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J Biol Chem. 2001 Mar 23;276(12):8631-4. Epub 2001 Jan 31.

BMK1 mediates growth factor-induced cell proliferation through direct cellular activation of serum and glucocorticoid-inducible kinase.

Author information

1
Department of Immunology, The Scripps Research Institute, La Jolla, California 92037, USA.

Abstract

Activation of the mammalian mitogen-activated protein kinase known as BMK1 is required for growth factor-induced cell proliferation. To understand the mechanism by which BMK1 mediates this cellular response, this kinase was used as bait in a yeast two-hybrid-based library screening. Here, we report the identification of serum and glucocorticoid-inducible kinase (SGK) as a cellular protein that physically interacts with BMK1. During growth factor-induced cell stimulation, BMK1 activates SGK by phosphorylation at serine 78. This BMK1-mediated phosphorylation event is necessary for the activation of SGK and, more importantly, for cell proliferation induced by growth factors.

PMID:
11254654
DOI:
10.1074/jbc.C000838200
[Indexed for MEDLINE]
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