Anti-Tumor Necrosis Factor alpha-Induced Protein 3 (TNF alpha-Induced Protein 3, TNFAIP3, A20, MGC10

A20, also referred to as TNF-a-induced protein 3 (TNFAIP3), is cytokine-inducible protein that functions to inhibit apoptosis and activate NF-kB. It was first identified as a TNF-a inducible primary response gene in human umbilical vein endothelial cells, and encodes a 790-amino acid protein containing seven Cys2/Cys2-zinc finger motifs. Constitutive expression of A20 is observed in lymphoid tissues, but it is transiently expressed in a variety of cell types in response to inflammatory signals such as TNF-a, IL-1, phorbol esters, and LPS. Expression of A20 can confer resistance to apoptosis and NF-kB activation triggered by these signals, probably through interference with TRAF (TNF receptor associated factor) family members, and interaction with the NF-kB inhibiting protein ABIN. Studies also show that A20 contains site-specific ubiquitin modifying activity that can contribute to its biological functions. The aminoterminus of A20 contains de-ubiquitinating (DUB) activity for Lys63 branches, such as those found in TRAF6 and RIP, while the carboxyl-terminus contains ubiquitin ligase (E3) activity for Lys48 branches of the same substrates and leads to their degradation. Applications: Suitable for use in Western Blot and Immunoprecipitation. Other applications not tested. Recommended Dilutions: Western Blot: 1:1000, Incubate membrane with diluted antibody in 5% BSA, 1X TBS, 0.1% Tween-20 at 4°C with gentle shaking, overnight., Immunoprecipitation: 1:100, Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.