BIOSYNTHESIS OF DIPICOLINIC ACID IN BACILLUS MEGATERIUM
نویسندگان
چکیده
منابع مشابه
Biosynthesis of dipicolinic acid in Bacillus megaterium.
Very little is known of the precursors of the dipicolinic acid (pyridine-2,6-dicarboxylic acid) in bacterial spores. C'4-2,6-diaminopimelic acid was shown to contribute to the formation of dipicolinic acid in Bacillus cereus var. mycoides (Perry and Foster, 1955; Foster, 1956) but the efficiency of the conversion was low, possibly because of a slow penetration of the cells by the exogenously su...
متن کاملDipicolinic acid location in intact spores of Bacillus megaterium.
Beta-attenuation analysis of intact spores of Bacillus megaterium containing tritium-labeled dipicolinic acid has shown that dipicolinic acid is located in the spore protoplast and not in the cortex.
متن کاملInduced release of dipicolinic acid from spores of Bacillus megaterium.
Conditions under which dipicolinic acid may be released from bacterial spores probably relate to the chemical state of the dipicolinic acid in the spore, to its physical location in the spore, and to its influence on the physiological properties of the spore. The latter aspect embraces the relation between release of dipicolinic acid and the viability of the spore, its heat resistance, and its ...
متن کاملBiosynthesis of Nucleic Acids in Bacillus megaterium
So-called 'chromatin b)odies' have been observed in whole cells, protoplasts and spores of Bacillus megaterium by cytological and electron-microscopical techniques (Fitzjames, 1953, 1958; Robinow, 1956). In ultra-thin sections of whole cells the chromatin body appears as an area less electron-dense than the surrounding cytoplasm and made up of a network of fine fibrils with no bounding membrane...
متن کاملDipicolinic acid-less mutants of Bacillus cereus.
When J. Powell (Biochem. J. 54:210, 1953) established dipicolinic acid (DPA) as an important constituent of bacterial spores, microbiologists became concerned about the function this compound serves and about its biosynthetic pathway. It is now generally considered that DPA is involved in the heat resistance of spores, but the mechanism is unknown. A number of schemes have been proposed for its...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1958
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.76.2.167-178.1958