Figure 5 - full size

 

Figure 5.
Figure 5 Stereo representation of the electron transfer pathways in the ba[3]-cytochrome c oxidase from T.thermophilus. The haems b and a[s3] are shown in orange, the copper atoms in blue and the metal-ligating amino acid residues in green. The two arginine residues (Arg450 and Arg449) and Phe385, which are involved in the electron transfer from Cu[A] via haem b to the active site haem a[s3] Cu[B] are depicted in purple. The residues that form the newly postulated electron transfer pathway leading from Cu[A] to the aromatic ring system of Tyr136 and from there via a hydrogen bond and Trp229 to the Cu[B] ligand His238 are represented in cyan, including the corresponding distances. This figure was prepared with MAIN (Turk, 1992).

The above figure is reprinted from an Open Access publication published by Macmillan Publishers Ltd: EMBO J (2000, 19, 1766-1776) copyright 2000.