Figure 2 The A. maxima cytochrome c6 24-molecule cluster, viewed down the (a) threefold and (b) pseudo-fourfold axis. In (b) the side chains of Met19 which flank the pore are shown. This figure and Figs. 3 and 5(a) were drawn with RIBBONS (Carson, 1997).

© International Union of Crystallography 2002