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- W2110566745 abstract "In Schizosaccharomyces pombe, alcohol dehydrogenase 1 (Adh1) is an abundant zinc-requiring enzyme that catalyses the conversion of acetaldehyde to ethanol during fermentation. In a zinc-replete cell, adh1 is highly expressed. However, in zinc-limited cells, adh1 gene expression is repressed, and cells induce the expression of an alternative alcohol dehydrogenase encoded by the adh4 gene. In our studies examining this zinc-dependent switch in alcohol dehydrogenase gene expression, we isolated an adh1Δ strain containing a partial loss of function mutation that resulted in higher levels of adh4 transcripts in zinc-replete cells. This mutation also led to the aberrant expression of other genes that are typically regulated by zinc. Using linkage analysis, we have mapped the position of this mutation to a single gene called Loss Of Zinc sensing 1 (loz1). Loz1 is a 55-kDa protein that contains a double C2H2-type zinc finger domain. The mapped mutation that disrupts Loz1 function leads to an arginine to glycine substitution in the second zinc finger domain, suggesting that the double zinc finger domain is important for Loz1 function. We show that loz1Δ cells hyperaccumulate zinc and that Loz1 is required for gene repression in zinc-replete cells. We also have found that Loz1 negatively autoregulates its own expression. We propose that Loz1 is a unique metalloregulatory factor that plays a central role in zinc homeostasis in S. pombe." @default.
- W2110566745 created "2016-06-24" @default.
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- W2110566745 date "2013-09-03" @default.
- W2110566745 modified "2023-10-01" @default.
- W2110566745 title "Zinc finger protein Loz1 is required for zinc-responsive regulation of gene expression in fission yeast" @default.
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- W2110566745 doi "https://doi.org/10.1073/pnas.1300853110" @default.
- W2110566745 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3780850" @default.
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