title: Amino acid composition of peptidoglycan in Caulobacter crescentus.
abstract: Peptidoglycan of a gram-negative stalked bacterium, Caulobacter crescentus CB13, contained alanine, diaminopimelic acid, and glutamic acid, in molar ratios of 2 : 1 : 1. The amino acid compositions of peptidoglycans isolated from cultures enriched in swarmer and stalked cells, and from a stalk-less mutant were similar. This finding conflicts with a previous observation that swarmer peptidoglycan does not contain diaminopimelic acid (Goodwin and Shedlarski (1975) Arch. Biochem. Biophys. 170, 23-36). It appears that, despite the morphological differences, the Caulobacter cells all contain a similar peptidoglycan in the cell wall.
mesh_terms: D000409:Alanine / Q000032:analysis; D000596:Amino Acids / Q000032:analysis*; D002473:Cell Wall / Q000032:analysis; D003960:Diaminopimelic Acid / Q000032:analysis; D005971:Glutamates / Q000032:analysis; D006088:Gram-Negative Aerobic Bacteria / Q000032:analysis*; D009154:Mutation; D010457:Peptidoglycan / Q000032:analysis*
chemical_list: D000596:Amino Acids; D005971:Glutamates; D010457:Peptidoglycan; D003960:Diaminopimelic Acid; D000409:Alanine