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  • Title: Amino acid composition of peptidoglycan in Caulobacter crescentus.
    Author: Fujiki K, Fukuda A, Okada Y.
    Journal: J Biochem; 1976 Dec; 80(6):1453-5. PubMed ID: 1018023.
    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.
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