Figure 5

B-factors and structural flexibility of subunit C. A stereo view of the B-factor variations of subunit C (C-chain) is presented. The heme is shown as magenta sticks. The bound menaquinol molecule (MK) and Tyr-C63 are shown as yellow and blue sticks, respectively. The flexible region (a.a. 57–68) between helices 2 and 3 is indicated with a black arrow.