- cyclin
- cy·clin 'sī-klən, 'sik-lən n any of a group of proteins active in controlling the cell cycle and in initiating DNA synthesis
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cy·clin (siґklin) any of a diverse group of proteins, ranging in size from 35 kD to 90 kD and having a similar core structure, that regulate various phases of the cell cycle by binding to and activating cyclin-dependent kinases and determining the protein to be phosphorylated.
Medical dictionary. 2011.