(A) Shows the sequence alignment of E. coli with the FtsE sequence from Acinetobacter baumannii MacB (Ab_MacB), Aggregatibacter actinomycetemcomitans MacB (Aa_MacB), Geobacillus stearothermophilus ArtP (Gs_ArtP), and E. coli methionine importer (Ec_MetNI). (B) The structure of FtsE_Ec, showing all the conserved motifs within the structure (Red: Walker-A, Blue: Walker-B, Pink: Q-loop, Green: D-loop, Purple: H-loop, and Cyan: the signature motif). (C) The distribution of hydrophobic residues across the FtsE surface (regions colored in White, represents the hydrophobic residues). (D) SDS/PAGE image showing the thermal stability of the recombinant FtsE: P, pellet; S, supernatant.