MAP3K8
Reactivity: Human, Rat, Mouse
WB, ELISA, IHC (p), IF (cc), IF (p), IHC (fro), FACS
Host: Rabbit
Polyclonal
unconjugated
Application Notes
ELISA: 1/40000approx. 1/60000. Western Blot: 1/500approx. 1/1000. Immunofluorescence: 1/50approx. 1/200. Immunohistochemistry: 1/50approx. 1/200. Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
The role of mitogen-activated protein kinases (MAPKs) in cell signaling pathways is well established. The rat gene Tpl-2, for tumor progression locus 2, and the human and mouse homologues c-Cot, for cancer osaka thyroid oncogene, encode a proto-oncogene serine/threonine protein kinase that was shown to play a role in the functional activation of the MAP kinase pathway. Overexpression of Cot induces MAP kinase activation in COS-1 and NIH/3T3 cells. Cot-mediated activation of MAP kinase is inhibited by both Ras N17, a dominant negative mutant of c-H-Ras, and Raf-1s621A, a dominant negative mutant of Raf-1, suggesting that Cot functions upstream of Ras and Raf-1.Other studies have shown that a kinase-negative, dominant negative mutant of Cot partially blocks Ras or Raf-1-induced MAP kinase activation, arguing that Cot functions downstream of Ras and Raf-1. To explain these contrasting findings, it has been suggested that Cot, Ras and Raf-1 may form a multimeric complex that phosphorylates MEK-1. Cot has also been shown to be implicated in T lymphocyte activation.Synonyms: COT, COT proto-oncogene serine/threonine-protein kinase, Cancer Osaka thyroid oncogene, ESTF, MAPK, Mitogen-activated protein kinase kinase kinase 8, Tumor progression locus 2, Tumor progression locus 2