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Cell wall polymers of actinomadura carminata ina 4281



Cell wall polymers of actinomadura carminata ina 4281



Archives of Microbiology 146(3): 256-262



The cell walls of Actinomadura carminata INA 4281 were found to contain peptidoglycan, teichoic acid, and nonpeptidoglycan amino acids. The peptidoglycan was of the A1.gamma. type and contained a small amount of LL-DAP in addition to m-DAP. The teichoic acid was an 1,3-poly(glycerol phosphate) chain composed of about eight glycerophosphate units, two of which had a 2-acetamido-2-deoxy-.alpha.-D-galactopyranosyl substituent and one, a 3-O-methyl-.beta.-D-galactopyranosyl-(1 .fwdarw. 3)-2-acetamido-2-deoxy-.alpha.-D-galactopyranosyl residue at C2 of glycerol. The structure of the polymer was identified by chemical analysis and 13C-NMR spectroscopy. The teichoic acid contained 3-O-methyl-D-galactose (madurose)-the first ever finding of this compound within a teichoic acid. The nonpeptidoglycan amino acids made up some 30% of the cell wall's dry weight, about a quarter of the amino acids being removable with sodium dodecyl sulfate. Further treatment of the cell walls with LiCl and guanidine hydrochloride caused only a small loss of the amino acids and slight changes in their molar ratio.

Accession: 004894814

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DOI: 10.1007/bf00403226

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