期刊
JOURNAL OF BIOLOGICAL CHEMISTRY
卷 292, 期 31, 页码 12764-12771出版社
AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
DOI: 10.1074/jbc.R117.791962
关键词
iron; iron metabolism; iron-sulfur protein; metalloprotein; molecular chaperone; BolA2; poly C-binding protein; glutaredoxin
资金
- Intramural Research Program of the NIDDK
- Office of Dietary Supplements, Office of the Director, National Institutes of Health
Eukaryotic cells contain hundreds of metalloproteins that are supported by intracellular systems coordinating the uptake and distribution of metal cofactors. Iron cofactors include heme, iron-sulfur clusters, and simple iron ions. Poly(rC)-binding proteins are multifunctional adaptors that serve as iron ion chaperones in the cytosolic/nuclear compartment, binding iron at import and delivering it to enzymes, for storage (ferritin) and export (ferroportin). Ferritin iron is mobilized by autophagy through the cargo receptor, nuclear co-activator 4. The monothiol glutaredoxin Glrx3 and BolA2 function as a [2Fe-2S] chaperone complex. These proteins form a core system of cytosolic iron cofactor chaperones in mammalian cells.
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