FEATURES

DESCRIPTION

Also known as TAB3_MOUSE, Tab3, Kiaa4135, Map3k7ip3. Adapter required to activate the JNK and NF-kappa-B signaling pathways through the specific recognition of 'Lys-63'-linked polyubiquitin chains by its RanBP2-type zinc finger (NZF). Acts as an adapter linking MAP3K7/TAK1 and TRAF6 to 'Lys-63'-linked polyubiquitin chains. The RanBP2-type zinc finger (NZF) specifically recognizes Lys-63'-linked polyubiquitin chains unanchored or anchored to the substrate proteins such as RIPK1/RIP1: this acts as a scaffold to organize a large signaling complex to promote autophosphorylation of MAP3K7/TAK1, and subsequent activation of I-kappa-B-kinase (IKK) core complex by MAP3K7/TAK1. Interacts with TAB1, TAB2, MAP3K7, TRAF2 and TRAF6. The minimal TAB3-containing complex (TAB1-MAP3K7-TAB3) appears not to contain TAB2. However, it seems sensible to consider that TAB2 may also join this complex and may act in a cooperative manner with TAB3. Interacts with DYNC2I2 (via the WD domains). Interacts with RBCK1. Binds 'Lys-63'-linked polyubiquitin chains. Interacts with TRIM5.

EXTERNAL LINKS

Tab3

TGF-beta-activated kinase 1 and MAP3K7-binding protein 3

Tab3

Molecular Synopsis