G-protein coupled receptor (PubMed:27072655). Has been shown to bind the neuroprotective and glioprotective factor prosaposin (PSAP), leading to endocytosis followed by an ERK phosphorylation cascade (By similarity). However, other studies have shown that prosaposin does not increase activity (By similarity). It has been suggested that GPR37L1 is a constitutively active receptor which signals through the guanine nucleotide-binding protein G(s) subunit alpha (By similarity). Participates in the regulation of postnatal cerebellar development by modulating the Shh pathway (PubMed:24062445). Regulates baseline blood pressure in females and protects against cardiovascular stress in males (PubMed:29625592). Mediates inhibition of astrocyte glutamate transporters and reduction in neuronal N-methyl-D-aspartate receptor activity (PubMed:28795439). Interacts with the PTCH1 receptor. Associates with the basal membrane of Bergmann glia cell primary cilia. Highly expressed in brain but not in heart or kidney (at protein level) (PubMed:29625592). In the brain, highly expressed in cerebellar Bergmann glia (at protein level) (PubMed:24062445, PubMed:29625592). Detected in the hippocampus but not in the brain stem or neocortex (at protein level) (PubMed:29625592). In several key cardiovascular centers of the central nervous system including the caudal and rostral ventrolateral medulla, the nucleus of the solitary tract, and the A5 nucleus, detected close to, but not within, tyrosine hydroxylase-positive catecholaminergic neurons (at protein level) (PubMed:29625592). Expressed in astrocytes in both gray and white matter and is also detected throughout the brain in some oligodendrocyte precursors (PubMed:28795439). At postnatal day 1, not detectable in any brain area examined but at postnatal day 8, strongly expressed in both astrocytes and oligodendrocyte precursors (OPs). At postnatal day 15 and during adulthood, expression in astrocytes and OPs remains at high levels. The N-terminal region is required for constitutive signal transduction. Undergoes metalloprotease-mediated cleavage which reduces its constitutive activity. Ubiquitinated. Premature down-regulation of proliferation of cerebellar granule neuron precursors in postnatal mice, precocious maturation of Bergmann glia and Purkinje neurons, precocious juvenile motor abilities, and improved adult motor learning and coordination (PubMed:24062445). Early activation of the Shh pathway with increased levels of Shh, Smo and Ptch1 earlier in postnatal development than in wild-type mice (PubMed:24062445). Increased aortic diastolic, mean arterial and pulse pressures in females but not in males (PubMed:29625592). Males develop exacerbated left ventricular hypertrophy and evidence of heart failure when challenged with short-term angiotensin-2 infusion while females are protected from cardiac fibrosis (PubMed:29625592). Increased susceptibility to induced seizures (PubMed:28688853). Reduced signaling in the cerebellum as indicated by significantly less cAMP production (PubMed:27072655). No effect on the input resistance or resting potential of astrocytes or neurons (PubMed:28795439). Neuronal death is increased by 40% in an in vitro model of ischemia (PubMed:28795439). Belongs to the G-protein coupled receptor 1 family. Has been reported to act as a receptor for prosaposin (PSAP). However, it has also been shown that prosaposin does not increase activity. It has been suggested that GPR37L1 is a constitutively active receptor.