期刊
MOLECULAR CELL
卷 52, 期 5, 页码 679-692出版社
CELL PRESS
DOI: 10.1016/j.molcel.2013.10.004
关键词
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资金
- Children with Cancer
- MRC [G0801150]
- Biomedical Technology Research Centers program of the NIH National Institute of General Medical Sciences, NIH NIGMS [8P41GM103481, 1S10RR019934]
- Medical Research Council [G0801150] Funding Source: researchfish
- MRC [G0801150] Funding Source: UKRI
SHOC2 is mutated in Noonan syndrome and plays a key role in the activation of the ERK-MAPK pathway, which is upregulated in the majority of human cancers. SHOC2 functions as a PP1-regulatory protein and as an effector of MRAS. Here we show that SHOC2 and MRAS form a complex with SCRIB, a polarity protein with tumor suppressor properties. SCRIB functions as a PP1-regulatory protein and antagonizes SHOC2-mediated RAF dephosphorylation through a mechanism involving competition for PP1 molecules within the same macromolecular complex. SHOC2 function is selectively required for the malignant properties of tumor cells with mutant RAS, and both MRAS and SHOC2 play a key role in polarized migration. We propose that MRAS, through its ability to recruit a complex with paradoxical components, coordinates ERK pathway spatiotemporal dynamics with polarity and that this complex plays a key role during tumorigenic growth.
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