ID   METAA_RHIWR             Reviewed;         317 AA.
AC   A5V3T8;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   10-JUL-2007, sequence version 1.
DT   03-AUG-2022, entry version 81.
DE   RecName: Full=Homoserine O-acetyltransferase {ECO:0000255|HAMAP-Rule:MF_00295};
DE            Short=HAT {ECO:0000255|HAMAP-Rule:MF_00295};
DE            EC=2.3.1.31 {ECO:0000255|HAMAP-Rule:MF_00295};
DE   AltName: Full=Homoserine transacetylase {ECO:0000255|HAMAP-Rule:MF_00295};
DE            Short=HTA {ECO:0000255|HAMAP-Rule:MF_00295};
GN   Name=metAA {ECO:0000255|HAMAP-Rule:MF_00295}; OrderedLocusNames=Swit_0586;
OS   Rhizorhabdus wittichii (strain DSM 6014 / CCUG 31198 / JCM 15750 / NBRC
OS   105917 / EY 4224 / RW1) (Sphingomonas wittichii).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Sphingomonadales;
OC   Sphingomonadaceae; Rhizorhabdus.
OX   NCBI_TaxID=392499;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 6014 / CCUG 31198 / JCM 15750 / NBRC 105917 / EY 4224 / RW1;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Saunders E., Brettin T., Bruce D., Detter J.C.,
RA   Han C., Tapia R., Gilna P., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Kim E., Halden R.U., Miller T.R., Salzberg S.L., Eisen J.A.,
RA   Richardson P.;
RT   "Complete sequence of chromosome of Sphingomonas wittichii RW1.";
RL   Submitted (MAY-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Transfers an acetyl group from acetyl-CoA to L-homoserine,
CC       forming acetyl-L-homoserine. {ECO:0000255|HAMAP-Rule:MF_00295}.
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_00295};
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_00295}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00295}.
CC   -!- SIMILARITY: Belongs to the MetA family. {ECO:0000255|HAMAP-
CC       Rule:MF_00295}.
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DR   EMBL; CP000699; ABQ66954.1; -; Genomic_DNA.
DR   RefSeq; WP_011951434.1; NC_009511.1.
DR   AlphaFoldDB; A5V3T8; -.
DR   SMR; A5V3T8; -.
DR   STRING; 392499.Swit_0586; -.
DR   EnsemblBacteria; ABQ66954; ABQ66954; Swit_0586.
DR   KEGG; swi:Swit_0586; -.
DR   eggNOG; COG1897; Bacteria.
DR   HOGENOM; CLU_057851_0_1_5; -.
DR   OMA; WLWFCYQ; -.
DR   OrthoDB; 1601420at2; -.
DR   UniPathway; UPA00051; UER00074.
DR   Proteomes; UP000001989; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004414; F:homoserine O-acetyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0008899; F:homoserine O-succinyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019281; P:L-methionine biosynthetic process from homoserine via O-succinyl-L-homoserine and cystathionine; IEA:InterPro.
DR   CDD; cd03131; GATase1_HTS; 1.
DR   Gene3D; 3.40.50.880; -; 1.
DR   HAMAP; MF_00295; MetA_acyltransf; 1.
DR   InterPro; IPR029062; Class_I_gatase-like.
DR   InterPro; IPR005697; HST_MetA.
DR   InterPro; IPR033752; MetA_family.
DR   PANTHER; PTHR20919; PTHR20919; 1.
DR   Pfam; PF04204; HTS; 1.
DR   PIRSF; PIRSF000450; H_ser_succinyltr; 1.
DR   SUPFAM; SSF52317; SSF52317; 1.
DR   TIGRFAMs; TIGR01001; metA; 1.
PE   3: Inferred from homology;
KW   Acyltransferase; Amino-acid biosynthesis; Cytoplasm;
KW   Methionine biosynthesis; Reference proteome; Transferase.
FT   CHAIN           1..317
FT                   /note="Homoserine O-acetyltransferase"
FT                   /id="PRO_1000021850"
FT   ACT_SITE        142
FT                   /note="Acyl-thioester intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
FT   ACT_SITE        235
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
FT   ACT_SITE        237
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
FT   BINDING         163
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
FT   BINDING         192
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
FT   BINDING         249
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
FT   SITE            111
FT                   /note="Important for acyl-CoA specificity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
FT   SITE            192
FT                   /note="Important for substrate specificity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00295"
SQ   SEQUENCE   317 AA;  35452 MW;  0E2DB8404783A454 CRC64;
     MPIKIPDDLP ARPILEQEGV VVMRRTDAVR QDIRPLRIGL LNLMPNKIST ETQLARLLGA
     TPLQVELTLV RMTDHVARHT PADHMAAFYR PWAEVRDERF DGFVITGAPV EHLPFEEVGY
     WPELCRVLDW TQTHVHSSFT ICWAAQAALH HFHGVPKHLL PAKAFGLFRH RNLAPASPYL
     RGFSDDPHIP VSRWAEIRQA DIPAGSGLET LLDSAETGPC LLDDPAHRSL HMFNHVEYDT
     RSLADEYFRD GQGPLPAGYF PGDDPARPPE NRWRGHAHLL FGNWINEIYR TTPFDIAAIG
     GGRPPANDAG PIEAAAG