Figure 3.

The chemical environment of the putative MB' platform. (A) The transition from the LpCopA E2.P_i structure to the average protein structure representing >150 ns simulation is indicated by the arrow. Isodensity surfaces at 5% occupancy mark the average positions of lipid phosphates and carbonyl oxygens. (B) The number of interactions between Lys135, Arg136, Lys142 and, in turn, lipid phosphates, carbonyl oxygens and water molecules, from the three E2.P_i simulations. (C) Relative in vitro (first columns) and in vivo (second columns) activities of LpCopA MB' mutants as compared to wild-type (WT) protein and the inactive Asp426Asn mutant. To see this figure in color, go online.