Fig. 1.

Overall structure of Cyt b₅₆₁. (A) Overall structure of WT, full-length Cyt b₅₆₁. The structure of Cyt b₅₆₁ is shown in three successive views. There are two molecules of Cyt b₅₆₁ in each asymmetrical unit, named Mol A (green) and Mol B (blue). (B) Surface features of the Cyt b₅₆₁ homodimer by electrostatic potential. The three views shown correspond to those in A. Two cavities on either side are surrounded by positively charged amino acids. All structural figures were prepared using PyMOL Molecular Graphics System, Version 1.5 (Schrödinger, LLC).