| Complex I: membrane subunits
The E. coli enzyme has 63 transmembrane alpha-helices, of which 55 are shown here. Several are bent, and 6 are discontinuous, or broken. (examples in red)
Structure of the membrane domain of respiratory complex I. Efremov, R.G., Sazanov, L.A., (2011) Nature 476: 414-420 (PubMed) 3rko (PDB) |