(A) Top left: model of iGluR domain organization. Bottom left and right: table of Drosophila iGluRs and IRs, with corresponding cytological location and gene names.
(B) Phylogenetic tree of Drosophila and human iGluRs and Drosophila IRs, color-coded as in (A).
(C) Alignments of the amino acid sequences of Drosophila and human iGluRs and Drosophila IRs of part of the pore loop, P, and M2 transmembrane segment of the ion channel domain.