HEADER LYASE 15-OCT-99 1D6S TITLE CRYSTAL STRUCTURE OF THE K41A MUTANT OF O-ACETYLSERINE SULFHYDRYLASE TITLE 2 COMPLEXED IN EXTERNAL ALDIMINE LINKAGE WITH METHIONINE COMPND MOL_ID: 1; COMPND 2 MOLECULE: O-ACETYLSERINE SULFHYDRYLASE; COMPND 3 CHAIN: A, B; COMPND 4 EC: 4.2.99.8; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SALMONELLA TYPHIMURIUM; SOURCE 3 ORGANISM_TAXID: 602; SOURCE 4 STRAIN: DW378; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS CYSTEINE BIOSYNTHESIS, BETA REPLACEMENT ENZYME, PLP, K41A, LYASE EXPDTA X-RAY DIFFRACTION AUTHOR P.BURKHARD,C.H.TAI,C.M.RISTROPH,P.F.COOK,J.N.JANSONIUS REVDAT 5 07-FEB-24 1D6S 1 REMARK REVDAT 4 03-NOV-21 1D6S 1 REMARK SEQADV LINK REVDAT 3 13-JUL-11 1D6S 1 VERSN REVDAT 2 24-FEB-09 1D6S 1 VERSN REVDAT 1 15-APR-00 1D6S 0 JRNL AUTH P.BURKHARD,C.H.TAI,C.M.RISTROPH,P.F.COOK,J.N.JANSONIUS JRNL TITL LIGAND BINDING INDUCES A LARGE CONFORMATIONAL CHANGE IN JRNL TITL 2 O-ACETYLSERINE SULFHYDRYLASE FROM SALMONELLA TYPHIMURIUM. JRNL REF J.MOL.BIOL. V. 291 941 1999 JRNL REFN ISSN 0022-2836 JRNL PMID 10452898 JRNL DOI 10.1006/JMBI.1999.3002 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH P.BURKHARD,G.S.RAO,E.HOHENESTER,K.D.SCHNACKERZ,P.F.COOK, REMARK 1 AUTH 2 J.N.JANSONIUS REMARK 1 TITL THREE-DIMENSIONAL STRUCTURE OF O-ACETYLSERINE SULFHYDRYLASE REMARK 1 TITL 2 FROM SALMONELLA TYPHIMURIUM REMARK 1 REF J.MOL.BIOL. V. 283 121 1998 REMARK 1 REFN ISSN 0022-2836 REMARK 1 DOI 10.1006/JMBI.1998.2037 REMARK 2 REMARK 2 RESOLUTION. 2.30 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) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.67 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 2355706.220 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 90.4 REMARK 3 NUMBER OF REFLECTIONS : 32175 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 SET) : 0.174 REMARK 3 FREE R VALUE : 0.223 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1600 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.006 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.30 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.44 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 57.60 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 3185 REMARK 3 BIN R VALUE (WORKING SET) : 0.2680 REMARK 3 BIN FREE R VALUE : 0.2970 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 173 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.023 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 4834 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 48 REMARK 3 SOLVENT ATOMS : 233 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 15.30 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 33.60 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -10.30000 REMARK 3 B22 (A**2) : -4.79000 REMARK 3 B33 (A**2) : 15.09000 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) : 0.25 REMARK 3 ESD FROM SIGMAA (A) : 0.32 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.31 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.33 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.600 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 23.80 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.520 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED 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 : CONSTRAINED 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : PARAM.PLP REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1D6S COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-OCT-99. REMARK 100 THE DEPOSITION ID IS D_1000009844. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 05-NOV-97 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 7.0 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 : ELLIOTT GX-20 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 : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.10500 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 56.55 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.83 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 30 % PEG 4000 8 % ETHANOL 100 MM TRIS REMARK 280 (PH 7.0) 150 MM LI2SO4, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 297K 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 48.47000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 74.96500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 48.47000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 74.96500 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 7620 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 22320 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -24.0 KCAL/MOL 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 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 PRO A 208 C - N - CA ANGL. DEV. = 9.2 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 ARG A 34 53.23 -91.15 REMARK 500 ASP A 133 79.88 -167.12 REMARK 500 PRO A 134 -6.58 -59.23 REMARK 500 GLN A 141 84.10 61.94 REMARK 500 SER A 144 -8.11 -140.76 REMARK 500 THR A 155 -68.79 -120.18 REMARK 500 SER A 207 61.07 -159.55 REMARK 500 PRO A 208 49.64 -76.27 REMARK 500 THR A 316 -161.06 -109.28 REMARK 500 ASP B 133 81.38 -162.60 REMARK 500 GLN B 141 85.95 57.36 REMARK 500 SER B 207 64.68 -157.61 REMARK 500 THR B 316 -160.54 -108.36 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 MET A 401 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PLP A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PLP B 502 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MET B 402 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1OAS RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF NATIVE O-ACETYLSERINE SULFHYDRYLASE DBREF 1D6S A 1 322 UNP P12674 CYSK_SALTY 1 322 DBREF 1D6S B 1 322 UNP P12674 CYSK_SALTY 1 322 SEQADV 1D6S ALA A 41 UNP P12674 LYS 41 ENGINEERED MUTATION SEQADV 1D6S GLY A 266 UNP P12674 VAL 266 CONFLICT SEQADV 1D6S ILE A 267 UNP P12674 PHE 267 CONFLICT SEQADV 1D6S ALA B 41 UNP P12674 LYS 41 ENGINEERED MUTATION SEQADV 1D6S GLY B 266 UNP P12674 VAL 266 CONFLICT SEQADV 1D6S ILE B 267 UNP P12674 PHE 267 CONFLICT SEQRES 1 A 322 SER LYS ILE TYR GLU ASP ASN SER LEU THR ILE GLY HIS SEQRES 2 A 322 THR PRO LEU VAL ARG LEU ASN ARG ILE GLY ASN GLY ARG SEQRES 3 A 322 ILE LEU ALA LYS VAL GLU SER ARG ASN PRO SER PHE SER SEQRES 4 A 322 VAL ALA CYS ARG ILE GLY ALA ASN MET ILE TRP ASP ALA SEQRES 5 A 322 GLU LYS ARG GLY VAL LEU LYS PRO GLY VAL GLU LEU VAL SEQRES 6 A 322 GLU PRO THR ASN GLY ASN THR GLY ILE ALA LEU ALA TYR SEQRES 7 A 322 VAL ALA ALA ALA ARG GLY TYR LYS LEU THR LEU THR MET SEQRES 8 A 322 PRO GLU THR MET SER ILE GLU ARG ARG LYS LEU LEU LYS SEQRES 9 A 322 ALA LEU GLY ALA ASN LEU VAL LEU THR GLU GLY ALA LYS SEQRES 10 A 322 GLY MET LYS GLY ALA ILE GLN LYS ALA GLU GLU ILE VAL SEQRES 11 A 322 ALA SER ASP PRO GLN LYS TYR LEU LEU LEU GLN GLN PHE SEQRES 12 A 322 SER ASN PRO ALA ASN PRO GLU ILE HIS GLU LYS THR THR SEQRES 13 A 322 GLY PRO GLU ILE TRP GLU ASP THR ASP GLY GLN VAL ASP SEQRES 14 A 322 VAL PHE ILE SER GLY VAL GLY THR GLY GLY THR LEU THR SEQRES 15 A 322 GLY VAL THR ARG TYR ILE LYS GLY THR LYS GLY LYS THR SEQRES 16 A 322 ASP LEU ILE THR VAL ALA VAL GLU PRO THR ASP SER PRO SEQRES 17 A 322 VAL ILE ALA GLN ALA LEU ALA GLY GLU GLU ILE LYS PRO SEQRES 18 A 322 GLY PRO HIS LYS ILE GLN GLY ILE GLY ALA GLY PHE ILE SEQRES 19 A 322 PRO GLY ASN LEU ASP LEU LYS LEU ILE ASP LYS VAL VAL SEQRES 20 A 322 GLY ILE THR ASN GLU GLU ALA ILE SER THR ALA ARG ARG SEQRES 21 A 322 LEU MET GLU GLU GLU GLY ILE LEU ALA GLY ILE SER SER SEQRES 22 A 322 GLY ALA ALA VAL ALA ALA ALA LEU LYS LEU GLN GLU ASP SEQRES 23 A 322 GLU SER PHE THR ASN LYS ASN ILE VAL VAL ILE LEU PRO SEQRES 24 A 322 SER SER GLY GLU ARG TYR LEU SER THR ALA LEU PHE ALA SEQRES 25 A 322 ASP LEU PHE THR GLU LYS GLU LEU GLN GLN SEQRES 1 B 322 SER LYS ILE TYR GLU ASP ASN SER LEU THR ILE GLY HIS SEQRES 2 B 322 THR PRO LEU VAL ARG LEU ASN ARG ILE GLY ASN GLY ARG SEQRES 3 B 322 ILE LEU ALA LYS VAL GLU SER ARG ASN PRO SER PHE SER SEQRES 4 B 322 VAL ALA CYS ARG ILE GLY ALA ASN MET ILE TRP ASP ALA SEQRES 5 B 322 GLU LYS ARG GLY VAL LEU LYS PRO GLY VAL GLU LEU VAL SEQRES 6 B 322 GLU PRO THR ASN GLY ASN THR GLY ILE ALA LEU ALA TYR SEQRES 7 B 322 VAL ALA ALA ALA ARG GLY TYR LYS LEU THR LEU THR MET SEQRES 8 B 322 PRO GLU THR MET SER ILE GLU ARG ARG LYS LEU LEU LYS SEQRES 9 B 322 ALA LEU GLY ALA ASN LEU VAL LEU THR GLU GLY ALA LYS SEQRES 10 B 322 GLY MET LYS GLY ALA ILE GLN LYS ALA GLU GLU ILE VAL SEQRES 11 B 322 ALA SER ASP PRO GLN LYS TYR LEU LEU LEU GLN GLN PHE SEQRES 12 B 322 SER ASN PRO ALA ASN PRO GLU ILE HIS GLU LYS THR THR SEQRES 13 B 322 GLY PRO GLU ILE TRP GLU ASP THR ASP GLY GLN VAL ASP SEQRES 14 B 322 VAL PHE ILE SER GLY VAL GLY THR GLY GLY THR LEU THR SEQRES 15 B 322 GLY VAL THR ARG TYR ILE LYS GLY THR LYS GLY LYS THR SEQRES 16 B 322 ASP LEU ILE THR VAL ALA VAL GLU PRO THR ASP SER PRO SEQRES 17 B 322 VAL ILE ALA GLN ALA LEU ALA GLY GLU GLU ILE LYS PRO SEQRES 18 B 322 GLY PRO HIS LYS ILE GLN GLY ILE GLY ALA GLY PHE ILE SEQRES 19 B 322 PRO GLY ASN LEU ASP LEU LYS LEU ILE ASP LYS VAL VAL SEQRES 20 B 322 GLY ILE THR ASN GLU GLU ALA ILE SER THR ALA ARG ARG SEQRES 21 B 322 LEU MET GLU GLU GLU GLY ILE LEU ALA GLY ILE SER SER SEQRES 22 B 322 GLY ALA ALA VAL ALA ALA ALA LEU LYS LEU GLN GLU ASP SEQRES 23 B 322 GLU SER PHE THR ASN LYS ASN ILE VAL VAL ILE LEU PRO SEQRES 24 B 322 SER SER GLY GLU ARG TYR LEU SER THR ALA LEU PHE ALA SEQRES 25 B 322 ASP LEU PHE THR GLU LYS GLU LEU GLN GLN HET MET A 401 9 HET PLP A 501 15 HET PLP B 502 15 HET MET B 402 9 HETNAM MET METHIONINE HETNAM PLP PYRIDOXAL-5'-PHOSPHATE HETSYN PLP VITAMIN B6 PHOSPHATE FORMUL 3 MET 2(C5 H11 N O2 S) FORMUL 4 PLP 2(C8 H10 N O6 P) FORMUL 7 HOH *233(H2 O) HELIX 1 1 ASP A 6 ILE A 11 5 6 HELIX 2 2 ALA A 41 ARG A 55 1 15 HELIX 3 3 GLY A 70 GLY A 84 1 15 HELIX 4 4 SER A 96 LEU A 106 1 11 HELIX 5 5 GLU A 114 ALA A 116 5 3 HELIX 6 6 LYS A 117 ASP A 133 1 17 HELIX 7 7 PRO A 146 THR A 155 1 10 HELIX 8 8 THR A 155 THR A 164 1 10 HELIX 9 9 GLY A 178 GLY A 190 1 13 HELIX 10 10 PRO A 208 ALA A 215 1 8 HELIX 11 11 ASP A 239 ILE A 243 5 5 HELIX 12 12 THR A 250 GLY A 266 1 17 HELIX 13 13 GLY A 270 GLN A 284 1 15 HELIX 14 14 GLU A 285 THR A 290 5 6 HELIX 15 15 SER A 301 LEU A 306 5 6 HELIX 16 16 THR A 308 ASP A 313 1 6 HELIX 17 17 THR A 316 GLN A 321 1 6 HELIX 18 18 ASP B 6 ILE B 11 5 6 HELIX 19 19 ALA B 41 ARG B 55 1 15 HELIX 20 20 GLY B 70 GLY B 84 1 15 HELIX 21 21 SER B 96 LEU B 106 1 11 HELIX 22 22 GLU B 114 ALA B 116 5 3 HELIX 23 23 LYS B 117 ASP B 133 1 17 HELIX 24 24 PRO B 146 THR B 155 1 10 HELIX 25 25 THR B 155 THR B 164 1 10 HELIX 26 26 GLY B 178 GLY B 190 1 13 HELIX 27 27 PRO B 208 ALA B 215 1 8 HELIX 28 28 ASP B 239 ILE B 243 5 5 HELIX 29 29 THR B 250 GLY B 266 1 17 HELIX 30 30 GLY B 270 GLN B 284 1 15 HELIX 31 31 GLU B 285 THR B 290 5 6 HELIX 32 32 SER B 301 LEU B 306 5 6 HELIX 33 33 THR B 308 ASP B 313 1 6 HELIX 34 34 THR B 316 GLN B 321 1 6 SHEET 1 A 6 LEU A 16 ARG A 18 0 SHEET 2 A 6 ILE A 27 VAL A 31 -1 N ALA A 29 O VAL A 17 SHEET 3 A 6 ILE A 294 LEU A 298 1 O ILE A 294 N LEU A 28 SHEET 4 A 6 VAL A 170 GLY A 174 1 O VAL A 170 N VAL A 295 SHEET 5 A 6 ILE A 198 PRO A 204 1 O ILE A 198 N PHE A 171 SHEET 6 A 6 LYS A 245 ILE A 249 1 O LYS A 245 N ALA A 201 SHEET 1 B 4 ASN A 109 THR A 113 0 SHEET 2 B 4 LEU A 87 PRO A 92 1 O LEU A 87 N ASN A 109 SHEET 3 B 4 GLU A 63 PRO A 67 1 O LEU A 64 N THR A 88 SHEET 4 B 4 TYR A 137 LEU A 139 1 O LEU A 138 N VAL A 65 SHEET 1 C 6 LEU B 16 ARG B 18 0 SHEET 2 C 6 ILE B 27 VAL B 31 -1 N ALA B 29 O VAL B 17 SHEET 3 C 6 ILE B 294 LEU B 298 1 O ILE B 294 N LEU B 28 SHEET 4 C 6 VAL B 170 GLY B 174 1 O VAL B 170 N VAL B 295 SHEET 5 C 6 ILE B 198 PRO B 204 1 O ILE B 198 N PHE B 171 SHEET 6 C 6 LYS B 245 ILE B 249 1 O LYS B 245 N ALA B 201 SHEET 1 D 4 ASN B 109 THR B 113 0 SHEET 2 D 4 LEU B 87 PRO B 92 1 O LEU B 87 N ASN B 109 SHEET 3 D 4 GLU B 63 PRO B 67 1 O LEU B 64 N THR B 88 SHEET 4 D 4 TYR B 137 LEU B 139 1 N LEU B 138 O GLU B 63 LINK N MET A 401 C4A PLP A 501 1555 1555 1.29 LINK N MET B 402 C4A PLP B 502 1555 1555 1.30 SITE 1 AC1 8 THR A 68 ASN A 69 GLY A 70 ASN A 71 SITE 2 AC1 8 THR A 72 GLN A 142 GLY A 228 PLP A 501 SITE 1 AC2 16 ASN A 69 ASN A 71 GLY A 176 THR A 177 SITE 2 AC2 16 GLY A 178 GLY A 179 THR A 180 GLY A 228 SITE 3 AC2 16 ILE A 229 SER A 272 PRO A 299 SER A 300 SITE 4 AC2 16 TYR A 305 MET A 401 HOH A 508 HOH A 579 SITE 1 AC3 18 ASN B 69 ASN B 71 GLY B 174 GLY B 176 SITE 2 AC3 18 THR B 177 GLY B 178 THR B 180 GLN B 227 SITE 3 AC3 18 GLY B 228 ILE B 229 SER B 272 PRO B 299 SITE 4 AC3 18 SER B 300 TYR B 305 MET B 402 HOH B 509 SITE 5 AC3 18 HOH B 514 HOH B 565 SITE 1 AC4 9 THR B 68 ASN B 69 GLY B 70 ASN B 71 SITE 2 AC4 9 THR B 72 MET B 119 GLN B 142 GLY B 228 SITE 3 AC4 9 PLP B 502 CRYST1 96.940 149.930 53.640 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 0.010316 0.000000 0.000000 0.00000 SCALE2 0.000000 0.006670 0.000000 0.00000 SCALE3 0.000000 0.000000 0.018643 0.00000