MAP4K4 Antibody – Rabbit Polyclonal

The protein encoded by this gene is a member of the serine/threonine protein kinase family. This kinase has been shown to specifically activate MAPK8/JNK. The activation of MAPK8 by this kinase is found to be inhibited by the dominant-negative mutants of MAP3K7/TAK1, MAP2K4/MKK4, and MAP2K7/MKK7, which suggests that this kinase may function through the MAP3K7-MAP2K4-MAP2K7 kinase cascade, and mediate the TNF-alpha signaling pathway. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

HGK: a Ser/Thr kinase of the STE20 subfamily. May play a role in the response to environmental stress and cytokines such as TNF-alpha. May interact with the SH3 domain of the adapter proteins Nck. Binds, via its CNH regulatory domain, to the N- terminal region of SPG3A. Upregulated in primary tumors and tumor cell lines. Required for anchorage-independent growth and ras-dependent focus formation in multiple cell lines. 5 isoforms of the human protein are produced by alternative splicing.

Protein type: Protein kinase, STE; Kinase, protein; EC 2.7.11.1; Protein kinase, Ser/Thr (non-receptor); STE group; STE20 family; MSN subfamily

Chromosomal Location of Human Ortholog: 2q11.2-q12

Cellular Component: cytoplasm

Molecular Function: protein serine/threonine kinase activity; protein binding; ATP binding; receptor signaling protein serine/threonine kinase activity

Biological Process: microvillus biogenesis; regulation of catalytic activity; protein amino acid phosphorylation; regulation of JNK cascade