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. 1967 Oct;94(4):875–883. doi: 10.1128/jb.94.4.875-883.1967

Comparative Cell Wall Analyses of Morphological Forms Within the Genus Actinomyces

Leo Pine 1, Clarence J Boone 1
PMCID: PMC276748  PMID: 6051359

Abstract

Comparative cell wall analyses were made of mycelial and smooth forms of Actinomyces bovis and A. israelii to determine the changes which occur in the cell wall composition concurrent with a change in morphology, and to evaluate cell wall analyses as a criterion for taxonomic identification within the genus Actinomyces. Cell walls of the spider forms of A. boyis had little or no aspartic acid and a high hexosamine concentration; cell walls of the smooth forms had a high aspartic acid content and low concentrations of hexosamine. Both forms had large amounts of glutamic acid, alanine, and lysine, as previously reported. A strain of Actinomyces, previously identified as A. naeslundii on the basis of morphology and aerobic growth characteristics, was found to have the basic cell wall composition of A. israelii. When transferred from the Actinomyces maintenance broth to a thioglycolate broth, the cells of this strain passed from a mycelial form through a transient filamentous morphology to become diphtheroidal with continued incubation. Concomitantly, the concentrations of glutamic acid relative to alanine decreased, and the hexosamine content increased. Variation in morphology within the species A. israelii and A. bovis could not be related to any mutual chemical change of their cell walls.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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