Title : Mitotic arrest by tumor suppressor RASSF1A is regulated via CHK1 phosphorylation.

Pub. Date : 2014 Jan

PMID : 24197116






3 Functional Relationships(s)
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1 Using tandem mass spectrometry and biochemical analysis, it was determined that CHK1 phosphorylates RASSF1A on Serine 184, which has been shown to be mutated in a subset of human primary nasopharyngeal carcinomas. Serine Ras association domain family member 1 Homo sapiens
2 Furthermore, Serine 184 phosphorylation of RASSF1A was significantly diminished by a CHK1-specific kinase inhibitor. Serine Ras association domain family member 1 Homo sapiens
3 IMPLICATIONS: This study reveals that CHK1-mediated phosphorylation of RASSF1A, at Serine 184, plays an important role in cell-cycle regulation and highlights that mutation of this CHK1 phosphorylation site in nasopharyngeal carcinoma has disease relevance. Serine Ras association domain family member 1 Homo sapiens