Description
Product Characteristics:
The product of this gene functions in the NF-kappaB signal transduction pathway. The encoded protein, and the similar and functionally redundant protein MAP3K7IP2/TAB2, forms a ternary complex with the protein kinase MAP3K7/TAK1 and either TRAF2 or TRAF6 in response to stimulation with the pro-inflammatory cytokines TNF or IL-1. Subsequent MAP3K7/TAK1 kinase activity triggers a signaling cascade leading to activation of the NF-kappaB transcription factor. The human genome contains a related pseudogene. Alternatively spliced transcript variants have been described, but their biological validity has not been determined.
Subcellular location: Cytoplasm, Cell membrane, Extracellular matrix
Synonyms: MAP3K7IP 3, Mitogen activated protein kinase kinase kinase 7 interacting protein 3, Mitogen-activated protein kinase kinase kinase 7-interacting protein 3, NAP1, NF kappa B activating protein 1, NF-kappa-B-activating protein 1, NFkB activating protein 1, TAB-3, TAB3, TAB3_HUMAN, TAK1 binding protein 3, TAK1-binding protein 3, TGF-beta-activated kinase 1 and MAP3K7-binding protein 3, TGF-beta-activated kinase 1-binding protein 3.
Target Information: The protein encoded by this gene was identified as a regulator of the MAP kinase kinase kinase MAP3K7/TAK1, which is known to mediate various intracellular signaling pathways, such as those induced by TGF beta, interleukin 1, and WNT-1. This protein interacts and thus activates TAK1 kinase. It has been shown that the C-terminal portion of this protein is sufficient for binding and activation of TAK1, while a portion of the N-terminus acts as a dominant-negative inhibitor of TGF beta, suggesting that this protein may function as a mediator between TGF beta receptors and TAK1. This protein can also interact with and activate the mitogen-activated protein kinase 14 (MAPK14/p38alpha), and thus represents an alternative activation pathway, in addition to the MAPKK pathways, which contributes to the biological responses of MAPK14 to various stimuli. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]