The authors are retracting the following paper: Lin, S.H., Cherian, N., Wu, B., Phee, H., Cho, C. and Colombini M. (2014) Bax channel triplet: co-operativity and voltage gating. Biochemical Journal 459: 397–404. Further research has demonstrated that the remarkable properties of the channel-former presented in this paper are indeed correct, but the channel-former is not the human Bax protein. That protein was expressed in E. coli and purified following the published procedures cited in the paper but the channel-forming activity is due to substances produced by E. coli. Ongoing research seeks to identify the channel-forming entity.