HEADER OXIDOREDUCTASE 21-MAR-14 4P66 TITLE ELECTROSTATICS OF ACTIVE SITE MICROENVIRONMENTS OF E. COLI DHFR COMPND MOL_ID: 1; COMPND 2 MOLECULE: DIHYDROFOLATE REDUCTASE; COMPND 3 CHAIN: A; COMPND 4 EC: 1.5.1.3; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES; COMPND 7 OTHER_DETAILS: CONTAINS A NITRILE PROBE (XCN) ATTACHED AT POSITION 46 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 GENE: FOLA, ECS0051, LF82_0721; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS OXIDOREDUCTASE, CATALYSIS, ELECTROSTATICS, CATALYTIC CYCLE EXPDTA X-RAY DIFFRACTION AUTHOR C.T.LIU,J.P.LAYFIELD,R.J.STEWART III,J.B.FRENCH,P.HANOIAN,J.B.ASBURY, AUTHOR 2 S.HAMMES-SCHIFFER,S.J.BENKOVIC REVDAT 7 15-NOV-23 4P66 1 REMARK REVDAT 6 27-SEP-23 4P66 1 REMARK LINK REVDAT 5 25-DEC-19 4P66 1 REMARK REVDAT 4 20-SEP-17 4P66 1 SOURCE REMARK REVDAT 3 01-OCT-14 4P66 1 JRNL REVDAT 2 06-AUG-14 4P66 1 AUTHOR REVDAT 1 16-JUL-14 4P66 0 JRNL AUTH C.T.LIU,J.P.LAYFIELD,R.J.STEWART,J.B.FRENCH,P.HANOIAN, JRNL AUTH 2 J.B.ASBURY,S.HAMMES-SCHIFFER,S.J.BENKOVIC JRNL TITL PROBING THE ELECTROSTATICS OF ACTIVE SITE MICROENVIRONMENTS JRNL TITL 2 ALONG THE CATALYTIC CYCLE FOR ESCHERICHIA COLI DIHYDROFOLATE JRNL TITL 3 REDUCTASE. JRNL REF J.AM.CHEM.SOC. V. 136 10349 2014 JRNL REFN ESSN 1520-5126 JRNL PMID 24977791 JRNL DOI 10.1021/JA5038947 REMARK 2 REMARK 2 RESOLUTION. 1.84 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.5.0110 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) : 1.84 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 49.21 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 96.7 REMARK 3 NUMBER OF REFLECTIONS : 13352 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) : 0.190 REMARK 3 R VALUE (WORKING SET) : 0.188 REMARK 3 FREE R VALUE : 0.229 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 668 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) : 1.84 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.89 REMARK 3 REFLECTION IN BIN (WORKING SET) : 828 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 86.20 REMARK 3 BIN R VALUE (WORKING SET) : 0.1980 REMARK 3 BIN FREE R VALUE SET COUNT : 40 REMARK 3 BIN FREE R VALUE : 0.3020 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1239 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 83 REMARK 3 SOLVENT ATOMS : 88 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 17.67 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.41000 REMARK 3 B22 (A**2) : 1.02000 REMARK 3 B33 (A**2) : -0.61000 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.159 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.145 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.090 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.874 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.952 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.921 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1360 ; 0.014 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): 879 ; 0.006 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1858 ; 1.531 ; 2.020 REMARK 3 BOND ANGLES OTHERS (DEGREES): 2139 ; 1.084 ; 3.019 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 156 ; 5.617 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 57 ;36.705 ;24.035 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 196 ;13.479 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 7 ;10.051 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 200 ; 0.093 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1477 ; 0.006 ; 0.021 REMARK 3 GENERAL PLANES OTHERS (A): 269 ; 0.002 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): NULL ; NULL ; NULL 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): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL 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): 801 ; 0.884 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 321 ; 0.214 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1284 ; 1.670 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 559 ; 2.302 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 574 ; 3.632 ; 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 : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS U VALUES : REFINED INDIVIDUALLY REMARK 4 REMARK 4 4P66 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-MAR-14. REMARK 100 THE DEPOSITION ID IS D_1000200787. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 12-JUL-13 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : CHESS REMARK 200 BEAMLINE : A1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.978 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 210 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13385 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.830 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.3 REMARK 200 DATA REDUNDANCY : 3.900 REMARK 200 R MERGE (I) : 0.10700 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 16.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.83 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.86 REMARK 200 COMPLETENESS FOR SHELL (%) : 93.8 REMARK 200 DATA REDUNDANCY IN SHELL : 3.50 REMARK 200 R MERGE FOR SHELL (I) : 0.31100 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 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: NULL REMARK 200 STARTING MODEL: 4GH8 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.72 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.11 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 100 MM CALCIUM ACETATE 34% PEG 400 100 REMARK 280 MM HEPES, PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 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 17.20550 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 49.21400 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 22.43050 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 49.21400 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 17.20550 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 22.43050 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 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 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 GLU A 17 CG CD OE1 OE2 REMARK 470 ASN A 18 CG OD1 ND2 REMARK 470 ASN A 23 CG OD1 ND2 REMARK 470 ARG A 33 CD NE CZ NH1 NH2 REMARK 470 ARG A 52 CG CD NE CZ NH1 NH2 REMARK 470 GLN A 108 CG CD OE1 NE2 REMARK 470 GLU A 118 CG CD OE1 OE2 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 XCN A 46 CA - C - N ANGL. DEV. = 15.7 DEGREES REMARK 500 XCN A 46 O - C - N ANGL. DEV. = -24.0 DEGREES REMARK 500 TRP A 47 C - N - CA ANGL. DEV. = 29.4 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 XCN A 46 -17.36 REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 203 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 116 O REMARK 620 2 ARG A 159 OXT 14.9 REMARK 620 3 HOH A 301 O 143.1 140.8 REMARK 620 4 HOH A 315 O 75.7 75.4 67.5 REMARK 620 5 HOH A 333 O 147.9 145.2 69.0 136.3 REMARK 620 6 HOH A 337 O 89.9 75.0 92.2 89.4 89.2 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 204 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 305 O REMARK 620 2 HOH A 313 O 80.0 REMARK 620 3 HOH A 342 O 105.5 158.6 REMARK 620 N 1 2 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MTX A 201 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue NAP A 202 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CA A 203 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CA A 204 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 4P68 RELATED DB: PDB DBREF 4P66 A 1 159 UNP C3TR70 C3TR70_ECOLX 1 159 SEQADV 4P66 XCN A 46 UNP C3TR70 THR 46 ENGINEERED MUTATION SEQADV 4P66 ALA A 85 UNP C3TR70 CYS 85 ENGINEERED MUTATION SEQADV 4P66 SER A 152 UNP C3TR70 CYS 152 ENGINEERED MUTATION SEQRES 1 A 159 MET ILE SER LEU ILE ALA ALA LEU ALA VAL ASP ARG VAL SEQRES 2 A 159 ILE GLY MET GLU ASN ALA MET PRO TRP ASN LEU PRO ALA SEQRES 3 A 159 ASP LEU ALA TRP PHE LYS ARG ASN THR LEU ASN LYS PRO SEQRES 4 A 159 VAL ILE MET GLY ARG HIS XCN TRP GLU SER ILE GLY ARG SEQRES 5 A 159 PRO LEU PRO GLY ARG LYS ASN ILE ILE LEU SER SER GLN SEQRES 6 A 159 PRO GLY THR ASP ASP ARG VAL THR TRP VAL LYS SER VAL SEQRES 7 A 159 ASP GLU ALA ILE ALA ALA ALA GLY ASP VAL PRO GLU ILE SEQRES 8 A 159 MET VAL ILE GLY GLY GLY ARG VAL TYR GLU GLN PHE LEU SEQRES 9 A 159 PRO LYS ALA GLN LYS LEU TYR LEU THR HIS ILE ASP ALA SEQRES 10 A 159 GLU VAL GLU GLY ASP THR HIS PHE PRO ASP TYR GLU PRO SEQRES 11 A 159 ASP ASP TRP GLU SER VAL PHE SER GLU PHE HIS ASP ALA SEQRES 12 A 159 ASP ALA GLN ASN SER HIS SER TYR SER PHE GLU ILE LEU SEQRES 13 A 159 GLU ARG ARG HET XCN A 46 8 HET MTX A 201 33 HET NAP A 202 48 HET CA A 203 1 HET CA A 204 1 HETNAM XCN S-CYANO-L-CYSTEINE HETNAM MTX METHOTREXATE HETNAM NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE HETNAM CA CALCIUM ION HETSYN NAP 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE FORMUL 1 XCN C4 H6 N2 O2 S FORMUL 2 MTX C20 H22 N8 O5 FORMUL 3 NAP C21 H28 N7 O17 P3 FORMUL 4 CA 2(CA 2+) FORMUL 6 HOH *88(H2 O) HELIX 1 AA1 ALA A 9 ASP A 11 5 3 HELIX 2 AA2 LEU A 24 LEU A 36 1 13 HELIX 3 AA3 ARG A 44 GLY A 51 1 8 HELIX 4 AA4 SER A 77 GLY A 86 1 10 HELIX 5 AA5 GLY A 96 LEU A 104 1 9 HELIX 6 AA6 PRO A 105 ALA A 107 5 3 HELIX 7 AA7 GLU A 129 ASP A 131 5 3 SHEET 1 AA1 8 THR A 73 VAL A 75 0 SHEET 2 AA1 8 ASN A 59 LEU A 62 1 N ILE A 61 O THR A 73 SHEET 3 AA1 8 VAL A 40 GLY A 43 1 N MET A 42 O LEU A 62 SHEET 4 AA1 8 ILE A 91 GLY A 95 1 O MET A 92 N ILE A 41 SHEET 5 AA1 8 ILE A 2 LEU A 8 1 N SER A 3 O VAL A 93 SHEET 6 AA1 8 LYS A 109 ILE A 115 1 O TYR A 111 N LEU A 4 SHEET 7 AA1 8 TYR A 151 ARG A 158 -1 O GLU A 154 N LEU A 112 SHEET 8 AA1 8 TRP A 133 HIS A 141 -1 N VAL A 136 O ILE A 155 SHEET 1 AA2 2 VAL A 13 GLY A 15 0 SHEET 2 AA2 2 THR A 123 HIS A 124 -1 O THR A 123 N ILE A 14 LINK C HIS A 45 N XCN A 46 1555 1555 1.27 LINK C XCN A 46 N TRP A 47 1555 1555 1.35 LINK O ASP A 116 CA CA A 203 1555 1555 2.29 LINK OXT ARG A 159 CA CA A 203 1555 1455 2.49 LINK CA CA A 203 O HOH A 301 1555 3545 2.41 LINK CA CA A 203 O HOH A 315 1555 3545 2.33 LINK CA CA A 203 O HOH A 333 1555 1555 2.46 LINK CA CA A 203 O HOH A 337 1555 1555 2.61 LINK CA CA A 204 O HOH A 305 1555 1555 2.30 LINK CA CA A 204 O HOH A 313 1555 3445 2.38 LINK CA CA A 204 O HOH A 342 1555 1555 2.43 CISPEP 1 GLY A 95 GLY A 96 0 0.60 SITE 1 AC1 15 ILE A 5 ALA A 6 MET A 20 ASP A 27 SITE 2 AC1 15 LEU A 28 PHE A 31 LYS A 32 XCN A 46 SITE 3 AC1 15 ARG A 57 ILE A 94 TYR A 100 THR A 113 SITE 4 AC1 15 NAP A 202 HOH A 316 HOH A 346 SITE 1 AC2 30 ALA A 6 ALA A 7 ILE A 14 GLY A 15 SITE 2 AC2 30 MET A 16 ASN A 18 ALA A 19 GLY A 43 SITE 3 AC2 30 ARG A 44 HIS A 45 XCN A 46 LEU A 62 SITE 4 AC2 30 SER A 63 SER A 64 GLN A 65 LYS A 76 SITE 5 AC2 30 ILE A 94 GLY A 96 GLY A 97 ARG A 98 SITE 6 AC2 30 VAL A 99 TYR A 100 GLN A 102 ASP A 131 SITE 7 AC2 30 MTX A 201 HOH A 308 HOH A 327 HOH A 329 SITE 8 AC2 30 HOH A 350 HOH A 385 SITE 1 AC3 7 ASP A 116 HIS A 149 ARG A 159 HOH A 301 SITE 2 AC3 7 HOH A 315 HOH A 333 HOH A 337 SITE 1 AC4 3 HOH A 305 HOH A 313 HOH A 342 CRYST1 34.411 44.861 98.428 90.00 90.00 90.00 P 21 21 21 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 0.029060 0.000000 0.000000 0.00000 SCALE2 0.000000 0.022291 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010160 0.00000