HHP1 (HEPTAHELICAL TRANSMEMBRANE PROTEIN1). similar to HHP3 (heptahelical protein 3), receptor [Arabidopsis thaliana] (TAIR:AT2G24150.1); similar to HHP2 (HEPTAHELICAL TRANSMEMBRANE PROTEIN2) [Arabidopsis thaliana] (TAIR:AT4G30850.1); similar to HHP2 (HEPTAHELICAL TRANSMEMBRANE PROTEIN2) [Arabidopsis thaliana] (TAIR:AT4G30850.2); similar to Hly-III related proteins [Medicago truncatula] (GB:ABP03876.1); contains InterPro domain Hly-III related proteins; (InterPro:IPR004254)