GPR98: Receptor that may have an important role in the development of the central nervous system. Defects in GPR98 are the cause of Usher syndrome type 2C (USH2C). USH is a genetically heterogeneous condition characterized by the association of retinitis pigmentosa with sensorineural deafness. Age at onset and differences in auditory and vestibular function distinguish Usher syndrome type 1 (USH1), Usher syndrome type 2 (USH2) and Usher syndrome type 3 (USH3). USH2 is characterized by congenital mild hearing impairment with normal vestibular responses. Defects in GPR98 may be a cause of familial febrile convulsions type 4 (FEB4); also known as familial febrile seizures 4. Febrile convulsions are seizures associated with febrile episodes in childhood without any evidence of intracranial infection or defined pathologic or traumatic cause. It is a common condition, affecting 2-5% of children aged 3 months to 5 years. The majority are simple febrile seizures (generally defined as generalized onset, single seizures with a duration of less than 30 minutes). Complex febrile seizures are characterized by focal onset, duration greater than 30 minutes, and/or more than one seizure in a 24 hour period. The likelihood of developing epilepsy following simple febrile seizures is low. Complex febrile seizures are associated with a moderately increased incidence of epilepsy. Belongs to the G-protein coupled receptor 2 family. LN-TM7 subfamily. 4 isoforms of the human protein are produced by alternative splicing.
Protein type: Membrane protein, multi-pass; Membrane protein, integral; Receptor, GPCR; GPCR, family 2
Chromosomal Location of Human Ortholog: 5q13
Cellular Component: cell surface; membrane; perinuclear region of cytoplasm; cytoplasm; integral to membrane; receptor complex
Molecular Function: G-protein coupled receptor activity; protein binding; myosin binding; calcium ion binding
Biological Process: G-protein coupled receptor protein signaling pathway; nervous system development; inner ear receptor stereocilium organization and biogenesis; cell-cell adhesion; sensory perception of sound; visual perception; sensory perception of light stimulus; photoreceptor cell maintenance; detection of mechanical stimulus involved in sensory perception of sound; maintenance of organ identity; neurological system process
Disease: Febrile Seizures, Familial, 4; Usher Syndrome, Type Iic
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