A novel pathway of peptide biosynthesis found in methanogenic Archaea

The peptide subunits of the pseudomurein, the cell-wall peptidoglycan of some methanogens, are usually composed of glutamic acid, alanine and lysine. In order to get a more detailed picture of the biosynthetic pathway of the peptide subunit, we performed in vitro assays. Starting from glutamic acid a pentapeptide was obtained in seven steps:

Keywords:	Methanogens  Archaea            Methanobacterium thermoautrophicum            Cell walls  Peptide biosynthesis  Pseudomurein
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