Synthesis of the monomer and dimer peptide fragments of the Micrococcus lysodeikticus cell wall peptidoglycan. 1976

M Mulliez, and D Blanot, and J Savrda, and E Bricas

Three branched peptides, namely pentapeptide A and the two decapeptides B and C corresponding respectively to the monomer and the two dimer peptide fragments of the M. lysodeikticus cell wall peptidoglycan, were synthetized by adequate methods of peptide synthesis in homogeneous phase. The synthetized peptides showed the same electrophoretic and chromatographic behavior as the natural peptide fragments. Only decapeptide B was hydrolysed by the Myxobacter AL-1 protease by cleavage of the D-Ala-L-Ala bond and inversely, only decapeptide C was digested by the Streptomyces albus ML endopeptidase by cleavage of the D-Ala-epsilon-Lys linkage. In both enzymatic hydrolyses the pentapeptide monomer was formed.

UI MeSH Term Description Entries
D008837 Micrococcus A genus of gram-positive, spherical bacteria found in soils and fresh water, and frequently on the skin of man and other animals.
D009842 Oligopeptides Peptides composed of between two and twelve amino acids. Oligopeptide
D010457 Peptidoglycan A structural polymer of the bacterial cell envelope consisting of sugars and amino acids which is responsible for both shape determination and cellular integrity under osmotic stress in virtually all bacteria. Murein,Pseudomurein
D002473 Cell Wall The outermost layer of a cell in most PLANTS; BACTERIA; FUNGI; and ALGAE. The cell wall is usually a rigid structure that lies external to the CELL MEMBRANE, and provides a protective barrier against physical or chemical agents. Cell Walls,Wall, Cell,Walls, Cell
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino

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