Article
Cullin-3 targets cyclin E for ubiquitination and controls S phase in mammalian cells.
Genes & development - 15 Sept 1999
Singer J D, Gurian-West M, Clurman B, Roberts J M
Abstract excerpt
Cyclin E is an unstable protein that is degraded in a ubiquitin- and proteasome- dependent pathway. Two factors stimulate cyclin E ubiquitination in vivo: when it is free of its CDK partner, and when it is phosphorylated on threonine 380. We pursued the first of these pathways by using a two-hybrid screen to identify proteins that could bind only to free cyclin E. This resulted in the isolation of human Cul-3, a...
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