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Nature Cell Biology 9, 137–138 (1 February 2007) | doi:10.1038/ncb0207-137

The pRb|[ndash]|Cdh1|[ndash]|p27 autoamplifying network

Patricia G. Santamar|[iacute]|a & Michele Pagano

It is well established that the ubiquitin–proteasome system firmly controls the progression through the cell division cycle by the timely destruction of key cell-cycle regulators. A prominent role is played by the anaphase promoting complex or cyclosome (APC/C), a ubiquitin ligase that mediates progression through and exit from mitosis, and the maintenance of the G0–G1 state.