Alignment of the encoded amino acids of representative chemoreceptors. Single and double representatives of each of the small and largestr subfamilies, and three representatives of the stlfamily are shown, with the subfamily/family designations indicated at the beginning and end of the sequences. The seven TM domains are indicated above the alignments following Sengupta et al. (1996) for ODR-10 (C53B7.5). The alignments readily divide into blocks corresponding to these domains, with length variants between them. The conserved amino acid positions used to anchor the alignments are highlighted in bold, and shown on the line between the str andstl families, as are the inferred ancestral intron positions.
