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MAPK8

Engineered Antibody
The protein encoded by this gene is a member of the MAP kinase family. MAP kinases act as an integration point for multiple biochemical signals, and are involved in a wide variety of cellular processes such as proliferation, differentiation, transcription regulation and development. This kinase is activated by various cell stimuli, and targets specific transcription factors, and thus mediates immediate-early gene expression in response to cell stimuli. The activation of this kinase by tumor-necrosis factor alpha (TNF-alpha) is found to be required for TNF-alpha induced apoptosis. This kinase is also involved in UV radiation induced apoptosis, which is thought to be related to cytochrom c-mediated cell death pathway. Studies of the mouse counterpart of this gene suggested that this kinase play a key role in T cell proliferation, apoptosis and differentiation. Several alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Apr 2016]
Protein class

Cancer-related genes, Enzymes, Metabolic proteins, RAS pathway related proteins

Predicted location

Intracellular

Single cell type specificity

Cell type enhanced (Oligodendrocyte precursor cells, Inhibitory neurons, Excitatory neurons, Oligodendrocytes, Early spermatids)

Immune cell specificity

Low immune cell specificity

Cell line specificity

Low cell line specificity

Interaction

Forms a complex with MAPK8IP1 and ARHGEF28 (By similarity). Found in a complex with SH3RF1, RAC1, MAP3K11/MLK3, MAP2K7/MKK7 and MAPK8IP1/JIP1. Found in a complex with SH3RF1, RAC2, MAP3K7/TAK1, MAP2K7/MKK7, MAPK8IP1/JIP1 and MAPK9/JNK2 (By similarity). Binds to at least four scaffolding proteins, MAPK8IP1/JIP-1, MAPK8IP2/JIP-2, MAPK8IP3/JIP-3/JSAP1 and SPAG9/MAPK8IP4/JIP-4 (PubMed:15693750). These proteins also bind other components of the JNK signaling pathway. Interacts with TP53 and WWOX (PubMed:12514174). Interacts with JAMP (By similarity). Interacts with HSF1 (via D domain and preferentially with hyperphosphorylated form); this interaction occurs under both normal growth conditions and immediately upon heat shock (PubMed:10747973). Interacts (phosphorylated form) with NFE2; the interaction phosphorylates NFE2 in undifferentiated cells (By similarity). Interacts with NFATC4 (PubMed:17875713). Interacts with MECOM; regulates JNK signaling (PubMed:10856240). Interacts with PIN1; this interaction mediates MAPK8 conformational changes leading to the binding of MAPK8 to its substrates (PubMed:21660049). Interacts with GRIPAP1 (PubMed:17761173). Interacts with POU5F1; phosphorylates POU5F1 at 'Ser-355'. Interacts with STMN2, STMN3 and STMN4 (By similarity). Interacts with HSF4 (PubMed:16581800).

Molecular function

Kinase, Serine/threonine-protein kinase, Transferase

More Types Infomation
Related Signaling Pathways
FcεR1 Signaling Pathway FcεR1 Signaling Pathway
TCR Signaling Pathway TCR Signaling Pathway
Related Diseases
Maturity Onset Diabetes of the Young Maturity Onset Diabetes of the Young

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