Tumor necrosis factor alpha-induced protein 1 (TNFAIP1)

Tumor necrosis factor alpha-induced protein 1 (TNFAIP1) is a BTB/POZ domain-containing adapter protein that functions as a substrate-specific adapter within a BCR (BTB-CUL3-RBX1) E3 ubiquitin-protein ligase complex, particularly mediating the ubiquitination and proteasomal degradation of RhoA, a small GTPase involved in cytoskeletal dynamics and cell migration[2][6]. TNFAIP1 is inducible by tumor necrosis factor alpha (TNF-α), has regulatory roles in cytoskeleton maintenance, cell migration, DNA synthesis, and DNA repair through interaction with PCNA and DNA polymerase delta. TNFAIP1 is implicated in cancer biology, being overexpressed in several cancer types and associated with adverse prognosis, notably in lung cancer. It may play roles in other conditions, such as neurodevelopmental disorders, but current data primarily support its importance in cellular homeostasis and cancer progression[1][2][6].

Other names

BTB/POZ domain-containing adapter for CUL3-mediated RhoA degradation protein 2BACURD2EDP1hBACURD2B61B12MGC2317BTBD34BTB/POZ domain-containing protein TNFAIP1Protein B12Tumor necrosis factor, alpha-induced protein 1 (endothelial)Tumor necrosis factor, alpha induced protein 1

For drugs targeting upstream regulatory pathways (not TNFAIP1 itself): Inhibition of neddylation leads to accumulation of TNFAIP1 by preventing its degradation via the ubiquitin-proteasome system[1].