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VDAC1, also named as VDAC, Porin 31HM, Porin 31HL and Plasmalemmal porin, belongs to the eukaryotic mitochondrial porin family. It adopts an open conformation at low or zero membrane potential and a closed conformation at potentials above 30-40 mV, to form a channel through the mitochondrial outer membrane and also the plasma membrane. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion. It is a 31kd membrane protein conserved in chimpanzee, dog, cow, mouse, rat, chicken, and zebrafish. This antibody is specific to VDAC1.