Figure 1.

Gene conservation of G protein components and plant GPCR candidates. Genes homologous to Gα, Gβ, Gγ, and plant GPCR candidates were identified as mentioned in Supplemental Materials and Methods S1. The Pfam domain was determined using Arabidopsis genes shown on the left of the table. Color dots indicate gene conservation. Phylogenetic trees for GPCR candidates are available in Supplemental Materials and Methods S1. *WD40 (PF00400) contains Gβ and other proteins possessing WD40 repeats. **Picea sitchensis XLG is currently not registered in the National Center for Biotechnology Information database but found in EST data for Picea glauca. [See online article for color version of this figure.]