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Octameric structure of Staphylococcus aureus enolase in complex with phosphoenolpyruvate.


ABSTRACT: 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?Å 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.

SUBMITTER: Wu Y 

PROVIDER: S-EPMC4667285 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature

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Octameric structure of Staphylococcus aureus enolase in complex with phosphoenolpyruvate.

Wu Yunfei Y   Wang Chengliang C   Lin Shenglong S   Wu Minhao M   Han Lu L   Tian Changlin C   Zhang Xuan X   Zang Jianye J  

Acta crystallographica. Section D, Biological crystallography 20151126 Pt 12


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 Å resolution, respectively. The  ...[more]

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