Reference: Messenguy F and Dubois E (1993) Genetic evidence for a role for MCM1 in the regulation of arginine metabolism in Saccharomyces cerevisiae. Mol Cell Biol 13(4):2586-92

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Abstract


ARGRI, ARGRII, and ARGRIII regulatory proteins control the expression of arginine anabolic and catabolic genes in Saccharomyces cerevisiae. We have shown that MCM1 is part of the ARGR regulatory complex, by in vitro binding experiments, at the ARGR5,6 promoter. The participation of MCM1 in the regulation of arginine metabolism is confirmed by the behavior of an mcm1-gcn4 mutant, which is affected in the repression of arginine anabolic genes. In this mcm1 mutant, synthesis of the catabolic enzymes is rather constitutive, but this derepression requires the integrity of the ARGR system and of the target sequences of these proteins in the CAR1 promoter. Our in vitro binding experiments confirm the presence of MCM1 in the protein complex interacting with the promoters of the catabolic CAR1 and CAR2 genes. This is the first in vivo transcription role ascribed to MCM1 other than its role in the transcription of cell-type-specific genes.

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Journal Article | Research Support, Non-U.S. Gov't
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Messenguy F, Dubois E
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