SGD Paper 
Shinyashiki M, et al. (2004) Inhibition of the yeast metal reductase heme protein fre1 by nitric oxide (NO): a model for inhibition of NADPH oxidase by NO. Free Radic Biol Med 37(5):713-23
Abstract: Nitric oxide (NO) has been found to inhibit the actions of the transmembrane metal reductase Fre1 in the yeast Saccharomyces cerevisiae. This membrane-spanning heme protein is homologous to the gp91(PHOX) protein of the NADPH oxidase enzyme complex and is responsible for reducing extracellular oxidized metals (i.e., ferric and cupric ions) before high-affinity uptake. Consistent with its role in metal metabolism, inhibition of Fre1 by NO also inhibited yeast growth in low-iron medium. Inhibition by NO was found to be O(2)-dependent and irreversible. Further examination of the chemistry responsible for activity loss shows that the generation of N(2)O(3) via NO-O(2) chemistry was responsible for the activity loss, possibly via nitrosation of the protein followed by loss of the heme prosthetic group.
| Status: Published | Type: Journal Article | PubMed ID: 15288128 |
Topics addressed in this paper
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| Topics | Genes linked to topics |
|---|---|
| FRE1 | |
| Function/Process |  |
| Non-Fungal Related Genes/Proteins | |
| Primary Literature | |
| Protein Physical Properties | |
| Regulation of | |
| Substrates/Ligands/Cofactors | |
