Phenotypic effects of membrane protein overexpression in Saccharomyces cerevisiae.
2006 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 103, no 30, 11148-11153 p.Article in journal (Refereed) Published
Large-scale protein overexpression phenotype screens provide an important complement to the more common gene knockout screens. Here, we have targeted the so far poorly understood Saccharomyces cerevisiae membrane proteome and report growth phenotypes for a strain collection overexpressing ≈600 C-terminally tagged integral membrane proteins grown both under normal and three different stress conditions. Although overexpression of most membrane proteins reduce the growth rate in synthetic defined medium, we identify a large number of proteins that, when overexpressed, confer specific resistance to various stress conditions. Our data suggest that regulation of glycosylphosphatidylinositol anchor biosynthesis and the Na+/K+ homeostasis system constitute major downstream targets of the yeast PKA/RAS pathway and point to a possible connection between the early secretory pathway and the cells’ response to oxidative stress. We also have quantified the expression levels for >550 membrane proteins, facilitating the choice of well expressing proteins for future functional and structural studies.
Place, publisher, year, edition, pages
2006. Vol. 103, no 30, 11148-11153 p.
Caffeine/pharmacology, Cluster Analysis, Fungal Proteins/chemistry, Gene Expression Regulation; Fungal, Genome; Fungal, Green Fluorescent Proteins/metabolism, Membrane Proteins/biosynthesis/*chemistry, Oxidative Stress, Phenotype, Plasmids/metabolism, Protein Structure; Tertiary, Saccharomyces cerevisiae/*metabolism, Saccharomyces cerevisiae Proteins/chemistry, Salts/pharmacology
IdentifiersURN: urn:nbn:se:su:diva-18775DOI: 10.1073/pnas.0604078103PubMedID: 16847257OAI: oai:DiVA.org:su-18775DiVA: diva2:185298