Putative TMSs 1–4 of an RnsC homologue (gi31544792) (top) aligned with putative TMSs 1–4 of the six TMS MalG homologue (gi116512192) (bottom). The comparison shown was 12.7 S.D. (45% similarity and 22.5% identity). The numbers at the beginning of each line refer to the residue numbers in each of the proteins. TMSs are indicated in red lettering. Vertical lines indicate identities; colons indicate close similarities, and periods indicate more distant similarities.