May be a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain. This protein may mediate formation of the complex between cytochromes c and c1. . This is the function of UQCRHL (ubiquinol-cytochrome c reductase hinge protein like, Ensembl gene identifier ENSG00000233954).