ID   METXA_LEPBA             Reviewed;         378 AA.
AC   B0SHJ0;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 82.
DE   RecName: Full=Homoserine O-acetyltransferase {ECO:0000255|HAMAP-Rule:MF_00296};
DE            Short=HAT {ECO:0000255|HAMAP-Rule:MF_00296};
DE            EC=2.3.1.31 {ECO:0000255|HAMAP-Rule:MF_00296};
DE   AltName: Full=Homoserine transacetylase {ECO:0000255|HAMAP-Rule:MF_00296};
DE            Short=HTA {ECO:0000255|HAMAP-Rule:MF_00296};
GN   Name=metXA {ECO:0000255|HAMAP-Rule:MF_00296}; OrderedLocusNames=LBF_1541;
OS   Leptospira biflexa serovar Patoc (strain Patoc 1 / Ames).
OC   Bacteria; Spirochaetes; Leptospirales; Leptospiraceae; Leptospira.
OX   NCBI_TaxID=355278;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Patoc 1 / Ames;
RX   PubMed=18270594; DOI=10.1371/journal.pone.0001607;
RA   Picardeau M., Bulach D.M., Bouchier C., Zuerner R.L., Zidane N.,
RA   Wilson P.J., Creno S., Kuczek E.S., Bommezzadri S., Davis J.C., McGrath A.,
RA   Johnson M.J., Boursaux-Eude C., Seemann T., Rouy Z., Coppel R.L.,
RA   Rood J.I., Lajus A., Davies J.K., Medigue C., Adler B.;
RT   "Genome sequence of the saprophyte Leptospira biflexa provides insights
RT   into the evolution of Leptospira and the pathogenesis of leptospirosis.";
RL   PLoS ONE 3:E1607-E1607(2008).
CC   -!- FUNCTION: Transfers an acetyl group from acetyl-CoA to L-homoserine,
CC       forming acetyl-L-homoserine. {ECO:0000255|HAMAP-Rule:MF_00296}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=acetyl-CoA + L-homoserine = CoA + O-acetyl-L-homoserine;
CC         Xref=Rhea:RHEA:13701, ChEBI:CHEBI:57287, ChEBI:CHEBI:57288,
CC         ChEBI:CHEBI:57476, ChEBI:CHEBI:57716; EC=2.3.1.31;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00296};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via de novo
CC       pathway; O-acetyl-L-homoserine from L-homoserine: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_00296}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00296}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00296}.
CC   -!- SIMILARITY: Belongs to the AB hydrolase superfamily. MetX family.
CC       {ECO:0000255|HAMAP-Rule:MF_00296}.
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DR   EMBL; CP000777; ABZ94051.1; -; Genomic_DNA.
DR   RefSeq; WP_012388577.1; NC_010842.1.
DR   AlphaFoldDB; B0SHJ0; -.
DR   SMR; B0SHJ0; -.
DR   ESTHER; lepba-metx; Homoserine_transacetylase.
DR   KEGG; lbf:LBF_1541; -.
DR   HOGENOM; CLU_028760_1_2_12; -.
DR   OMA; TRFCVVS; -.
DR   BioCyc; LBIF355278:LBF_RS07860-MON; -.
DR   UniPathway; UPA00051; UER00074.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004414; F:homoserine O-acetyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009086; P:methionine biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.1820; -; 1.
DR   HAMAP; MF_00296; MetX_acyltransf; 1.
DR   InterPro; IPR029058; AB_hydrolase.
DR   InterPro; IPR000073; AB_hydrolase_1.
DR   InterPro; IPR008220; HAT_MetX-like.
DR   PANTHER; PTHR32268; PTHR32268; 1.
DR   Pfam; PF00561; Abhydrolase_1; 1.
DR   PIRSF; PIRSF000443; Homoser_Ac_trans; 1.
DR   SUPFAM; SSF53474; SSF53474; 1.
DR   TIGRFAMs; TIGR01392; homoserO_Ac_trn; 1.
PE   3: Inferred from homology;
KW   Acyltransferase; Amino-acid biosynthesis; Cytoplasm;
KW   Methionine biosynthesis; Transferase.
FT   CHAIN           1..378
FT                   /note="Homoserine O-acetyltransferase"
FT                   /id="PRO_1000115227"
FT   DOMAIN          54..355
FT                   /note="AB hydrolase-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   ACT_SITE        159
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   ACT_SITE        318
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   ACT_SITE        351
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   BINDING         228
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   BINDING         352
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
SQ   SEQUENCE   378 AA;  41701 MW;  44C2A1F36AE02A85 CRC64;
     MPTSEPNDFF HGSVGIVQTQ VATFDSLTLE GGETITPLEI AYETYGTLNQ KKDNAILVCH
     ALSGDAHAAG FHEGDKRPGW WDYYIGPGKA FDTNRYFIIS SNVIGGCKGS SGPLSTNGNT
     GKPFQSTFPF VSIGDMVNAQ EKLIRHFGIH KLFAVAGGSM GGMQALQWSV AYPDRLKNCI
     VMASSSEHSA QQIAFNEVGR QAILSDPNWN QGLYTQEKRP SKGLALARMM GHITYLSDEM
     MREKFGRKPP KGNIQSTDFA VGSYLIYQGE SFVDRFDANS YIYVTKALDH FSLGTGKELT
     KVLSKVRCRF LVIAYTSDWL YPPYQSEEIV KSLEVNAVPV SFIELNNPAG HDSFLLPSEE
     QDSILRDFLS ATDEGGFF