Any of a number of proteins associated with the cycle of cell division which are thought to initiate certain processes of mitosis.
- Proteasome degradation of cyclins involved in cell cycle regulation has been well documented.
- Tyrosine kinases associated with cyclins have also been shown to be affected by vitamin K, which can lead to cell cycle arrest and cell death.
- In general, cyclins are proteins that regulate the cell cycle by combining with cyclin dependent kinases to form an enzymatic complex.
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