Figure 3 - full size

Figure 3.
Fig. 3. (a) A crystal of the cyt b[6]f complex from the cyanobacterium M. laminosus. The brownish nature relative to crystals of the cyt bc[1] complex (30-33) is derived from one molecule of chlorophyll a (18, 29) in the complex. (b) Difference spectra of cyt f (ascorbate minus ferricyanide) and cyt b[6] (dithionite minus ascorbate) in the cyt complex obtained from crystals.