HHP4 (heptahelical protein 4); receptor. similar to HHP5 (heptahelical protein 5), receptor [Arabidopsis thaliana] (TAIR:AT4G38320.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO63551.1); contains InterPro domain Hly-III related proteins; (InterPro:IPR004254)