Abstract
The amino acid composition and structure of the peptidoglycan from Heliobacillus mobilis was determined by one- and two-dimensional thin-layer chromatography of completely and partially hydrolysed cell wall preparations. The structure was found to be of the A3 gamma type, with L,L-diaminopimelate in position 3, D-alanine in position 4 and a glycine interpeptide bridge, as found in certain groups of Gram-positive bacteria including Clostridium perfringens and Nocardioides simplex. The presence of a Gram-positive type of cell wall in heliobacteria is consistent with their phylogenetic relationship to the 'low G + C' Gram-positive bacteria, as previously demonstrated by 16S rRNA sequencing.
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