Structure of homoserine O-acetyltransferase from Staphylococcus aureus: the first Gram-positive ortholog structure.Thangavelu, B., Pavlovsky, A.G., Viola, R.
(2014) Acta Crystallogr Sect F Struct Biol Cryst Commun 70: 1340-1345
- PubMed: 25286936
- DOI: https://doi.org/10.1107/S2053230X14018664
- Primary Citation of Related Structures:
- PubMed Abstract:
Homoserine O-acetyltransferase (HTA) catalyzes the formation of L-O-acetyl-homoserine from L-homoserine through the transfer of an acetyl group from acetyl-CoA. This is the first committed step required for the biosynthesis of methionine in many fungi, Gram-positive bacteria and some Gram-negative bacteria. The structure of HTA from Staphylococcus aureus (SaHTA) has been determined to a resolution of 2.45 Å. The structure belongs to the α/β-hydrolase superfamily, consisting of two distinct domains: a core α/β-domain containing the catalytic site and a lid domain assembled into a helical bundle. The active site consists of a classical catalytic triad located at the end of a deep tunnel. Structure analysis revealed some important differences for SaHTA compared with the few known structures of HTA.
Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH 43606, USA.