UniProt functional annotation for Q9K8V3

UniProt code: Q9K8V3.

Organism: Bacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125).
Taxonomy: Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Alkalihalobacillus.
 
Function: Catalyzes two activities which are involved in the cyclic version of arginine biosynthesis: the synthesis of N-acetylglutamate from glutamate and acetyl-CoA as the acetyl donor, and of ornithine by transacetylation between N(2)-acetylornithine and glutamate. {ECO:0000250}.
 
Catalytic activity: Reaction=L-glutamate + N(2)-acetyl-L-ornithine = L-ornithine + N- acetyl-L-glutamate; Xref=Rhea:RHEA:15349, ChEBI:CHEBI:29985, ChEBI:CHEBI:44337, ChEBI:CHEBI:46911, ChEBI:CHEBI:57805; EC=2.3.1.35;
Catalytic activity: Reaction=acetyl-CoA + L-glutamate = CoA + H(+) + N-acetyl-L-glutamate; Xref=Rhea:RHEA:24292, ChEBI:CHEBI:15378, ChEBI:CHEBI:29985, ChEBI:CHEBI:44337, ChEBI:CHEBI:57287, ChEBI:CHEBI:57288; EC=2.3.1.1;
Activity regulation: Feedback inhibition by L-ornithine. {ECO:0000250}.
Pathway: Amino-acid biosynthesis; L-arginine biosynthesis; L-ornithine and N-acetyl-L-glutamate from L-glutamate and N(2)-acetyl-L-ornithine (cyclic): step 1/1.
Pathway: Amino-acid biosynthesis; L-arginine biosynthesis; N(2)-acetyl- L-ornithine from L-glutamate: step 1/4.
Subunit: Heterotetramer of two alpha and two beta chains. {ECO:0000269|Ref.2}.
Subcellular location: Cytoplasm {ECO:0000305}.
Miscellaneous: Some bacteria possess a monofunctional ArgJ, i.e. capable of catalyzing only the fifth step of the arginine biosynthetic pathway.
Similarity: Belongs to the ArgJ family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.