Vdac1 is a voltage dependent anion channel that also preferentially transports divalent calcium ions when Vdac1 is in its closed state (Gincel et al. 2001, Bathori et al. 2006, Tan and Colombini et al. 2007, Ben-Hail and Shoshan-Barmatz 2014).
calcium channel activity of Vdac1 [mitochondrial outer membrane]