Fig. 2.

A summary of key points of physical interaction of products of the mt genome (red) and the nuclear genome (blue), all of which occur on or within the inner mt membrane. Interactions of animal mt and N-mt genomes concern protein subunits of the electron transport system in complexes I, III, IV, and V (a) as well as interactions in the transcriptional (b) and translational (c, d) mechanisms needed to produce electron transport system proteins. There are two distinct mitonuclear interactions involved in translation.