G Ratio of 14C-Lys and 35S-Met labelled immunoprecipitated MT-CO1 proteins. In-vitro translation using MT-CO1-TGA mRNA, MT-CO1-AGA mRNA, and mutant A1555G mitohybrid ribosomes in the presence of tobramycin (0 - 20 µM). The corresponding MT-CO1 band was quantified by autoradiography. 