A. Crystal size distribution of ΔR9ΔmamE complemented with wildtype, protease inactive (mamEP), and heme-binding deficient mamE (mamEC2). Crystal size is plotted as the percent of the total number of crystals that fall into each 5nm bin. n>500 crystals were measured for each strain from two independent ΔR9ΔmamE/mamE, three independent ΔR9ΔmamE/mamEP, and four independent ΔR9ΔmamE/mamEC2 cultures.
B. Representative TEM images of crystals for each of the three complemented strains. >100 fields were visualized by TEM from >5 independent cultures.