Journal
NATURE CELL BIOLOGY
Volume 12, Issue 7, Pages 686-U130Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncb2071
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Funding
- NCI [CA78419]
- Sass foundation
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The ubiquitin ligase APC/C(Cdh1) coordinates degradation of key cell cycle regulators. We report here that a nuclear-localized portion of the stress-activated kinase JNK is degraded by the APC/C(Cdh1) during exit from mitosis and the G1 phase of the cell cycle. Expression of a non-degradable JNK induces prometaphase-like arrest and aberrant mitotic spindle dynamics. Moreover, JNK phosphorylates Cdh1 directly, during G2 and early mitosis, changing its subcellular localization and attenuating its ability to activate the APC/C during G2/M. This regulatory mechanism between JNK and Cdh1 reveals an important function for JNK during the cell cycle.
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