6.1.1.6 lysine-tRNA ligase A-9 cell - 6.2.1.45 E1 ubiquitin-activating enzyme A-9 cell - 7.1.1.2 NADH:ubiquinone reductase (H+-translocating) A-9 cell - 7.1.1.9 cytochrome-c oxidase A-9 cell -