Entrez Summary: The protein encoded by this gene is a G-protein coupled receptor involved in the regulation of feeding behavior. The encoded protein binds the hypothalamic neuropeptides orexin A and orexin B. A related gene (HCRTR1) encodes a G-protein coupled receptor that selectively binds orexin A. [provided by RefSeq, Jan 2009].
UniProt Summary: Nonselective, high-affinity receptor for both orexin-A and orexin-B neuropeptides (PubMed:9491897, PubMed:26950369). Triggers an increase in cytoplasmic Ca(2+) levels in response to orexin-A binding (PubMed:9491897, PubMed:26950369). {ECO:0000269|PubMed:26950369, ECO:0000269|PubMed:9491897}.
Pfam DomainsGO Terms
Pfam Domains
7tm 1
Orexin rec2
GO Terms
orexin receptor activity
regulation of circadian sleep/wake cycle, wakefulness
circadian sleep/wake cycle process
circadian sleep/wake cycle
neuropeptide receptor activity
regulation of circadian sleep/wake cycle
circadian behavior
rhythmic behavior
peptide hormone binding
regulation of behavior
feeding behavior
phospholipase C-activating G protein-coupled receptor signaling pathway
neuropeptide signaling pathway
regulation of circadian rhythm
circadian rhythm
rhythmic process
regulation of cytosolic calcium ion concentration
chemical synaptic transmission
anterograde trans-synaptic signaling
cellular calcium ion homeostasis
trans-synaptic signaling
calcium ion homeostasis
synaptic signaling
cellular divalent inorganic cation homeostasis
divalent inorganic cation homeostasis
cellular metal ion homeostasis
behavior
metal ion homeostasis
cellular cation homeostasis
cellular ion homeostasis
cation homeostasis
inorganic ion homeostasis
G protein-coupled receptor activity
cellular chemical homeostasis
ion homeostasis
cellular homeostasis
chemical homeostasis
cell-cell signaling
G protein-coupled receptor signaling pathway
integral component of plasma membrane
homeostatic process
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)