Background:
Protein BTG2, the anti-proliferative human homolog of murine Pc3/Tis21, belongs to the BTG/Tob family. This family has structurally related proteins that appear to have anti-proliferative properties. It has been demonstrated that BTG2 is p53-inducible and is involved in cell cycle control and cellular response to DNA damage (PMID: 8944033). As a transcriptional co-regulator, BTG2 has been shown to interact with CAF1 and POP2, and works as a co-activator of ERa-mediated transcription via a CCR4-like complex (PMID: 18974182).