METXA_DEFDS
ID METXA_DEFDS Reviewed; 377 AA.
AC D3P9D1;
DT 07-JUN-2017, integrated into UniProtKB/Swiss-Prot.
DT 20-APR-2010, sequence version 1.
DT 03-AUG-2022, entry version 74.
DE RecName: Full=Homoserine O-acetyltransferase {ECO:0000255|HAMAP-Rule:MF_00296};
DE Short=HAT {ECO:0000255|HAMAP-Rule:MF_00296, ECO:0000303|PubMed:28581482};
DE EC=2.3.1.31 {ECO:0000255|HAMAP-Rule:MF_00296, ECO:0000269|PubMed:28581482};
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, ECO:0000303|PubMed:28581482};
GN OrderedLocusNames=DEFDS_1867 {ECO:0000312|EMBL:BAI81321.1};
OS Deferribacter desulfuricans (strain DSM 14783 / JCM 11476 / NBRC 101012 /
OS SSM1).
OC Bacteria; Deferribacteres; Deferribacterales; Deferribacteraceae;
OC Deferribacter.
OX NCBI_TaxID=639282;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 14783 / JCM 11476 / NBRC 101012 / SSM1;
RX PubMed=20189949; DOI=10.1093/dnares/dsq005;
RA Takaki Y., Shimamura S., Nakagawa S., Fukuhara Y., Horikawa H., Ankai A.,
RA Harada T., Hosoyama A., Oguchi A., Fukui S., Fujita N., Takami H.,
RA Takai K.;
RT "Bacterial lifestyle in a deep-sea hydrothermal vent chimney revealed by
RT the genome sequence of the thermophilic bacterium Deferribacter
RT desulfuricans SSM1.";
RL DNA Res. 17:123-137(2010).
RN [2]
RP FUNCTION, AND CATALYTIC ACTIVITY.
RX PubMed=28581482; DOI=10.1038/nchembio.2397;
RA Bastard K., Perret A., Mariage A., Bessonnet T., Pinet-Turpault A.,
RA Petit J.L., Darii E., Bazire P., Vergne-Vaxelaire C., Brewee C., Debard A.,
RA Pellouin V., Besnard-Gonnet M., Artiguenave F., Medigue C., Vallenet D.,
RA Danchin A., Zaparucha A., Weissenbach J., Salanoubat M., de Berardinis V.;
RT "Parallel evolution of non-homologous isofunctional enzymes in methionine
RT biosynthesis.";
RL Nat. Chem. Biol. 13:858-866(2017).
CC -!- FUNCTION: Transfers an acetyl group from acetyl-CoA to L-homoserine,
CC forming acetyl-L-homoserine. {ECO:0000255|HAMAP-Rule:MF_00296,
CC ECO:0000269|PubMed:28581482}.
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 ECO:0000269|PubMed:28581482};
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; AP011529; BAI81321.1; -; Genomic_DNA.
DR RefSeq; WP_013008566.1; NC_013939.1.
DR AlphaFoldDB; D3P9D1; -.
DR SMR; D3P9D1; -.
DR STRING; 639282.DEFDS_1867; -.
DR EnsemblBacteria; BAI81321; BAI81321; DEFDS_1867.
DR KEGG; ddf:DEFDS_1867; -.
DR eggNOG; COG2021; Bacteria.
DR HOGENOM; CLU_028760_1_2_0; -.
DR OMA; TRFCVVS; -.
DR OrthoDB; 536745at2; -.
DR UniPathway; UPA00051; UER00074.
DR Proteomes; UP000001520; Chromosome.
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 1: Evidence at protein level;
KW Acyltransferase; Amino-acid biosynthesis; Cytoplasm;
KW Methionine biosynthesis; Reference proteome; Transferase.
FT CHAIN 1..377
FT /note="Homoserine O-acetyltransferase"
FT /id="PRO_0000440278"
FT DOMAIN 47..355
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 316
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT ACT_SITE 349
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT BINDING 222
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
FT BINDING 350
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00296"
SQ SEQUENCE 377 AA; 42708 MW; 31AD2FB64401CBC0 CRC64;
MKENSVGLVK TKYVTFKDDF YFESGRILSP ITVAYETYGK LNEKKDNAIL ICHALTGSAH
AAGYNSPDDQ KPGWWDDMIG PGKAFDTDKY FIICSNFLGS CYGTTGPASI DPSTGKPYGL
KFPVFTVKDM VKLQKKLIDY LGIEKLLCVA GGSMGGMQAL EWAVTFPEKT YSIIPIATAG
RITPMAIAFN TIGRFAIMKD PNWMNGDYYG KTFPRDGLAI ARMAGHITYM SDKSFHKKFG
RRYATFGGIY DFFGYFEVEN YLRYNGYKFT ERFDANSYLY IIKAMDIFDL SYGYGSYEEA
IGRIEADSLF ITFTSDFLFP SYQTEEIVNI MKNHGKNPEW VNIESDYGHD AFLLEFDTQT
SCIKEFLSKI YNKVANQ
