Abstract
How extracellular signals communicate with the cell cycle is poorly understood. In this issue, two papers (Grimmler et al., 2007; Chu et al., 2007) address this problem by reporting phosphorylation of the cyclin-dependent kinase inhibitor p27Kip1 on a tyrosine residue by nonreceptor tyrosine kinases, which decreases p27 stability. This new mechanism could explain how cells enter the cell cycle from a quiescent state.
Original language | English |
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Pages (from-to) | 241-244 |
Journal | Cell |
Volume | 128 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2007 Jan 26 |
Externally published | Yes |