sentence: In addition to hVDAC3 , mouse VDAC3 was expressed in E. coli and isolated from inclusion bodies ( designated as mVDAC3 ) , and human VDAC3 and VDAC1 were expressed and isolated from mitochondria of the yeast strain deficient of its endogenous VDAC1 ( Δ por1 ; designated as h VDAC3 and h VDAC1 ) .