A distinct cyclin-dependent kinase-activating kinase of Arabidopsis thaliana
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منابع مشابه
A distinct cyclin-dependent kinase-activating kinase of Arabidopsis thaliana.
The activation of cyclin-dependent kinases (CDKs) requires phosphorylation of a threonine residue within the T-loop catalyzed by CDK-activating kinases (CAKs). Thus far no functional CAK homologue has been reported in plants. We screened an Arabidopsis cDNA expression library for complementation of a budding yeast CAK mutant. A cDNA, cak1At, was isolated that suppressed the CAK mutation in budd...
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Transcription factor IIH (TFIIH) is a multisubunit complex required for transcription and for DNA nucleotide excision repair. TFIIH possesses three enzymatic activities: (i) an ATP-dependent DNA helicase, (ii) a DNA-dependent ATPase, and (iii) a kinase with specificity for the carboxyl-terminal domain of RNA polymerase II. The kinase activity was recently identified as the cdk (cyclin-dependent...
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Cyclin-dependent kinases (CDKs) play essential roles in coordinate control of cell cycle progression. Activation of CDKs requires interaction with specific cyclin partners and phosphorylation of their T-loops by CDK-activating kinases (CAKs). The Arabidopsis thaliana genome encodes four potential CAKs. CAK2At (CDKD;3) and CAK4At (CDKD;2) are closely related to the vertebrate CAK, CDK7/p40MO15; ...
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Several yeast activators are phosphorylated by SRB10, a cyclin-dependent kinase associated with the transcriptional machinery. Sites of phosphorylation are found outside the activating region in each case, and the modification has different physiological consequences in different cases. We show here that certain acidic transcriptional activating regions contact SRB10 as assayed both in vivo and...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1998
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.95.9.5021