HEADER TRANSFERASE/TRANSFERASE INHIBITOR 15-MAY-15 4ZU6 TITLE CRYSTAL STRUCTURE OF O-ACETYLSERINE SULFHYDRYLASE FROM HAEMOPHILUS TITLE 2 INFLUENZAE IN COMPLEX WITH PRE-REACTIVE O-ACETYL SERINE, ALPHA- TITLE 3 AMINOACRYLATE REACTION INTERMEDIATE AND PEPTIDE INHIBITOR AT THE TITLE 4 RESOLUTION OF 2.25A COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYSTEINE SYNTHASE; COMPND 3 CHAIN: X; COMPND 4 SYNONYM: CSASE,O-ACETYLSERINE (THIOL)-LYASE,OAS-TL,O-ACETYLSERINE COMPND 5 SULFHYDRYLASE; COMPND 6 EC: 2.5.1.47; COMPND 7 ENGINEERED: YES; COMPND 8 MOL_ID: 2; COMPND 9 MOLECULE: C-TERMINAL PEPTIDE FROM SERINE ACETYLTRANSFERASE; COMPND 10 CHAIN: B; COMPND 11 SYNONYM: SAT,SERINE TRANSACETYLASE; COMPND 12 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HAEMOPHILUS INFLUENZAE KW20; SOURCE 3 ORGANISM_TAXID: 71421; SOURCE 4 STRAIN: KW20; SOURCE 5 ATCC: 51907; SOURCE 6 GENE: CYSK, HI_1103; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 9 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 10 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 11 MOL_ID: 2; SOURCE 12 SYNTHETIC: YES; SOURCE 13 ORGANISM_SCIENTIFIC: SALMONELLA TYPHIMURIUM LT2; SOURCE 14 ORGANISM_TAXID: 99287 KEYWDS AMINO ACID BIOSYNTHESIS, CYSTEINE BIOSYNTHESIS, PYRIDOXIAL PHOSPHATE, KEYWDS 2 TRANSFERASE, TRANSFERASE-TRANSFERASE INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR M.K.EKKA,A.K.SINGH,A.KAUSHIK,S.KUMARAN REVDAT 2 08-NOV-23 4ZU6 1 SOURCE REMARK REVDAT 1 10-JUN-15 4ZU6 0 SPRSDE 10-JUN-15 4ZU6 4MH9 JRNL AUTH M.K.EKKA,A.K.SINGH,A.KAUSHIK,S.KUMARAN JRNL TITL CRYSTAL STRUCTURE OF O-ACETYLSERINE SULFHYDRYLASE FROM JRNL TITL 2 HAEMOPHILUS INUEN-ZAE IN COMPLEX WITH PRE-REACTIVE O-ACETYL JRNL TITL 3 SERINE AND PEPTIDE INHIBITOR JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 2.03 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.9_1692 REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.03 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.360 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.5 REMARK 3 NUMBER OF REFLECTIONS : 17782 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.191 REMARK 3 R VALUE (WORKING SET) : 0.189 REMARK 3 FREE R VALUE : 0.230 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.120 REMARK 3 FREE R VALUE TEST SET COUNT : 910 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 35.6235 - 3.6885 1.00 2908 143 0.1790 0.1994 REMARK 3 2 3.6885 - 2.9281 1.00 2822 142 0.1925 0.2127 REMARK 3 3 2.9281 - 2.5581 1.00 2806 157 0.1921 0.2496 REMARK 3 4 2.5581 - 2.3242 1.00 2804 161 0.1868 0.2756 REMARK 3 5 2.3242 - 2.1577 0.99 2766 159 0.2076 0.2830 REMARK 3 6 2.1577 - 2.0305 0.98 2766 148 0.2049 0.2756 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.220 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 23.430 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 31.04 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.008 2328 REMARK 3 ANGLE : 1.159 3164 REMARK 3 CHIRALITY : 0.045 377 REMARK 3 PLANARITY : 0.005 409 REMARK 3 DIHEDRAL : 14.486 828 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 4ZU6 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 22-MAY-15. REMARK 100 THE DEPOSITION ID IS D_1000209905. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 13-JUL-11 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.4-7.6 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 : GRAPHITE POLAR REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MAR SCANNER 345 MM PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17815 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.030 REMARK 200 RESOLUTION RANGE LOW (A) : 35.500 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.0 REMARK 200 DATA REDUNDANCY : 6.600 REMARK 200 R MERGE (I) : 0.05000 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 51.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.03 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.20 REMARK 200 COMPLETENESS FOR SHELL (%) : 92.0 REMARK 200 DATA REDUNDANCY IN SHELL : 5.40 REMARK 200 R MERGE FOR SHELL (I) : 0.19000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 8.640 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: 4HO1 REMARK 200 REMARK 200 REMARK: TRIANGLE SHAPED REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 36.25 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.93 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M HEPES, 1.4M SODIUM CITRATE, VAPOR REMARK 280 DIFFUSION, SITTING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 41 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 3555 -Y,X+1/2,Z+1/4 REMARK 290 4555 Y+1/2,-X,Z+3/4 REMARK 290 5555 X+1/2,Y+1/2,Z+1/2 REMARK 290 6555 -X,-Y,Z REMARK 290 7555 -Y+1/2,X,Z+3/4 REMARK 290 8555 Y,-X+1/2,Z+1/4 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 56.31700 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 56.31700 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 21.74500 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 56.31700 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 10.87250 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 56.31700 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 32.61750 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 56.31700 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 56.31700 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 21.74500 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 -1.000000 0.000000 56.31700 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 1.000000 32.61750 REMARK 290 SMTRY1 8 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 56.31700 REMARK 290 SMTRY3 8 0.000000 0.000000 1.000000 10.87250 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: 1460 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 12220 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -9.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: X, 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 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 HIS X -15 REMARK 465 HIS X -14 REMARK 465 HIS X -13 REMARK 465 HIS X -12 REMARK 465 HIS X -11 REMARK 465 HIS X -10 REMARK 465 SER X -9 REMARK 465 SER X -8 REMARK 465 GLY X -7 REMARK 465 LEU X -6 REMARK 465 VAL X -5 REMARK 465 PRO X -4 REMARK 465 ARG X -3 REMARK 465 GLY X -2 REMARK 465 SER X -1 REMARK 465 HIS X 0 REMARK 465 MET X 120 REMARK 465 LYS X 121 REMARK 465 GLU X 312 REMARK 465 GLY X 313 REMARK 465 ILE X 314 REMARK 465 GLU X 315 REMARK 465 GLY X 316 REMARK 465 HIS B 264 REMARK 465 HIS B 265 REMARK 465 THR B 266 REMARK 465 ASP B 271 REMARK 465 GLY B 272 REMARK 465 ILE B 273 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 LYS X 61 CG CD CE NZ REMARK 470 LYS X 63 CG CD CE NZ REMARK 470 LYS X 87 CG CD CE NZ REMARK 470 MET X 92 CG SD CE REMARK 470 LEU X 98 CG CD1 CD2 REMARK 470 ARG X 102 CG CD NE CZ NH1 NH2 REMARK 470 ASN X 110 CG OD1 ND2 REMARK 470 ILE X 124 CG1 CG2 CD1 REMARK 470 ALA X 125 CB REMARK 470 LYS X 126 CG CD CE NZ REMARK 470 GLU X 129 CD OE1 OE2 REMARK 470 TYR X 138 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 LYS X 163 CG CD CE NZ REMARK 470 GLU X 218 CG CD OE1 OE2 REMARK 470 LYS X 220 CG CD CE NZ REMARK 470 GLN X 227 CG CD OE1 NE2 REMARK 470 LEU X 306 CG CD1 CD2 REMARK 470 TYR B 269 CG CD1 CD2 CE1 CE2 CZ OH 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 ALA X 125 -80.18 -57.13 REMARK 500 ALA X 127 -60.04 142.92 REMARK 500 ASP X 134 77.23 -160.51 REMARK 500 GLU B 268 -126.77 -134.67 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 OAS X 401 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue PLP X 402 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 4ZU1 RELATED DB: PDB REMARK 900 RELATED ID: 4ZU8 RELATED DB: PDB DBREF 4ZU6 X 1 316 UNP P45040 CYSK_HAEIN 1 316 DBREF 4ZU6 B 264 273 UNP P29847 CYSE_SALTY 264 273 SEQADV 4ZU6 HIS X -15 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 HIS X -14 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 HIS X -13 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 HIS X -12 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 HIS X -11 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 HIS X -10 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 SER X -9 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 SER X -8 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 GLY X -7 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 LEU X -6 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 VAL X -5 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 PRO X -4 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 ARG X -3 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 GLY X -2 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 SER X -1 UNP P45040 EXPRESSION TAG SEQADV 4ZU6 HIS X 0 UNP P45040 EXPRESSION TAG SEQRES 1 X 332 HIS HIS HIS HIS HIS HIS SER SER GLY LEU VAL PRO ARG SEQRES 2 X 332 GLY SER HIS MET ALA ILE TYR ALA ASP ASN SER TYR SER SEQRES 3 X 332 ILE GLY ASN THR PRO LEU VAL ARG LEU LYS HIS PHE GLY SEQRES 4 X 332 HIS ASN GLY ASN VAL VAL VAL LYS ILE GLU GLY ARG ASN SEQRES 5 X 332 PRO SER TYR SER VAL LYS CYS ARG ILE GLY ALA ASN MET SEQRES 6 X 332 VAL TRP GLN ALA GLU LYS ASP GLY THR LEU THR LYS GLY SEQRES 7 X 332 LYS GLU ILE VAL ASP ALA THR SER GLY ASN THR GLY ILE SEQRES 8 X 332 ALA LEU ALA TYR VAL ALA ALA ALA ARG GLY TYR LYS ILE SEQRES 9 X 332 THR LEU THR MET PRO GLU THR MET SER LEU GLU ARG LYS SEQRES 10 X 332 ARG LEU LEU CYS GLY LEU GLY VAL ASN LEU VAL LEU THR SEQRES 11 X 332 GLU GLY ALA LYS GLY MET LYS GLY ALA ILE ALA LYS ALA SEQRES 12 X 332 GLU GLU ILE VAL ALA SER ASP PRO SER ARG TYR VAL MET SEQRES 13 X 332 LEU LYS GLN PHE GLU ASN PRO ALA ASN PRO GLN ILE HIS SEQRES 14 X 332 ARG GLU THR THR GLY PRO GLU ILE TRP LYS ASP THR ASP SEQRES 15 X 332 GLY LYS VAL ASP VAL VAL VAL ALA GLY VAL GLY THR GLY SEQRES 16 X 332 GLY SER ILE THR GLY ILE SER ARG ALA ILE LYS LEU ASP SEQRES 17 X 332 PHE GLY LYS GLN ILE THR SER VAL ALA VAL GLU PRO VAL SEQRES 18 X 332 GLU SER PRO VAL ILE SER GLN THR LEU ALA GLY GLU GLU SEQRES 19 X 332 VAL LYS PRO GLY PRO HIS LYS ILE GLN GLY ILE GLY ALA SEQRES 20 X 332 GLY PHE ILE PRO LYS ASN LEU ASP LEU SER ILE ILE ASP SEQRES 21 X 332 ARG VAL GLU THR VAL ASP SER ASP THR ALA LEU ALA THR SEQRES 22 X 332 ALA ARG ARG LEU MET ALA GLU GLU GLY ILE LEU ALA GLY SEQRES 23 X 332 ILE SER SER GLY ALA ALA VAL ALA ALA ALA ASP ARG LEU SEQRES 24 X 332 ALA LYS LEU PRO GLU PHE ALA ASP LYS LEU ILE VAL VAL SEQRES 25 X 332 ILE LEU PRO SER ALA SER GLU ARG TYR LEU SER THR ALA SEQRES 26 X 332 LEU PHE GLU GLY ILE GLU GLY SEQRES 1 B 10 HIS HIS THR PHE GLU TYR GLY ASP GLY ILE HET OAS X 401 10 HET PLP X 402 16 HETNAM OAS O-ACETYLSERINE HETNAM PLP PYRIDOXAL-5'-PHOSPHATE HETSYN PLP VITAMIN B6 PHOSPHATE FORMUL 3 OAS C5 H9 N O4 FORMUL 4 PLP C8 H10 N O6 P FORMUL 5 HOH *68(H2 O) HELIX 1 AA1 ASP X 6 ILE X 11 5 6 HELIX 2 AA2 ASN X 36 VAL X 41 5 6 HELIX 3 AA3 LYS X 42 ASP X 56 1 15 HELIX 4 AA4 GLY X 71 GLY X 85 1 15 HELIX 5 AA5 SER X 97 LEU X 107 1 11 HELIX 6 AA6 GLU X 115 GLY X 119 5 5 HELIX 7 AA7 ILE X 124 ALA X 132 1 9 HELIX 8 AA8 PRO X 147 THR X 156 1 10 HELIX 9 AA9 THR X 156 THR X 165 1 10 HELIX 10 AB1 GLY X 179 ASP X 192 1 14 HELIX 11 AB2 PRO X 208 ALA X 215 1 8 HELIX 12 AB3 ASP X 239 ILE X 243 5 5 HELIX 13 AB4 ASP X 250 GLY X 266 1 17 HELIX 14 AB5 GLY X 270 LYS X 285 1 16 HELIX 15 AB6 LEU X 286 ALA X 290 5 5 HELIX 16 AB7 ALA X 301 LEU X 306 5 6 SHEET 1 AA1 6 LEU X 16 ARG X 18 0 SHEET 2 AA1 6 VAL X 28 ILE X 32 -1 O VAL X 30 N VAL X 17 SHEET 3 AA1 6 LEU X 293 LEU X 298 1 O VAL X 296 N LYS X 31 SHEET 4 AA1 6 VAL X 169 GLY X 175 1 N VAL X 171 O VAL X 295 SHEET 5 AA1 6 THR X 198 PRO X 204 1 O VAL X 200 N VAL X 172 SHEET 6 AA1 6 ARG X 245 VAL X 249 1 O GLU X 247 N ALA X 201 SHEET 1 AA2 4 ASN X 110 THR X 114 0 SHEET 2 AA2 4 ILE X 88 PRO X 93 1 N MET X 92 O THR X 114 SHEET 3 AA2 4 GLU X 64 ALA X 68 1 N ILE X 65 O THR X 89 SHEET 4 AA2 4 TYR X 138 MET X 140 1 O VAL X 139 N GLU X 64 SITE 1 AC1 10 THR X 69 SER X 70 ASN X 72 THR X 73 SITE 2 AC1 10 GLN X 143 PHE X 144 GLY X 177 GLY X 228 SITE 3 AC1 10 PLP X 402 HOH X 537 SITE 1 AC2 21 LYS X 42 ASN X 72 GLY X 175 VAL X 176 SITE 2 AC2 21 GLY X 177 THR X 178 GLY X 179 GLY X 180 SITE 3 AC2 21 SER X 181 GLN X 227 GLY X 228 ILE X 229 SITE 4 AC2 21 SER X 272 PRO X 299 SER X 300 TYR X 305 SITE 5 AC2 21 OAS X 401 HOH X 513 HOH X 531 HOH X 535 SITE 6 AC2 21 HOH X 556 CRYST1 112.634 112.634 43.490 90.00 90.00 90.00 I 41 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 0.008878 0.000000 0.000000 0.00000 SCALE2 0.000000 0.008878 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022994 0.00000