CDK-independent activities of D type cyclins

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Plant D-type cyclins and the control of G1 progression.

The basic pattern of controls that operate during the G1 phase of the plant cell cycle shows much closer similarity to animals than to the yeasts and other fungi. The activity of D-type cyclin (CycD) kinases is induced in response to stimulatory signals, and these phosphorylate the plant homologue of the retinoblastoma tumour susceptibility (Rb) protein. It is likely that Rb phosphorylation res...

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Complexes of D-type cyclins with CDKs during maize germination

The importance of cell proliferation in plant growth and development has been well documented. The majority of studies on basic cell cycle mechanisms in plants have been at the level of gene expression and much less knowledge has accumulated in terms of protein interactions and activation. Two key proteins, cyclins and cyclin-dependent kinases (CDKs) are fundamental for cell cycle regulation an...

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Rescue of defective mitogenic signaling by D-type cyclins.

Three gene products, including Myc and the D- and E-type G1 cyclins, are rate limiting for G1 progression in mammalian fibroblasts. Quiescent mouse NIH 3T3 fibroblasts engineered to express a mutant colony-stimulating factor (CSF-1) receptor (CSF-1R 809F) fail to synthesize c-myc and cyclin D1 mRNAs upon CSF-1 stimulation and remain arrested in early G1 phase. Ectopic expression of c-myc or eit...

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Negative regulation of TSC1-TSC2 by mammalian D-type cyclins.

The metazoan cell cycle is driven by the timely and composite activities of cyclin-dependent kinases (CDKs). Among these, cyclin D- and cyclin E-dependent kinases phosphorylate the pRb family proteins during G(1) phase of the cell cycle and thereby advance cells beyond the restriction point. Increasing evidence suggests that cyclin D-dependent kinases might affect events other than Rb pathway-m...

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Genomic organization and evolutionary conservation of plant D-type cyclins.

Plants contain more genes encoding core cell cycle regulators than other organisms but it is unclear whether these represent distinct functions. D-type cyclins (CYCD) play key roles in the G1-to-S-phase transition, and Arabidopsis (Arabidopsis thaliana) contains 10 CYCD genes in seven defined subgroups, six of which are conserved in rice (Oryza sativa). Here, we identify 22 CYCD genes in the po...

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ژورنال

عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Reviews on Cancer

سال: 1999

ISSN: 0304-419X

DOI: 10.1016/s0304-419x(99)00024-4