It contains 16,569 base pairs of DNA organized in a closed circle.
- 2 ribosomal RNA (rRNA) molecules
- 22 transfer RNA (tRNA) molecules (shown in the figure as yellow bars; two of them labeled)
- 13 polypeptides.
The 13 polypeptides participate in building several protein complexes embedded in the inner mitochondrial membrane.
- 7 subunits that make up the mitochondrial NADH dehydrogenase
- 3 subunits of cytochrome c oxidase
- 2 subunits of ATP synthase cytochrome b