Figure 1. Morphology of magnetite crystals expressed in recombinants carrying partially deleted or point mutated Mms6 proteins developed by homologous recombination or complementation of partially deleted Mms6 protein.

(A) Overview of partial deletion or mutation constructs. The numbers indicate the number of the amino acid residue. The black and white boxes denote the acidic amino acid and lysine residues, respectively. The dashed lines represent the deleted region in Mms6 variants. (B) Transmission electron micrographs of magnetite crystals from wild-type, mms6Δ123–133, mms6Δ113–133, mms6K, mms6Δ83–93, mms6Δ94–112, mms6Δ94–133, mms6Δ83–133, Δmms6, Δmms6 carrying pRKmms6-wt, pRKmms6Δ113–133, pRKmms6K, and pRKmms6Δ83–93 strains. Scale bar, 100 nm.