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For Research Use Only. Not For Clinical Use.
Intracellular
Group enriched (Ductal cells, Pancreatic endocrine cells, Exocrine glandular cells, monocytes)
Not detected in immune cells
Group enriched (Hep G2, RT4)
Interacts directly with the 26S proteasome. The interaction with NUB1 via the N-terminal ubiquitin domain facilitates the linking of UBD-conjugated target protein to the proteasome complex and accelerates its own degradation and that of its conjugates. Interacts (via ubiquitin-like 1 domain) with the spindle checkpoint protein MAD2L1 during mitosis. Present in aggresomes of proteasome inhibited cells. Interacts with HDAC6 under proteasome impairment conditions. Forms a thioester with UBA6 in cells stimulated with tumor necrosis factor-alpha (TNFa) and interferon-gamma (IFNg). Interacts with SQSTM1 and TP53/p53 (PubMed:25422469).