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Publication Abstract from PubMed

Staphylococcus aureus is a Gram-positive bacterium with strong pathogenicity that causes a wide range of infections and diseases. Enolase is an evolutionarily conserved enzyme that plays a key role in energy production through glycolysis. Additionally, enolase is located on the surface of S. aureus and is involved in processes leading to infection. Here, crystal structures of Sa_enolase with and without bound phosphoenolpyruvate (PEP) are presented at 1.6 and 2.45 A resolution, respectively. The structure reveals an octameric arrangement; however, both dimeric and octameric conformations were observed in solution. Furthermore, enzyme-activity assays show that only the octameric variant is catalytically active. Biochemical and structural studies indicate that the octameric form of Sa_enolase is enzymatically active in vitro and likely also in vivo, while the dimeric form is catalytically inactive and may be involved in other biological processes.

Octameric structure of Staphylococcus aureus enolase in complex with phosphoenolpyruvate.,Wu Y, Wang C, Lin S, Wu M, Han L, Tian C, Zhang X, Zang J Acta Crystallogr D Biol Crystallogr. 2015 Dec 1;71(Pt 12):2457-70. doi:, 10.1107/S1399004715018830. Epub 2015 Nov 26. PMID:26627653^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.