According to the X-ray structure analysis (Kurisu et al, 2003; Stroebel et al, 2003), one chlorophyll a (Chl a ) molecule is bound between helices F and G of subunit IV of this complex.

• 莱茵衣藻和嗜热蓝细菌的Cyt b6f三维晶体结构均显示,每Cyt b6f单体分子含有1分子Chlorophyll a (Chl a ),充分肯定了Chl a是Cyt b6f天然成分的观点(Kurisu et al,2003;Stroebel et al,2003)。