Figure 2
(a) First cryo-EM MAC structure (EMDB entry EMD-3134, 8.5 Å; Serna et al., 2016 ). (b) Cryo-EM structures of open (EMDB entry EMD-0106, 5.6 Å, top; Menny et al., 2018 ) and closed conformations (EMDB entry EMD-0107, 5.6 Å, bottom; Menny et al., 2018 ) of the MAC pore. (c) Atomic model of the MAC closed conformation (PDB entry 6h04; Menny et al., 2018 ). Complement proteins coloured as in Fig. 1 . (d) Coulombic electrostatic potential ranging from −10 (red) to 10 (blue) kcal (mol·e)−1 calculated from the model shown in (c). The position of the membrane relative to the models is indicated by double black lines. The boxed region highlights a patch of positively charged residues within the membrane-interacting regions of C6, C7 and C8. |