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© Research
Publication : FEBS letters

Impact of peptidoglycan O-acetylation on autolytic activities of the Enterococcus faecalis N-acetylglucosaminidase AtlA and N-acetylmuramidase AtlB

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in FEBS letters - 15 Aug 2009

Emirian A, Fromentin S, Eckert C, Chau F, Dubost L, Delepierre M, Gutmann L, Arthur M, Mesnage S

Link to Pubmed [PMID] – 19686739

FEBS Lett. 2009 Sep;583(18):3033-8

Autolysins are potentially lethal enzymes that partially hydrolyze peptidoglycan for incorporation of new precursors and septum cleavage after cell division. Here, we explored the impact of peptidoglycan O-acetylation on the enzymatic activities of Enterococcus faecalis major autolysins, the N-acetylglucosaminidase AtlA and the N-acetylmuramidase AtlB. We constructed isogenic strains with various O-acetylation levels and used them as substrates to assay E. faecalis autolysin activities. Peptidoglycan O-acetylation had a marginal inhibitory impact on the activities of these enzymes. In contrast, removal of cell wall glycopolymers increased the AtlB activity (37-fold), suggesting that these polymers negatively control the activity of this enzyme.

http://www.ncbi.nlm.nih.gov/pubmed/19686739