| Txonomy | Homo , Homininae , Hominidae , Hominoidea , Catarrhini , Simiiformes , Haplorrhini , Primates , Euarchontoglires, Boreoeutheria , Eutheria , Theria , Mammalia , Amniota , Tetrapoda , Dipnotetrapodomorpha , Sarcopterygii, Euteleostomi , Teleostomi , Gnathostomata , Vertebrata , Craniata , Chordata , Deuterostomia , Bilateria , Eumetazoa , Metazoa, Opisthokonta , Eukaryota , cellular organisms |
| Function | Receptor for prostaglandin D2 (PGD2). Coupled to the G(i)-protein. Receptor activation may result in pertussis toxin-sensitive decreases in cAMP levels and Ca(2+) mobilization. PI3K signaling is also implicated in mediating PTGDR2 effects. PGD2 induced receptor internalization. CRTH2 internalization can be regulated by diverse kinases such as, PKC, PKA, GRK2, GPRK5/GRK5 and GRK6. Receptor activation is responsible, at least in part, in immune regulation and allergic/inflammation responses. |