Q99K90: TGF-beta-activated kinase 1 and MAP3K7-binding protein 2 (Tab2)

TGF-beta-activated kinase 1 and MAP3K7-binding protein 2 (Tab2) is a 693-residue protein from Mus musculus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q99K90.

Gene
Tab2
Organism
Mus musculus
Length
693 residues
Mean pLDDT
52.4
Model
AF-Q99K90-F1 v6
Model created
1 Aug 2025
PDB structures
2

Explore in 3D Color by confidence AlphaFold DB UniProt

Model confidence (pLDDT)

The mean pLDDT of this model is 52.4 (low overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.

pLDDT bandMeaningShare of residues
Above 90Very high: backbone and side chains are usually accurate14%
70 to 90Confident: backbone generally right10%
50 to 70Low: treat with caution9%
Below 50Very low: often disordered regions67%

What pLDDT means and how to read it

Function

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) (By similarity). Acts as an adapter linking MAP3K7/TAK1 and TRAF6 to 'Lys-63'-linked polyubiquitin chains (By similarity). The RanBP2-type zinc finger (NZF) specifically recognizes 'Lys-63'-linked polyubiquitin chains unanchored or anchored to the substrate proteins such as RIPK1/RIP1 and RIPK2: 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 (PubMed:19927120). Also…

Subunit structure

Interacts with MAP3K7 and TRAF6. Identified in the TRIKA2 complex composed of MAP3K7, TAB1 and TAB2. Binds 'Lys-63'-linked polyubiquitin chains (By similarity). Interacts with NCOR1 and HDAC3 to form a ternary complex (PubMed:12150997). Interacts (via C-terminal) with NUMBL (via PTB domain). Interacts (via the C-terminus) with DYNC2I2 (via WD domains). Interacts with RBCK1. Interacts with TRIM5…

Subcellular location

Membrane, Endosome membrane, Lysosome membrane, Cytoplasm, cytosol, Nucleus

Experimental structures in the PDB

Compare the prediction with experimentally determined structures of the same protein:

PDB IDMethodResolutionChains and residues
3A9JX-ray1.18 ÅC=665-693
7E62X-ray1.99 ÅC/J=644-693

More AlphaFold highlights

About this viewer

MolViewer loads the AlphaFold model straight from AlphaFold DB into your browser. Show it as a cartoon, color by pLDDT, measure distances and angles, and load a PDB structure next to it to compare.