1k0b

Structural highlights

Function

URE2_YEAST Plays an important role in nitrogen catabolite repression. Down-regulates the expression of many genes involved in nitrogen utilization by inhibiting the GATA transcriptional activators GLN3 and GAT1. Under good nitrogen conditions, binds to the phosphorylated forms of GLN3 and GAT1 and sequesters them in the cytoplasm, preventing transcription of genes expressed upon nitrogen limitation. Is also an atypical glutaredoxin without a catalytical cysteine residue. Has glutathione peroxidase and thiol:disulfide oxidoreductase activities in both native and fibrillar form. Also shows insulin disulfide reductase and dehydroascorbic acid reductase (DHAR) actvites.^{[1] [2] [3] [4] [5] [6]}

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

• Prion 3D structures

References

1. ↑ Coschigano PW, Magasanik B. The URE2 gene product of Saccharomyces cerevisiae plays an important role in the cellular response to the nitrogen source and has homology to glutathione s-transferases. Mol Cell Biol. 1991 Feb;11(2):822-32. PMID:1990286
2. ↑ Blinder D, Coschigano PW, Magasanik B. Interaction of the GATA factor Gln3p with the nitrogen regulator Ure2p in Saccharomyces cerevisiae. J Bacteriol. 1996 Aug;178(15):4734-6. PMID:8755910
3. ↑ Beck T, Hall MN. The TOR signalling pathway controls nuclear localization of nutrient-regulated transcription factors. Nature. 1999 Dec 9;402(6762):689-92. PMID:10604478 doi:http://dx.doi.org/10.1038/45287
4. ↑ Cunningham TS, Andhare R, Cooper TG. Nitrogen catabolite repression of DAL80 expression depends on the relative levels of Gat1p and Ure2p production in Saccharomyces cerevisiae. J Biol Chem. 2000 May 12;275(19):14408-14. PMID:10799523
5. ↑ Bai M, Zhou JM, Perrett S. The yeast prion protein Ure2 shows glutathione peroxidase activity in both native and fibrillar forms. J Biol Chem. 2004 Nov 26;279(48):50025-30. Epub 2004 Sep 15. PMID:15371425 doi:http://dx.doi.org/10.1074/jbc.M406612200
6. ↑ Zhang ZR, Perrett S. Novel glutaredoxin activity of the yeast prion protein Ure2 reveals a native-like dimer within fibrils. J Biol Chem. 2009 May 22;284(21):14058-67. doi: 10.1074/jbc.M901189200. Epub 2009, Mar 25. PMID:19321443 doi:http://dx.doi.org/10.1074/jbc.M901189200