[en] The autolysin of Lactobacillus acidophilus strain 63 AM Gasser has the specificity of an endo-N-acetylmur-amidase. It hydrolyzes both N-acetylmuramic acid and N, O-diacetylmuramic acid linkages. It does not exhibit any amidase or endopeptidase action. It is present in both log-phase and stationary-phase cells.
In stationary-phase cells its action upon the wall peptido-glycan is inhibited.