Post-translational fate of CAN1 permease of Saccharomyces cerevisiae

Yeast
M OpekarováW Tanner

Abstract

To study the post-translational fate of arginine permease (Can1p), the gene coding for this transport protein was placed behind a constitutive promoter of plasma membrane ATPase (PMA1) and furnished with a Myc tag. In exponential-phase cells the amount of Can1p is constant, although turnover can be demonstrated. A rapid decrease in transport activity during the early stationary phase is paralleled by a corresponding net degradation of the protein. The amount of Can1p present in exponential cells grown on various nitrogen sources is the same, except in arginine-grown cells, in which the amount of the protein is markedly lower. This occurs solely when arginine serves as nitrogen source but not as an immediate consequence of, for example, arginine addition to cells growing on other nitrogen sources. it was demonstrated that Can1p is phosphorylated. Since Can1p expression under the PMA1 promoter is glucose-dependent, the amount of the permease expressed in high-glucose-grown cells is higher than in low-glucose-grown ones. Only a part of the Can1p overexpressed in high-glucose-grown cells is phosphorylated, while in low-glucose-grown cells the phosphorylated form probably represents the majority of Can1p. The permease phosphorylatio...Continue Reading

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Citations

Oct 11, 2003·Molecular Biology of the Cell·Katerina MalínskáWidmar Tanner
Dec 10, 2008·The Journal of Cell Biology·Guido GrossmannWidmar Tanner
Feb 14, 2018·Microbiology and Molecular Biology Reviews : MMBR·Weiping ZhangJian Chen
Oct 1, 2014·Molecular and Cellular Biology·Kassem GhaddarBruno André
Oct 13, 2018·MicrobiologyOpen·Sheng-Chun YuPietro D Spanu
Nov 19, 2010·Journal of Industrial Microbiology & Biotechnology·Jan Nešvera
Jul 27, 1999·FEMS Microbiology Letters·A Matĕjcková-ForejtováH Sychrová
Mar 8, 2007·Human Molecular Genetics·Seasson Phillips VitielloDavid A Pearce
Dec 15, 2020·Biology of the Cell·Jennifer KahlhoferOliver Schmidt
Dec 4, 2003·Fungal Genetics and Biology : FG & B·Javier Valdez-TaubasAlberto L Rosa

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