Download MendeleyStructure and inhibition of N-acetylneuraminate lyase from methicillin-resistant Staphylococcus aureus.
North, R.A., Watson, A.J., Pearce, F.G., Muscroft-Taylor, A.C., Friemann, R., Fairbanks, A.J., Dobson, R.C.(2016) FEBS Lett 590: 4414-4428
- PubMed: 27943302
- DOI: https://doi.org/10.1002/1873-3468.12462
- Primary Citation of Related Structures:
5KZD, 5KZE - PubMed Abstract:
N-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 K M 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.
Organizational Affiliation:
Biomolecular Interaction Centre, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand.
