Structural highlights
Function[NANA_STAA3] Catalyzes the reversible aldol cleavage of N-acetylneuraminic acid (sialic acid; Neu5Ac) to form pyruvate and N-acetylmannosamine (ManNAc) via a Schiff base intermediate. Publication Abstract from PubMedN-Acetylneuraminate lyase is the first committed enzyme in the degradation of sialic acid by bacterial pathogens. In this study, we analyzed the kinetic parameters of N-acetylneuraminate lyase from methicillin-resistant Staphylococcus aureus (MRSA). We determined that the enzyme has a relatively high KM of 3.2 mm, suggesting that flux through the catabolic pathway is likely to be controlled by this enzyme. Our data indicate that sialic acid alditol, a known inhibitor of N-acetylneuraminate lyase enzymes, is a stronger inhibitor of MRSA N-acetylneuraminate lyase than of Clostridium perfringens N-acetylneuraminate lyase. Our analysis of the crystal structure of ligand-free and 2R-sialic acid alditol-bound MRSA N-acetylneuraminate lyase suggests that subtle dynamic differences in solution and/or altered binding interactions within the active site may account for species-specific inhibition. Structure and inhibition of N-acetylneuraminate lyase from methicillin-resistant Staphylococcus aureus.,North RA, Watson AJ, Pearce FG, Muscroft-Taylor AC, Friemann R, Fairbanks AJ, Dobson RC FEBS Lett. 2016 Dec;590(23):4414-4428. doi: 10.1002/1873-3468.12462. Epub 2016, Nov 7. PMID:27943302[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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This page was last modified 16:30, 18 January 2017.