Article
A role for sterol levels in oxygen sensing in Saccharomyces cerevisiae.
Genetics - 1 Sept 2006
Davies Brandon S J, Rine Jasper
Abstract excerpt
Upc2p and Ecm22p are a pair of transcription factors responsible for the basal and induced expression of genes encoding enzymes of ergosterol biosynthesis in yeast (ERG genes). Upc2p plays a second role as a regulator of hypoxically expressed genes. Both sterols and heme depend upon molecular oxygen for their synthesis, and thus the levels of both have the potential to act as indicators of the oxygen environment...
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