HEADER OXIDOREDUCTASE 03-SEP-09 3IX9 TITLE CRYSTAL STRUCTURE OF STREPTOCOCCUS PNEUMONIAE DIHYDROFOLATE REDUCTASE TITLE 2 - SP9 MUTANT COMPND MOL_ID: 1; COMPND 2 MOLECULE: DIHYDROFOLATE REDUCTASE; COMPND 3 CHAIN: A, B; COMPND 4 EC: 1.5.1.3; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOCOCCUS PNEUMONIAE; SOURCE 3 ORGANISM_TAXID: 1313; SOURCE 4 GENE: DFR; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: ER2566, DTHYDFOL; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET28A KEYWDS CENTRAL BETA SHEET SURROUNDED BY 4 ALPHA HELICES, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR N.H.YENNAWAR REVDAT 3 06-SEP-23 3IX9 1 REMARK REVDAT 2 13-OCT-21 3IX9 1 REMARK SEQADV REVDAT 1 02-FEB-10 3IX9 0 JRNL AUTH J.LEE,N.H.YENNAWAR,J.GAM,S.J.BENKOVIC JRNL TITL KINETIC AND STRUCTURAL CHARACTERIZATION OF DIHYDROFOLATE JRNL TITL 2 REDUCTASE FROM STREPTOCOCCUS PNEUMONIAE JRNL REF BIOCHEMISTRY V. 49 195 2010 JRNL REFN ISSN 0006-2960 JRNL PMID 19950924 JRNL DOI 10.1021/BI901614M REMARK 2 REMARK 2 RESOLUTION. 1.95 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.2 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) : 1.95 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 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) (%) : 92.6 REMARK 3 NUMBER OF REFLECTIONS : 28610 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 SET) : 0.237 REMARK 3 FREE R VALUE : 0.274 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.600 REMARK 3 FREE R VALUE TEST SET COUNT : 1424 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 : 2750 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 162 REMARK 3 SOLVENT ATOMS : 306 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 8.18200 REMARK 3 B22 (A**2) : -3.60000 REMARK 3 B33 (A**2) : -4.58100 REMARK 3 B12 (A**2) : 0.00000 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) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.520 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL 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) : 2.521 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 3.232 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.577 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 4.484 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : 0.45 REMARK 3 BSOL : 74.38 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: NULL REMARK 4 REMARK 4 3IX9 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-SEP-09. REMARK 100 THE DEPOSITION ID IS D_1000054979. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-JUL-08 REMARK 200 TEMPERATURE (KELVIN) : 93 REMARK 200 PH : 4.0 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 MICROMAX-007 HF REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : RIGAKU SATURN 944+ REMARK 200 INTENSITY-INTEGRATION SOFTWARE : CRYSTALCLEAR REMARK 200 DATA SCALING SOFTWARE : CRYSTALCLEAR REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 28610 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.950 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 (%) : 92.6 REMARK 200 DATA REDUNDANCY : 2.340 REMARK 200 R MERGE (I) : 0.10200 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 5.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.95 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.02 REMARK 200 COMPLETENESS FOR SHELL (%) : 92.6 REMARK 200 DATA REDUNDANCY IN SHELL : 1.41 REMARK 200 R MERGE FOR SHELL (I) : 0.21000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.400 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 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.07 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.32 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1M LITHIUM CHLORIDE, 0.1M SODIUM REMARK 280 CITRATE PH 4.0, 20% PEG 6000, VAPOR DIFFUSION, SITTING DROP, REMARK 280 TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 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 30.91900 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 46.81950 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 30.91900 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 46.81950 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2, 3 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 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 REMARK 350 BIOMOLECULE: 3 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 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 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 MET A -19 REMARK 465 LYS A -18 REMARK 465 HIS A -17 REMARK 465 HIS A -16 REMARK 465 HIS A -15 REMARK 465 HIS A -14 REMARK 465 HIS A -13 REMARK 465 HIS A -12 REMARK 465 HIS A -11 REMARK 465 HIS A -10 REMARK 465 GLY A -9 REMARK 465 GLY A -8 REMARK 465 LEU A -7 REMARK 465 VAL A -6 REMARK 465 PRO A -5 REMARK 465 ARG A -4 REMARK 465 GLY A -3 REMARK 465 SER A -2 REMARK 465 HIS A -1 REMARK 465 GLY A 0 REMARK 465 MET A 1 REMARK 465 VAL A 168 REMARK 465 LEU A 169 REMARK 465 GLU A 170 REMARK 465 MET B -19 REMARK 465 LYS B -18 REMARK 465 HIS B -17 REMARK 465 HIS B -16 REMARK 465 HIS B -15 REMARK 465 HIS B -14 REMARK 465 HIS B -13 REMARK 465 HIS B -12 REMARK 465 HIS B -11 REMARK 465 HIS B -10 REMARK 465 GLY B -9 REMARK 465 GLY B -8 REMARK 465 LEU B -7 REMARK 465 VAL B -6 REMARK 465 PRO B -5 REMARK 465 ARG B -4 REMARK 465 GLY B -3 REMARK 465 SER B -2 REMARK 465 HIS B -1 REMARK 465 GLY B 0 REMARK 465 MET B 1 REMARK 465 VAL B 168 REMARK 465 LEU B 169 REMARK 465 GLU B 170 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 THR A 2 OG1 CG2 REMARK 470 THR B 2 OG1 CG2 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 GLY B 102 N - CA - C ANGL. DEV. = -15.3 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 GLU A 71 127.31 -39.22 REMARK 500 ILE A 74 -99.37 -131.45 REMARK 500 ASP A 75 -138.60 -104.43 REMARK 500 SER A 144 162.89 179.78 REMARK 500 LYS A 166 -169.53 -79.38 REMARK 500 PRO B 24 42.96 -75.86 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 193 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTX A 200 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NDP B 193 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTX B 200 DBREF 3IX9 A 1 168 UNP O85261 O85261_STRPN 1 168 DBREF 3IX9 B 1 168 UNP O85261 O85261_STRPN 1 168 SEQADV 3IX9 MET A -19 UNP O85261 EXPRESSION TAG SEQADV 3IX9 LYS A -18 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -17 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -16 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -15 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -14 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -13 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -12 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -11 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -10 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY A -9 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY A -8 UNP O85261 EXPRESSION TAG SEQADV 3IX9 LEU A -7 UNP O85261 EXPRESSION TAG SEQADV 3IX9 VAL A -6 UNP O85261 EXPRESSION TAG SEQADV 3IX9 PRO A -5 UNP O85261 EXPRESSION TAG SEQADV 3IX9 ARG A -4 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY A -3 UNP O85261 EXPRESSION TAG SEQADV 3IX9 SER A -2 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS A -1 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY A 0 UNP O85261 EXPRESSION TAG SEQADV 3IX9 TYR A 26 UNP O85261 HIS 26 ENGINEERED MUTATION SEQADV 3IX9 LYS A 60 UNP O85261 GLN 60 ENGINEERED MUTATION SEQADV 3IX9 VAL A 77 UNP O85261 ALA 77 ENGINEERED MUTATION SEQADV 3IX9 ALA A 78 UNP O85261 VAL 78 ENGINEERED MUTATION SEQADV 3IX9 HIS A 81 UNP O85261 GLN 81 ENGINEERED MUTATION SEQADV 3IX9 SER A 91 UNP O85261 GLN 91 ENGINEERED MUTATION SEQADV 3IX9 VAL A 100 UNP O85261 LEU 100 ENGINEERED MUTATION SEQADV 3IX9 ALA A 133 UNP O85261 GLU 133 ENGINEERED MUTATION SEQADV 3IX9 THR A 149 UNP O85261 ALA 149 ENGINEERED MUTATION SEQADV 3IX9 LEU A 169 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLU A 170 UNP O85261 EXPRESSION TAG SEQADV 3IX9 MET B -19 UNP O85261 EXPRESSION TAG SEQADV 3IX9 LYS B -18 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -17 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -16 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -15 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -14 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -13 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -12 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -11 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -10 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY B -9 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY B -8 UNP O85261 EXPRESSION TAG SEQADV 3IX9 LEU B -7 UNP O85261 EXPRESSION TAG SEQADV 3IX9 VAL B -6 UNP O85261 EXPRESSION TAG SEQADV 3IX9 PRO B -5 UNP O85261 EXPRESSION TAG SEQADV 3IX9 ARG B -4 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY B -3 UNP O85261 EXPRESSION TAG SEQADV 3IX9 SER B -2 UNP O85261 EXPRESSION TAG SEQADV 3IX9 HIS B -1 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLY B 0 UNP O85261 EXPRESSION TAG SEQADV 3IX9 TYR B 26 UNP O85261 HIS 26 ENGINEERED MUTATION SEQADV 3IX9 LYS B 60 UNP O85261 GLN 60 ENGINEERED MUTATION SEQADV 3IX9 VAL B 77 UNP O85261 ALA 77 ENGINEERED MUTATION SEQADV 3IX9 ALA B 78 UNP O85261 VAL 78 ENGINEERED MUTATION SEQADV 3IX9 HIS B 81 UNP O85261 GLN 81 ENGINEERED MUTATION SEQADV 3IX9 SER B 91 UNP O85261 GLN 91 ENGINEERED MUTATION SEQADV 3IX9 VAL B 100 UNP O85261 LEU 100 ENGINEERED MUTATION SEQADV 3IX9 ALA B 133 UNP O85261 GLU 133 ENGINEERED MUTATION SEQADV 3IX9 THR B 149 UNP O85261 ALA 149 ENGINEERED MUTATION SEQADV 3IX9 LEU B 169 UNP O85261 EXPRESSION TAG SEQADV 3IX9 GLU B 170 UNP O85261 EXPRESSION TAG SEQRES 1 A 190 MET LYS HIS HIS HIS HIS HIS HIS HIS HIS GLY GLY LEU SEQRES 2 A 190 VAL PRO ARG GLY SER HIS GLY MET THR LYS LYS ILE VAL SEQRES 3 A 190 ALA ILE TRP ALA GLN ASP GLU GLU GLY VAL ILE GLY LYS SEQRES 4 A 190 ASP ASN ARG LEU PRO TRP TYR LEU PRO ALA GLU LEU GLN SEQRES 5 A 190 HIS PHE LYS GLU THR THR LEU ASN HIS ALA ILE LEU MET SEQRES 6 A 190 GLY ARG VAL THR PHE ASP GLY MET GLY ARG ARG LEU LEU SEQRES 7 A 190 PRO LYS ARG GLU THR LEU ILE LEU THR ARG ASN PRO GLU SEQRES 8 A 190 GLU LYS ILE ASP GLY VAL ALA THR PHE HIS ASP VAL GLN SEQRES 9 A 190 SER VAL LEU ASP TRP TYR SER ALA GLN GLU LYS ASN LEU SEQRES 10 A 190 TYR ILE VAL GLY GLY LYS GLN ILE PHE GLN ALA PHE GLU SEQRES 11 A 190 PRO TYR LEU ASP GLU VAL ILE VAL THR HIS ILE HIS ALA SEQRES 12 A 190 ARG VAL GLU GLY ASP THR TYR PHE PRO ALA GLU PHE ASP SEQRES 13 A 190 LEU SER LEU PHE GLU THR VAL SER SER LYS PHE TYR THR SEQRES 14 A 190 LYS ASP GLU LYS ASN PRO TYR ASP PHE THR ILE GLN TYR SEQRES 15 A 190 ARG LYS ARG LYS GLU VAL LEU GLU SEQRES 1 B 190 MET LYS HIS HIS HIS HIS HIS HIS HIS HIS GLY GLY LEU SEQRES 2 B 190 VAL PRO ARG GLY SER HIS GLY MET THR LYS LYS ILE VAL SEQRES 3 B 190 ALA ILE TRP ALA GLN ASP GLU GLU GLY VAL ILE GLY LYS SEQRES 4 B 190 ASP ASN ARG LEU PRO TRP TYR LEU PRO ALA GLU LEU GLN SEQRES 5 B 190 HIS PHE LYS GLU THR THR LEU ASN HIS ALA ILE LEU MET SEQRES 6 B 190 GLY ARG VAL THR PHE ASP GLY MET GLY ARG ARG LEU LEU SEQRES 7 B 190 PRO LYS ARG GLU THR LEU ILE LEU THR ARG ASN PRO GLU SEQRES 8 B 190 GLU LYS ILE ASP GLY VAL ALA THR PHE HIS ASP VAL GLN SEQRES 9 B 190 SER VAL LEU ASP TRP TYR SER ALA GLN GLU LYS ASN LEU SEQRES 10 B 190 TYR ILE VAL GLY GLY LYS GLN ILE PHE GLN ALA PHE GLU SEQRES 11 B 190 PRO TYR LEU ASP GLU VAL ILE VAL THR HIS ILE HIS ALA SEQRES 12 B 190 ARG VAL GLU GLY ASP THR TYR PHE PRO ALA GLU PHE ASP SEQRES 13 B 190 LEU SER LEU PHE GLU THR VAL SER SER LYS PHE TYR THR SEQRES 14 B 190 LYS ASP GLU LYS ASN PRO TYR ASP PHE THR ILE GLN TYR SEQRES 15 B 190 ARG LYS ARG LYS GLU VAL LEU GLU HET NDP A 193 48 HET MTX A 200 33 HET NDP B 193 48 HET MTX B 200 33 HETNAM NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE HETNAM 2 NDP PHOSPHATE HETNAM MTX METHOTREXATE FORMUL 3 NDP 2(C21 H30 N7 O17 P3) FORMUL 4 MTX 2(C20 H22 N8 O5) FORMUL 7 HOH *306(H2 O) HELIX 1 1 LEU A 27 LEU A 39 1 13 HELIX 2 2 ARG A 47 MET A 53 1 7 HELIX 3 3 ASP A 82 ALA A 92 1 11 HELIX 4 4 GLY A 102 GLU A 110 1 9 HELIX 5 5 PRO A 111 LEU A 113 5 3 HELIX 6 6 ASP A 136 SER A 138 5 3 HELIX 7 7 LEU B 27 LEU B 39 1 13 HELIX 8 8 ARG B 47 MET B 53 1 7 HELIX 9 9 ASP B 82 ALA B 92 1 11 HELIX 10 10 GLY B 102 GLU B 110 1 9 HELIX 11 11 PRO B 111 LEU B 113 5 3 HELIX 12 12 ASP B 136 SER B 138 5 3 SHEET 1 A 8 ALA A 78 PHE A 80 0 SHEET 2 A 8 GLU A 62 LEU A 66 1 N ILE A 65 O ALA A 78 SHEET 3 A 8 ALA A 42 GLY A 46 1 N ILE A 43 O LEU A 64 SHEET 4 A 8 LEU A 97 GLY A 101 1 O TYR A 98 N LEU A 44 SHEET 5 A 8 ILE A 5 GLN A 11 1 N VAL A 6 O LEU A 97 SHEET 6 A 8 GLU A 115 ILE A 121 1 O THR A 119 N TRP A 9 SHEET 7 A 8 PHE A 158 ARG A 165 -1 O THR A 159 N HIS A 120 SHEET 8 A 8 PHE A 140 TYR A 148 -1 N SER A 144 O TYR A 162 SHEET 1 B 2 VAL A 16 GLY A 18 0 SHEET 2 B 2 THR A 129 TYR A 130 -1 O THR A 129 N ILE A 17 SHEET 1 C 8 ALA B 78 PHE B 80 0 SHEET 2 C 8 GLU B 62 LEU B 66 1 N ILE B 65 O ALA B 78 SHEET 3 C 8 ALA B 42 GLY B 46 1 N ILE B 43 O LEU B 64 SHEET 4 C 8 LEU B 97 GLY B 101 1 O TYR B 98 N LEU B 44 SHEET 5 C 8 ILE B 5 GLN B 11 1 N VAL B 6 O ILE B 99 SHEET 6 C 8 GLU B 115 ILE B 121 1 O ILE B 121 N GLN B 11 SHEET 7 C 8 PHE B 158 ARG B 165 -1 O THR B 159 N HIS B 120 SHEET 8 C 8 PHE B 140 TYR B 148 -1 N VAL B 143 O TYR B 162 SHEET 1 D 2 VAL B 16 GLY B 18 0 SHEET 2 D 2 THR B 129 TYR B 130 -1 O THR B 129 N ILE B 17 SITE 1 AC1 32 TRP A 9 ALA A 10 ILE A 17 GLY A 18 SITE 2 AC1 32 ASN A 21 ARG A 22 LEU A 23 GLY A 46 SITE 3 AC1 32 ARG A 47 VAL A 48 THR A 49 LEU A 66 SITE 4 AC1 32 THR A 67 ARG A 68 HIS A 81 VAL A 100 SITE 5 AC1 32 GLY A 101 GLY A 102 LYS A 103 GLN A 104 SITE 6 AC1 32 ILE A 105 HOH A 176 HOH A 182 MTX A 200 SITE 7 AC1 32 HOH A 208 HOH A 222 HOH A 270 HOH A 275 SITE 8 AC1 32 HOH A 277 HOH A 281 HOH A 297 HOH A 308 SITE 1 AC2 17 ILE A 8 TRP A 9 LEU A 23 GLU A 30 SITE 2 AC2 17 GLN A 32 PHE A 34 LYS A 35 ARG A 61 SITE 3 AC2 17 VAL A 100 HOH A 187 HOH A 190 HOH A 192 SITE 4 AC2 17 NDP A 193 HOH A 206 HOH A 207 HOH A 215 SITE 5 AC2 17 HOH A 330 SITE 1 AC3 35 ASN A 40 HOH A 185 HOH A 210 HOH A 218 SITE 2 AC3 35 TRP B 9 ALA B 10 ILE B 17 GLY B 18 SITE 3 AC3 35 LYS B 19 ASN B 21 ARG B 22 LEU B 23 SITE 4 AC3 35 TRP B 25 GLY B 46 ARG B 47 VAL B 48 SITE 5 AC3 35 THR B 49 LEU B 66 THR B 67 ARG B 68 SITE 6 AC3 35 HIS B 81 VAL B 100 GLY B 101 GLY B 102 SITE 7 AC3 35 LYS B 103 GLN B 104 ILE B 105 HOH B 182 SITE 8 AC3 35 HOH B 187 HOH B 197 MTX B 200 HOH B 205 SITE 9 AC3 35 HOH B 231 HOH B 246 HOH B 277 SITE 1 AC4 18 HOH A 280 ILE B 8 TRP B 9 LEU B 23 SITE 2 AC4 18 PRO B 28 GLU B 30 LEU B 31 GLN B 32 SITE 3 AC4 18 PHE B 34 LYS B 35 ARG B 56 ARG B 61 SITE 4 AC4 18 VAL B 100 THR B 119 HOH B 188 NDP B 193 SITE 5 AC4 18 HOH B 236 HOH B 244 CRYST1 61.838 93.639 71.367 90.00 90.00 90.00 P 21 21 2 8 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 0.016171 0.000000 0.000000 0.00000 SCALE2 0.000000 0.010679 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014012 0.00000