bfl-1, a bcl-2 homologue, suppresses p53-induced apoptosis and exhibits potent cooperative transforming activity.
The bcl-2 family of genes code for proteins that contain anti-apoptotic or pro-apoptotic activity. The human bfl-1 gene contains an open reading frame for a 175-amino acid Bcl-2 family protein. Among the various Bcl-2 family members, the Bfl-1 protein shares the highest homology with the mouse A1 protein. These two proteins share three conserved domains, Bcl homology (BH)1, BH2, and BH3, with other Bcl-2 family proteins. Unlike other Bcl-2 family members, Bfl-1 contains a GIn-rich NH2-terminal region and lacks an NH ( 19K homology) domain 1. We demonstrate that the Bfl-1 protein suppresses apoptosis induced by the p53 tumor suppressor protein in a manner similar to other Bcl-2 family members such as Bcl-2, Bcl-xL and EBV-BHRF1. In addition, the bfl-I gene cooperates efficiently with the Ela oncogene in transformation of primary rodent epithelial cells. Our results suggest that the human bfl-1 gene may play an important role in carcinogenesis.[1]References
- bfl-1, a bcl-2 homologue, suppresses p53-induced apoptosis and exhibits potent cooperative transforming activity. D'Sa-Eipper, C., Subramanian, T., Chinnadurai, G. Cancer Res. (1996) [Pubmed]
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