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Protein

Homoserine O-acetyltransferase

Gene

metXA

Organism
Pelagibacter ubique (strain HTCC1062)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Transfers an acetyl group from acetyl-CoA to L-homoserine, forming acetyl-L-homoserine.UniRule annotation

Catalytic activityi

Acetyl-CoA + L-homoserine = CoA + O-acetyl-L-homoserine.UniRule annotation

Pathwayi: L-methionine biosynthesis via de novo pathway

This protein is involved in step 1 of the subpathway that synthesizes O-acetyl-L-homoserine from L-homoserine.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Homoserine O-acetyltransferase (metXA)
This subpathway is part of the pathway L-methionine biosynthesis via de novo pathway, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes O-acetyl-L-homoserine from L-homoserine, the pathway L-methionine biosynthesis via de novo pathway and in Amino-acid biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei148NucleophileUniRule annotation1
Binding sitei218SubstrateUniRule annotation1
Active sitei314UniRule annotation1
Active sitei347UniRule annotation1
Binding sitei348SubstrateUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionAcyltransferase, Transferase
Biological processAmino-acid biosynthesis, Methionine biosynthesis

Enzyme and pathway databases

UniPathwayiUPA00051; UER00074.

Protein family/group databases

ESTHERipelub-q4fp51. Homoserine_transacetylase.

Names & Taxonomyi

Protein namesi
Recommended name:
Homoserine O-acetyltransferaseUniRule annotation (EC:2.3.1.31UniRule annotation)
Short name:
HATUniRule annotation
Alternative name(s):
Homoserine transacetylaseUniRule annotation
Short name:
HTAUniRule annotation
Gene namesi
Name:metXAUniRule annotation
Ordered Locus Names:SAR11_0217
OrganismiPelagibacter ubique (strain HTCC1062)
Taxonomic identifieri335992 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaPelagibacteralesPelagibacteraceaeCandidatus Pelagibacter
Proteomesi
  • UP000002528 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002318771 – 372Homoserine O-acetyltransferaseAdd BLAST372

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi335992.SAR11_0217.

Structurei

3D structure databases

ProteinModelPortaliQ4FP51.
SMRiQ4FP51.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini43 – 353AB hydrolase-1UniRule annotationAdd BLAST311

Sequence similaritiesi

Belongs to the AB hydrolase superfamily. MetX family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105DWV. Bacteria.
COG2021. LUCA.
HOGENOMiHOG000246301.
KOiK00641.
OMAiCQGTTGP.
OrthoDBiPOG091H08NY.

Family and domain databases

Gene3Di3.40.50.1820. 1 hit.
HAMAPiMF_00296. MetX_acyltransf. 1 hit.
InterProiView protein in InterPro
IPR029058. AB_hydrolase.
IPR000073. AB_hydrolase_1.
IPR008220. Homoser/ser_AcTrfase.
IPR034387. Homoser_AcTrfase.
PfamiView protein in Pfam
PF00561. Abhydrolase_1. 1 hit.
PIRSFiPIRSF000443. Homoser_Ac_trans. 1 hit.
SUPFAMiSSF53474. SSF53474. 1 hit.
TIGRFAMsiTIGR01392. homoserO_Ac_trn. 1 hit.

Sequencei

Sequence statusi: Complete.

Q4FP51-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNINVNIKNI IIDKPLKLDC GQTINNYSLA YETYGSLNEN KDNAILIFHA
60 70 80 90 100
LTGDQFVSGI NPITKKEGWW SYAVGSGKAI DTDKYFVICA NVIGGCMGSY
110 120 130 140 150
GPSEINPDTN KKYGTTFPVI TINDMVNAQF NLLNFFNIEK LFAVMGGSMG
160 170 180 190 200
GMQTLQFVNN FPDKAKVAIP IACTASHSAQ NIAFNELGRQ SIMADANWEN
210 220 230 240 250
GDYSNQNKNP NKGLSVARMA AHITYLSKNG LQEKFGRKLQ ERDDLKFGFD
260 270 280 290 300
ADFQIESYLR YQGSVFVDRF DANSYLYITR AMDYFDLVKE HHGNLSKAFE
310 320 330 340 350
KTKTKFLIIS FTSDWLYPTS ENKEIVIALN AIGAEVGFVE IESDKGHDSF
360 370
LLKVPKFLNT LGDYIKTAYS KN
Length:372
Mass (Da):41,643
Last modified:August 30, 2005 - v1
Checksum:i67254A60175868EC
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000084 Genomic DNA. Translation: AAZ21038.1.
RefSeqiWP_011281552.1. NC_007205.1.

Genome annotation databases

EnsemblBacteriaiAAZ21038; AAZ21038; SAR11_0217.
KEGGipub:SAR11_0217.

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.

Entry informationi

Entry nameiMETXA_PELUB
AccessioniPrimary (citable) accession number: Q4FP51
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 4, 2006
Last sequence update: August 30, 2005
Last modified: June 7, 2017
This is version 77 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families