Reference: Stocchetto S, et al. (1997) Biochemical evidence that Saccharomyces cerevisiae YGR262c gene, required for normal growth, encodes a novel Ser/Thr-specific protein kinase. FEBS Lett 414(1):171-5

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Abstract


Saccharomyces cerevisiae YGR262c gene, whose disruption causes severely defective growth, encodes a putative protein kinase shorter than any other protein kinase biochemically characterized to date and lacking some of the conserved features of these enzymes. Here we show that the product of the YGR262c gene, piD261, expressed in E. coli with a C-terminal (His)6 tag, is a bona fide Ser/Thr protein kinase as judged from its capability to autophosphorylate and to phosphorylate casein and osteopontin in the presence of [gamma-32P]ATP. In contrast, no phosphorylation of histones, myelin basic protein, phosvitin, bovine serum albumin and poly(Glu/Tyr)4:1 could be detected. Mn2+ or, less effectively, Co2+ are required for piD261 catalytic activity, which is conversely undetectable in the presence of Mg2+, a behaviour unique among Ser/Thr protein kinases.

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Journal Article | Research Support, Non-U.S. Gov't
Authors
Stocchetto S, Marin O, Carignani G, Pinna LA
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