXATE TITLE 4 AND NADPH COMPND MOL_ID: 1; COMPND 2 MOLECULE: DIHYDROFOLATE REDUCTASE; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: HUMAN DHFR; COMPND 5 EC: 1.5.1.3; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: DHFR; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS WILD TYPE HUMAND DHFR, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR V.CODY REVDAT 3 14-FEB-24 1U72 1 REMARK REVDAT 2 24-FEB-09 1U72 1 VERSN REVDAT 1 01-FEB-05 1U72 0 JRNL AUTH V.CODY,J.R.LUFT,W.PANGBORN JRNL TITL UNDERSTANDING THE ROLE OF LEU22 VARIANTS IN METHOTREXATE JRNL TITL 2 RESISTANCE: COMPARISON OF WILD-TYPE AND LEU22ARG VARIANT JRNL TITL 3 MOUSE AND HUMAN DIHYDROFOLATE REDUCTASE TERNARY CRYSTAL JRNL TITL 4 COMPLEXES WITH METHOTREXATE AND NADPH. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 61 147 2005 JRNL REFN ISSN 0907-4449 JRNL PMID 15681865 JRNL DOI 10.1107/S0907444904030422 REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 50.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 6203 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.159 REMARK 3 FREE R VALUE : 0.213 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 6408 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1502 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 81 REMARK 3 SOLVENT ATOMS : 46 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 26.50 REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : NULL ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 0.053 ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : 0.231 ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1U72 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-AUG-04. REMARK 100 THE DEPOSITION ID IS D_1000023326. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 06-FEB-98 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 8.0 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) : 1.5414 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 6408 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.3 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.04900 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 55.9 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 : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PROTEIN REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 53.41 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.64 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 63% AS, 0.1 M PHOSHATE PH 8.0 , VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3 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+2/3,Y+1/3,Z+1/3 REMARK 290 5555 -Y+2/3,X-Y+1/3,Z+1/3 REMARK 290 6555 -X+Y+2/3,-X+1/3,Z+1/3 REMARK 290 7555 X+1/3,Y+2/3,Z+2/3 REMARK 290 8555 -Y+1/3,X-Y+2/3,Z+2/3 REMARK 290 9555 -X+Y+1/3,-X+2/3,Z+2/3 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 43.68950 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 25.22414 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 25.57367 REMARK 290 SMTRY1 5 -0.500000 -0.866025 0.000000 43.68950 REMARK 290 SMTRY2 5 0.866025 -0.500000 0.000000 25.22414 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 25.57367 REMARK 290 SMTRY1 6 -0.500000 0.866025 0.000000 43.68950 REMARK 290 SMTRY2 6 -0.866025 -0.500000 0.000000 25.22414 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 25.57367 REMARK 290 SMTRY1 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 50.44829 REMARK 290 SMTRY3 7 0.000000 0.000000 1.000000 51.14733 REMARK 290 SMTRY1 8 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 8 0.866025 -0.500000 0.000000 50.44829 REMARK 290 SMTRY3 8 0.000000 0.000000 1.000000 51.14733 REMARK 290 SMTRY1 9 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 -0.500000 0.000000 50.44829 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 51.14733 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: 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 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 ND1 HIS A 130 O LYS A 184 2.04 REMARK 500 O LEU A 159 O HOH A 212 2.06 REMARK 500 O ASP A 168 NE2 GLN A 170 2.06 REMARK 500 REMARK 500 REMARK: NULL 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 LYS A 18 N - CA - CB ANGL. DEV. = 13.0 DEGREES REMARK 500 ARG A 32 NE - CZ - NH1 ANGL. DEV. = 7.3 DEGREES REMARK 500 ARG A 32 NE - CZ - NH2 ANGL. DEV. = -3.1 DEGREES REMARK 500 TYR A 33 CB - CG - CD2 ANGL. DEV. = -4.3 DEGREES REMARK 500 ARG A 36 NE - CZ - NH2 ANGL. DEV. = 4.1 DEGREES REMARK 500 ARG A 65 NE - CZ - NH1 ANGL. DEV. = 6.1 DEGREES REMARK 500 ARG A 65 NE - CZ - NH2 ANGL. DEV. = -3.1 DEGREES REMARK 500 LEU A 67 O - C - N ANGL. DEV. = 11.2 DEGREES REMARK 500 ARG A 77 NE - CZ - NH1 ANGL. DEV. = 4.8 DEGREES REMARK 500 GLU A 78 CG - CD - OE1 ANGL. DEV. = 12.2 DEGREES REMARK 500 ARG A 91 CD - NE - CZ ANGL. DEV. = 8.7 DEGREES REMARK 500 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 6.8 DEGREES REMARK 500 ARG A 91 NE - CZ - NH2 ANGL. DEV. = -7.4 DEGREES REMARK 500 ASP A 95 CB - CG - OD1 ANGL. DEV. = -7.8 DEGREES REMARK 500 ASP A 110 CB - CG - OD1 ANGL. DEV. = 6.4 DEGREES REMARK 500 VAL A 120 O - C - N ANGL. DEV. = 9.9 DEGREES REMARK 500 MET A 125 CA - CB - CG ANGL. DEV. = 17.4 DEGREES REMARK 500 ASN A 126 CA - CB - CG ANGL. DEV. = 15.9 DEGREES REMARK 500 LYS A 132 O - C - N ANGL. DEV. = 10.2 DEGREES REMARK 500 LEU A 133 CA - CB - CG ANGL. DEV. = 27.1 DEGREES REMARK 500 GLN A 140 N - CA - CB ANGL. DEV. = 13.5 DEGREES REMARK 500 ASP A 141 CB - CG - OD1 ANGL. DEV. = 7.1 DEGREES REMARK 500 ASP A 145 CA - CB - CG ANGL. DEV. = 13.9 DEGREES REMARK 500 ASP A 145 OD1 - CG - OD2 ANGL. DEV. = -13.1 DEGREES REMARK 500 ASP A 145 CB - CG - OD1 ANGL. DEV. = 11.9 DEGREES REMARK 500 GLU A 154 CA - CB - CG ANGL. DEV. = 14.5 DEGREES REMARK 500 TYR A 156 CB - CG - CD2 ANGL. DEV. = 4.5 DEGREES REMARK 500 TYR A 156 CB - CG - CD1 ANGL. DEV. = -4.6 DEGREES REMARK 500 TYR A 162 CB - CG - CD2 ANGL. DEV. = 5.3 DEGREES REMARK 500 TYR A 162 CB - CG - CD1 ANGL. DEV. = -5.5 DEGREES REMARK 500 ASP A 168 OD1 - CG - OD2 ANGL. DEV. = 11.4 DEGREES REMARK 500 ASP A 168 CB - CG - OD2 ANGL. DEV. = -7.3 DEGREES REMARK 500 GLU A 172 CA - CB - CG ANGL. DEV. = 23.8 DEGREES REMARK 500 GLU A 180 CG - CD - OE1 ANGL. DEV. = 12.8 DEGREES REMARK 500 GLU A 180 CG - CD - OE2 ANGL. DEV. = -12.8 DEGREES REMARK 500 TYR A 182 CB - CG - CD1 ANGL. DEV. = -5.4 DEGREES REMARK 500 ASP A 186 CB - CG - OD2 ANGL. DEV. = -5.5 DEGREES REMARK 500 ASP A 186 CA - C - O ANGL. DEV. = -14.8 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 SER A 76 142.80 -179.63 REMARK 500 ASP A 110 -88.62 -97.83 REMARK 500 MET A 139 30.78 -79.50 REMARK 500 ASN A 185 112.57 -177.72 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 NDP A 187 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTX A 188 DBREF 1U72 A 1 186 UNP P00374 DYR_HUMAN 1 186 SEQRES 1 A 186 VAL GLY SER LEU ASN CYS ILE VAL ALA VAL SER GLN ASN SEQRES 2 A 186 MET GLY ILE GLY LYS ASN GLY ASP LEU PRO TRP PRO PRO SEQRES 3 A 186 LEU ARG ASN GLU PHE ARG TYR PHE GLN ARG MET THR THR SEQRES 4 A 186 THR SER SER VAL GLU GLY LYS GLN ASN LEU VAL ILE MET SEQRES 5 A 186 GLY LYS LYS THR TRP PHE SER ILE PRO GLU LYS ASN ARG SEQRES 6 A 186 PRO LEU LYS GLY ARG ILE ASN LEU VAL LEU SER ARG GLU SEQRES 7 A 186 LEU LYS GLU PRO PRO GLN GLY ALA HIS PHE LEU SER ARG SEQRES 8 A 186 SER LEU ASP ASP ALA LEU LYS LEU THR GLU GLN PRO GLU SEQRES 9 A 186 LEU ALA ASN LYS VAL ASP MET VAL TRP ILE VAL GLY GLY SEQRES 10 A 186 SER SER VAL TYR LYS GLU ALA MET ASN HIS PRO GLY HIS SEQRES 11 A 186 LEU LYS LEU PHE VAL THR ARG ILE MET GLN ASP PHE GLU SEQRES 12 A 186 SER ASP THR PHE PHE PRO GLU ILE ASP LEU GLU LYS TYR SEQRES 13 A 186 LYS LEU LEU PRO GLU TYR PRO GLY VAL LEU SER ASP VAL SEQRES 14 A 186 GLN GLU GLU LYS GLY ILE LYS TYR LYS PHE GLU VAL TYR SEQRES 15 A 186 GLU LYS ASN ASP HET NDP A 187 48 HET MTX A 188 33 HETNAM NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE HETNAM 2 NDP PHOSPHATE HETNAM MTX METHOTREXATE FORMUL 2 NDP C21 H30 N7 O17 P3 FORMUL 3 MTX C20 H22 N8 O5 FORMUL 4 HOH *46(H2 O) HELIX 1 1 LEU A 27 THR A 40 1 14 HELIX 2 2 LYS A 54 PHE A 58 1 5 HELIX 3 3 SER A 59 ILE A 60 5 2 HELIX 4 4 PRO A 61 ARG A 65 5 5 HELIX 5 5 SER A 92 LEU A 99 1 8 HELIX 6 6 GLN A 102 ASN A 107 1 6 HELIX 7 7 GLY A 117 MET A 125 1 9 SHEET 1 A 8 PHE A 88 SER A 90 0 SHEET 2 A 8 ARG A 70 LEU A 75 1 N VAL A 74 O PHE A 88 SHEET 3 A 8 GLN A 47 GLY A 53 1 N VAL A 50 O LEU A 73 SHEET 4 A 8 VAL A 109 GLY A 116 1 O TRP A 113 N LEU A 49 SHEET 5 A 8 LEU A 4 SER A 11 1 N ASN A 5 O ILE A 114 SHEET 6 A 8 LEU A 131 ILE A 138 1 O ILE A 138 N VAL A 10 SHEET 7 A 8 ILE A 175 LYS A 184 -1 O LYS A 178 N ARG A 137 SHEET 8 A 8 LYS A 157 LEU A 158 -1 N LYS A 157 O GLU A 183 SHEET 1 B 8 PHE A 88 SER A 90 0 SHEET 2 B 8 ARG A 70 LEU A 75 1 N VAL A 74 O PHE A 88 SHEET 3 B 8 GLN A 47 GLY A 53 1 N VAL A 50 O LEU A 73 SHEET 4 B 8 VAL A 109 GLY A 116 1 O TRP A 113 N LEU A 49 SHEET 5 B 8 LEU A 4 SER A 11 1 N ASN A 5 O ILE A 114 SHEET 6 B 8 LEU A 131 ILE A 138 1 O ILE A 138 N VAL A 10 SHEET 7 B 8 ILE A 175 LYS A 184 -1 O LYS A 178 N ARG A 137 SHEET 8 B 8 GLN A 170 GLU A 172 -1 N GLN A 170 O TYR A 177 SHEET 1 C 2 GLY A 15 GLY A 17 0 SHEET 2 C 2 THR A 146 PHE A 147 -1 O THR A 146 N ILE A 16 CISPEP 1 ARG A 65 PRO A 66 0 0.32 CISPEP 2 GLY A 116 GLY A 117 0 0.42 SITE 1 AC1 28 VAL A 8 ALA A 9 ILE A 16 GLY A 17 SITE 2 AC1 28 GLY A 20 ASP A 21 LEU A 22 TRP A 24 SITE 3 AC1 28 GLY A 53 LYS A 54 LYS A 55 THR A 56 SITE 4 AC1 28 SER A 59 LEU A 75 SER A 76 ARG A 77 SITE 5 AC1 28 GLU A 78 ARG A 91 VAL A 115 GLY A 117 SITE 6 AC1 28 SER A 118 SER A 119 VAL A 120 TYR A 121 SITE 7 AC1 28 THR A 146 MTX A 188 HOH A 194 HOH A 224 SITE 1 AC2 19 ILE A 7 VAL A 8 ALA A 9 LEU A 22 SITE 2 AC2 19 GLU A 30 PHE A 31 PHE A 34 GLN A 35 SITE 3 AC2 19 SER A 59 ILE A 60 PRO A 61 ASN A 64 SITE 4 AC2 19 LEU A 67 ARG A 70 VAL A 115 TYR A 121 SITE 5 AC2 19 THR A 136 NDP A 187 HOH A 198 CRYST1 87.379 87.379 76.721 90.00 90.00 120.00 H 3 9 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 0.011444 0.006607 0.000000 0.00000 SCALE2 0.000000 0.013215 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013034 0.00000