pubmed-article:10226032 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:10226032 | lifeskim:mentions | umls-concept:C0178453 | lld:lifeskim |
pubmed-article:10226032 | lifeskim:mentions | umls-concept:C1332721 | lld:lifeskim |
pubmed-article:10226032 | lifeskim:mentions | umls-concept:C1413181 | lld:lifeskim |
pubmed-article:10226032 | lifeskim:mentions | umls-concept:C1879547 | lld:lifeskim |
pubmed-article:10226032 | lifeskim:mentions | umls-concept:C1313915 | lld:lifeskim |
pubmed-article:10226032 | lifeskim:mentions | umls-concept:C0425087 | lld:lifeskim |
pubmed-article:10226032 | pubmed:issue | 8 | lld:pubmed |
pubmed-article:10226032 | pubmed:dateCreated | 1999-6-1 | lld:pubmed |
pubmed-article:10226032 | pubmed:abstractText | Cyclin-dependent kinases (Cdks) are fully active only when phosphorylated by a Cdk-activating kinase (CAK) [1]. Metazoan CAK is itself a Cdk, Cdk7, whereas the CAK of Saccharomyces cerevisiae is a distinct enzyme unrelated to Cdks [1]. The Mcs6-Mcs2 complex of Schizosaccharomyces pombe is a putative CAK related to the metazoan enzyme [2] [3]. Although the loss of Mcs6 is lethal, it results in a phenotype that is inconsistent with a failure to activate Cdc2, the major Cdk in S. pombe [3]. We therefore tested the ability of Csk1, a putative regulator of Mcs6 [4], to activate Cdk-cyclin complexes in vitro. Csk1 activated both the monomeric and the Mcs2-bound forms of Mcs6. Surprisingly, Csk1 also activated Cdc2 in complexes with either Cdc13 or Cig2 cyclins. When a double mutant carrying a csk1 deletion and a temperature-sensitive mcs6 allele was incubated at the restrictive temperature, Cdc2 was not activated and the cells underwent a cell division arrest prior to mitosis. Cdc2-cyclin complexes isolated from the arrested cells could be activated in vitro by recombinant CAK, whereas complexes from wild-type cells or either of the single mutants were refractory to activation. Thus, fission yeast contains two partially redundant CAKs: the Mcs6-Mcs2 complex and Csk1. Inactivation of both CAKs is necessary and sufficient to prevent Cdc2 activation and cause a cell-cycle arrest. Mcs6, which is essential, may therefore have required functions other than Cdk activation. | lld:pubmed |
pubmed-article:10226032 | pubmed:language | eng | lld:pubmed |
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pubmed-article:10226032 | pubmed:citationSubset | IM | lld:pubmed |
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pubmed-article:10226032 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:10226032 | pubmed:month | Apr | lld:pubmed |
pubmed-article:10226032 | pubmed:issn | 0960-9822 | lld:pubmed |
pubmed-article:10226032 | pubmed:author | pubmed-author:LeeK MKM | lld:pubmed |
pubmed-article:10226032 | pubmed:author | pubmed-author:BartonW AWA | lld:pubmed |
pubmed-article:10226032 | pubmed:author | pubmed-author:FisherR PRP | lld:pubmed |
pubmed-article:10226032 | pubmed:author | pubmed-author:SaizJ EJE | lld:pubmed |
pubmed-article:10226032 | pubmed:issnType | Print | lld:pubmed |
pubmed-article:10226032 | pubmed:day | 22 | lld:pubmed |
pubmed-article:10226032 | pubmed:volume | 9 | lld:pubmed |
pubmed-article:10226032 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:10226032 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:10226032 | pubmed:pagination | 441-4 | lld:pubmed |
pubmed-article:10226032 | pubmed:dateRevised | 2009-11-19 | lld:pubmed |
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pubmed-article:10226032 | pubmed:year | 1999 | lld:pubmed |
pubmed-article:10226032 | pubmed:articleTitle | Cdc2 activation in fission yeast depends on Mcs6 and Csk1, two partially redundant Cdk-activating kinases (CAKs). | lld:pubmed |
pubmed-article:10226032 | pubmed:affiliation | Cell Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10021, USA. | lld:pubmed |
pubmed-article:10226032 | pubmed:publicationType | Journal Article | lld:pubmed |
pubmed-article:10226032 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
pubmed-article:10226032 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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