Figure 2 - full size

Figure 2.
Figure 2. Stereo view of the PCMH heterotetramer as a ribbon drawing. The two flavoprotein subunits are in light and dark green, and the two cytochrome subunits are in red and yellow. The heme prosthetic groups are in red and the FAD groups are in gold. The molecular 2-fold axis is horizontal. Figure prepared using Ribbons [Carson 1997].