Entrez Summary: The protein encoded by this gene functions as a regulator of G protein-coupled receptor signaling in phototransduction. Studies in bovine and mouse show that this gene is expressed only in the retina, and is localized in the rod outer segment membranes. This protein is associated with a heterotetrameric complex, specifically interacting with the regulator of G-protein signaling 9, and appears to function as the membrane anchor for the other largely soluble interacting partners. Mutations in this gene are associated with prolonged electroretinal response suppression (PERRS), also known as bradyopsia. [provided by RefSeq, Mar 2010].
UniProt Summary: Regulator of G protein-coupled receptor (GPCR) signaling in phototransduction. Participates in the recovery phase of visual transduction via its interaction with RGS9-1 isoform. Acts as a membrane-anchor that mediates the targeting of RGS9-1 to the photoreceptor outer segment, where phototransduction takes place. Enhances the ability of RGS9-1 to stimulate G protein GTPase activity, allowing the visual signal to be terminated on the physiologically time scale. It also controls the proteolytic stability of RGS9-1, probably by protecting it from degradation (By similarity). {ECO:0000250}.
Pfam DomainsGO Terms
Pfam Domains
No Pfam Domain information is available for this gene.
GO Terms
detection of light stimulus involved in sensory perception
detection of light stimulus involved in visual perception
detection of visible light
photoreceptor outer segment
detection of light stimulus
detection of external stimulus
detection of abiotic stimulus
visual perception
sensory perception of light stimulus
response to light stimulus
response to radiation
detection of stimulus involved in sensory perception
detection of stimulus
sensory perception
response to abiotic stimulus
negative regulation of signal transduction
negative regulation of cell communication
negative regulation of signaling
nervous system process
negative regulation of response to stimulus
system process
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)