Ubiquinol-cytochrome-c reductase complex assembly factor 3 (Uqcc3)

Required for the assembly of the ubiquinol-cytochrome c reductase complex (mitochondrial respiratory chain complex III or cytochrome b-c1 complex), mediating cytochrome b recruitment and probably stabilization within the complex. Thereby, plays an significant role in ATP production by mitochondria.

Cardiolipin- binding protein, it may also control the cardiolipin composition of mitochondria membranes and their morphology. .