HTATIP2/TIP30 Antibody #14614

The HIV-1 Tat interactive protein 2 (HTATIP2, TIP30, CC3) is an oxidoreductase that was originally identified as a metastatic tumor suppressor and Tat-mediated proapoptotic gene transcription cofactor (1,2). HTATIP2 protein contains a short-chain dehydrogenase (SDR) domain and a NADPH binding motif important for HTATIP2 interaction with importins and inhibition of nucleocytoplasmic transport (3,4). Research studies demonstrate that induced overexpression of HTATIP2 predisposes cells to apoptosis by inhibiting the nuclear transport of important signaling proteins (e.g. p53, activated notch1) and several key targets of the DNA repair process (5-7). HTATIP2 is part of a protein complex, with Rab5a, endophilin B1, and ACSL4, that may regulate EGFR receptor endosomal trafficking, degradation, and cytoplasmic/nuclear signaling (8,9). Silencing of HTATIP2 promotes tumor cell survival under low glucose conditions by inducing increased expression of mitochondrial respiratory proteins and glucose metabolic enzymes (10).