Ferrichrome in Schizosaccharomyces pombe--an iron transport and iron storage compound.
[No authors listed]
摘要
Schizosaccharomyces pombe has been assumed not to produce siderophores. Nevertheless, the genomic sequence of this fission yeast revealed the presence of siderophore biosynthetic genes for hydroxamates. Applying a bioassay based on an Aspergillus nidulans strain deficient in siderophore biosynthesis, and using reversed-phase HPLC and mass spectrometry analysis, we demonstrate that S. pombe excretes and accumulates intracellularly the hydroxamate-type siderophore ferrichrome. Under iron-limiting conditions, the cellular ferrichrome pool was present in the desferri-form, while under iron-richconditions, in the ferri-form. In contrast to S. pombe, hydroxamate-type siderophores could not be detected intwo other yeast species, Saccharomyces cerevisiae and Candida albicans.
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基因功能
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原始数据
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文献解读
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