Molecular Murder Mysteries

Cytochrome C oxidase is a molecule that none of us air-breathing creatures can live without. It's also really interesting. This protein complex is a dimer of two smaller complexes. Each of the smaller complexes contains 13 different proteins and two heme groups.

Oxidized Cytochrome C Oxidase. Each protein chain is colored differently.
Arrows point to the active site in subunit I.

The two heme groups are both part of the cytochrome c oxidase subunit I protein. The DNA sequence of this protein is used for many types of DNA barcoding.

The two heme groups in Cytochrome C ... Read more

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