ID   METXA_LEPBL             Reviewed;         368 AA.
AC   Q052B3;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   14-NOV-2006, sequence version 1.
DT   03-AUG-2022, entry version 90.
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=LBL_1340;
OS   Leptospira borgpetersenii serovar Hardjo-bovis (strain L550).
OC   Bacteria; Spirochaetes; Leptospirales; Leptospiraceae; Leptospira.
OX   NCBI_TaxID=355276;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=L550;
RX   PubMed=16973745; DOI=10.1073/pnas.0603979103;
RA   Bulach D.M., Zuerner R.L., Wilson P., Seemann T., McGrath A., Cullen P.A.,
RA   Davis J., Johnson M., Kuczek E., Alt D.P., Peterson-Burch B., Coppel R.L.,
RA   Rood J.I., Davies J.K., Adler B.;
RT   "Genome reduction in Leptospira borgpetersenii reflects limited
RT   transmission potential.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:14560-14565(2006).
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP000348; ABJ78832.1; -; Genomic_DNA.
DR   RefSeq; WP_011670050.1; NC_008508.1.
DR   AlphaFoldDB; Q052B3; -.
DR   SMR; Q052B3; -.
DR   ESTHER; lepin-METX; Homoserine_transacetylase.
DR   KEGG; lbl:LBL_1340; -.
DR   HOGENOM; CLU_028760_1_2_12; -.
DR   OMA; TRFCVVS; -.
DR   OrthoDB; 536745at2; -.
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..368
FT                   /note="Homoserine O-acetyltransferase"
FT                   /id="PRO_1000021881"
FT   DOMAIN          47..349
FT                   /note="AB hydrolase-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   ACT_SITE        153
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   ACT_SITE        311
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   ACT_SITE        344
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   BINDING         221
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT   BINDING         345
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
SQ   SEQUENCE   368 AA;  40426 MW;  E6FB1F6E228AD460 CRC64;
     MNESGSIGII ETKYAEFKEL PLKNGSVLSP VVIAYETYGT LSPSKNNAIL ICHALSGDAH
     AAGYHSESDK KPGWWDDYIG PGKSFDTNQY FIICSNVIGG CKGSSGPLSI HPKTGTPYGS
     RFPFVSIQDM VKAQKLLVEF LGIDKLFCVA GGSMGGMQAL EWSIAYPDSL LNCIVMASTA
     EHSAMQIAFN EVGRQAILSD PNWNNGLYNE NSPRKGLALA RMVGHITYLS DDKMREKFGR
     NPPRGNILTT DFAVGSYLIY QGESFVDRFD ANSYIYVTKA LDHYSLGKGK ELTAALSTAT
     CRFLIVSYSS DWLYPPAQSR EIVKSLEAAD KRVFYLELQS GEGHDSFLLK NPKQIEILKG
     FLENQSSP