Nystatin-Resistant Mutants of Yeast: Alterations in Sterol Content
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چکیده
منابع مشابه
Nystatin-resistant mutants of yeast: alterations in sterol content.
Mutants of the genes nys1 and nys3 differ from sensitive strains (nys(+)) in their sterol content. Ultraviolet absorption spectra of the nonsaponifiable material extracted from cells of nys(+) demonstrated the presence of ergosterol and 24(28)-dehydroergosterol. In nys1 mutants, the spectrum suggests the presence of a new sterol. The absorption spectrum of extracts from nys3 mutants indicates a...
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Intraspecific protoplast fusion, induced by polyethylene glycol and Ca2+, was carried out in various pairings between auxotrophic nystatin-sensitive, ergosterol-producing strains of Candida albicans and their nystatin-resistant, ergosterol-less mutants of different origins. Nutritionally-complemented stable heterozygous diploid hybrids were obtained, which proved to be sensitive, semi-resistant...
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In general, attempts to isolate strains of Candida albicans resistant to the commonly employed antifungicide nystatin have been unsuccessful (M. L. Littman, M. A. Pisano, and R. M. Lancaser, Antibiotics Ann. 1957-58, p. 981, 1958; C. K. J. Paniker, P. V. Kurup, and K. Indira Devi, Indian J. Med. Res. 51:846, 1963). A few strains, however, have yielded variants exhibiting threeto fourfold resist...
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Sterol synergism as previously observed [Dahl, C.E., Dahl, J.S. & Bloch, K. (1980) Biochemistry 19, 1462-1467] and defined as a greater-than-additive growth response to pairs of sterols by Mycoplasma capricolum [Dahl, J.S., Dahl, C.E. & Bloch, K. (1981) J. Biol. Chem. 256, 87-91] is now demonstrated in the yeast mutant GL7, which is auxotrophic for sterol and unsaturated fatty acid. Mutant cell...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1971
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.108.1.69-73.1971