concept

Lysozyme

Lysozyme, also called muramidase (peptidoglycan N-acetylmuramoyl hydrolase; EC 3.2.1.17), catalyzes the hydrolysis of β1 → 4-linkages between N-acetylmuramic acid and N-acetyl-β-glucosamine residues in peptidoglycan, a constituent of bacterial cell walls. Lysozyme acts mostly on Gram-positive bacteria and a few Gram-negative bacteria. Gram-positive bacteria are more susceptible to the action of lysozyme because their cell wall contains up to 90% peptidoglycan, whereas Gram-negative bacteria are more resistant because of the smaller amount of peptidoglycan in their cell wall.

Ref:
N.Y. Farkye, N. Bansal, Enzymes Indigenous to Milk | Other Enzymes, Editor(s): John W. Fuquay, Encyclopedia of Dairy Sciences (Second Edition), Academic Press, 2011, Pages 327-334, ISBN 9780123744074, https://doi.org/10.1016/B978-0-12-374407-4.00162-X. (https://www.sciencedirect.com/science/article/pii/B978012374407400162X)

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Added on Sep 24, 2022 by Barbara Van De Keer

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