sequence Alignment. Multi sequence alignment of H. elongata NhaD and NhaD type antiporters of other γ-proteo bacteria. Hal_elon Halomonas elongata, Alkal_am Alkalimonas amylolytica, Idiom_lo Idiomarina loihiensis, Shewa_on Shewanella oneidensis, Photo_pr Photobacterium profundum, Vibr_ch Vibrio cholerae, Vibr_par Vibrio parahaemolyticus. Alignment was done with the MULTALIN  sequence tool. Spans with high homology (at least six of the seven organisms show the same residue) are given in black, spans with low or no homology in gray. Similar residues are noted in the consensus sequence as follows: ! is I, V; $ is L, M; % is F, Y; # any one of N, D, Q, E, B, Z. Underlined residues in the H. elongata sequence are probably not expressed in vivo and are not expressed in the reconstitution experiments.