Figure 6.

Comparison of the D. phosphitoxidans ’ two gamma subunits of the F ₁ F ₀ ATPases with the gamma subunits of Na ⁺ , and H ⁺ -translocating ATPases. NCBI protein database accession numbers used: Escherichia coli (P68699), Vibrio cholerae (AAF95908), Vibrio alginolyticus (POA308), Bacillus subtilis (P37815), Acetobacterium woodii, C1 subunit (AFA47025.1) and C3 subunit (AFA47026.1), Propionigenium modestum (P21905), Ilyobacter tartaricus (Q8KRV3), D. phosphitoxidans (Dpo_2c00260), and (Dpo_4c00410). Arrow marks show the positions of the conserved amino acids for sodium ion binding. D. phosphitoxidans gamma subunit Dpo_2c00260 shows a non-conserved substitution at position 47 (glutamic acid instead of a glutamine), and a substitution at position 78 (methionine), whereas the Dpo_4c00410, differs in one amino acid, at position 78 (leucine), which is conserved amongst H⁺-translocating ATPases.