Abstract
The murein of a venereal and an intestinal strain of Vibrio fetus was isolated by extraction with hot 4% sodium dodecyl sulfate, indicating the absence of covalently bound protein. Murein was composed of muramic acid, glucosamine, alanine, glutamic acid and diaminopimelic acid in molar ratios of 1:1:2:1:1. Approx. 30% of Dpm molecules were involved in peptide cross linkages and analyses of lysozyme split products indicated a structure similar to that of other Gram-negative genera. Evidence was obtained for the occurrence of chromatographically distinct fractions of the disaccharide tetrapeptide (GlcNAcMurNAc lAla dGlu mesoDpm dAla). Digestion products also included variable concentrations of free murein peptides and glucosamine, whose origin is unexplained. In no instance were differences observed between mureins of intestinal and venereal strains of V. fetus.
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