期刊
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
卷 1763, 期 7, 页码 636-645出版社
ELSEVIER
DOI: 10.1016/j.bbamcr.2006.05.008
关键词
yeast; siderophore; transport; iron; fungi; ferrichrome
资金
- Intramural NIH HHS Funding Source: Medline
Fungi have a remarkable capacity to take up iron when present in any of a wide variety of forms, which include free iron ions, low-affinity iron chelates, siderophore-iron chelates, transferrin, heme, and hemoglobin. Appropriately, these unicellular eukaryotes express a variety of iron uptake systems, some of which are unique to fungi and some of which are present in plants and animals, as well. The reductive system of uptake relies upon the external reduction of ferric salts, chelates, and proteins prior to uptake by a high-affinity, ferrous-specific, oxidase/permease complex. This system recognizes a broad range of substrates. The non-reductive system exhibits specificity for siderophore-iron chelates, and transporters of this system exhibit multiple substrate-dependent intracellular trafficking events. (c) 2006 Elsevier B.V. All rights reserved.
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