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Reference: Dohlman HG and Thorner JW (2001) Regulation of G protein-initiated signal transduction in yeast: paradigms and principles. Annu Rev Biochem 70:703-54

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Abstract

Annu. Rev. Biochem. 2001. 70:703-754.REGULATION OF G PROTEININITIATED SIGNAL TRANSDUCTION IN YEAST: Paradigms and PrinciplesHenrik G. Dohlman(1) and Jeremy W. Thorner(2) (1)Department of Pharmacology and the Boyer Center for Molecular Medicine, Yale University School of Medicine, New Haven, Connecticut 06536-0812, e-mail: henrik.dohlman@yale.edu(2)Department of Molecular and Cell Biology, Division of Biochemistry and Molecular Biology, University of California, Berkeley, California 94720-3202; e-mail: jeremy@socrates.berkeley.edureceptor, heterotrimeric G protein, protein kinase cascade, desensitization, Cdc42, phosphorylation, ubiquitination, localization, Saccharomyces cerevisiaeAll cells have the capacity to evoke appropriate and measured( )responses to signal molecules (such as peptide hormones), environmental( )changes, and other external stimuli. Tremendous progress has( )been made in identifying the proteins that mediate cellular( )response to such signals and in elucidating how events at the( )cell surface are linked to subsequent biochemical changes in( )the cytoplasm and nucleus. An emerging area of investigation( )concerns how signaling components are assembled and regulated( )(both spatially and temporally), so as to control properly the( )specificity and intensity of a given signaling pathway. A related( )question under intensive study is how the action of an individual( )signaling pathway is integrated with (or insulated from) other( )pathways to constitute larger networks that control overall( )cell behavior appropriately. This review describes the signal( )transduction pathway used by budding yeast (Saccharomyces cerevisiae)( )to respond to its peptide mating pheromones. This pathway is( )comprised by receptors, a heterotrimeric G protein, and a protein( )kinase cascade all remarkably similar to counterparts in multicellular( )organisms. The primary focus of this review, however, is recent( )advances that have been made, using primarily genetic methods,( )in identifying molecules responsible for regulation of the action( )of the components of this signaling pathway. Just as many of( )the constituent proteins of this pathway and their interrelationships( )were first identified in yeast, the functions of some of these( )regulators have clearly been conserved in metazoans, and others( )will likely serve as additional models for molecules that carry( )out analogous roles in higher organisms.( )

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Dohlman HG, Thorner JW
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