MLK3 limits activated Galphaq signaling to Rho by binding to p63RhoGEF.
MLK3 limits activated Galphaq signaling to Rho by binding to p63RhoGEF.
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DOI:
10.1016/j.molcel.2008.09.007
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发表时间:
2008-10-10
期刊:
影响因子:
16
通讯作者:
Means, Anthony R.
中科院分区:
文献类型:
--
作者:
Swenson-Fields, Katherine I.;Sandquist, Joshua C.;Rossol-Allison, Jessica;Blat, Irene C.;Wennerberg, Krister;Burridge, Keith;Means, Anthony R.
Mixed lineage kinase 3 (MLK3) is a MAP3K that activates the JNK-dependent MAPK pathways. Here we show that MLK3 is required for cell migration in a manner independent of its role as a MAP3K or MLK3 kinase activity. Rather, MLK3 functions in a regulated way to limit levels of the activated GTPase, Rho, by binding to the Rho activator, p63RhoGEF/GEFT, which, in turn, prevents its activation by Gαq. These findings demonstrate a scaffolding role for MLK3 in controlling the extent of Rho activation that modulates cell migration. Moreover, they suggest that MLK3 functions as a network hub that links a number of signaling pathways.
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