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Glycine receptors (GlyRs) are the major mediators of fast synaptic inhibition in the adult human spinal cord and brain stem. Hereditary mutations to GlyRs can lead to the rare, but potentially fatal neuromotor disorder, hyperekplexia. Most mutations located in the large intracellular domain (TM3-4
Missense mutations as well as a null allele of the human glycine receptor alpha1 subunit gene GLRA1 result in the neurological disorder hyperekplexia [startle disease, stiff baby syndrome, Mendelian Inheritance in Man (MIM) #149400]. In a pedigree showing dominant transmission of hyperekplexia, we
Glycine transporter 2 (GlyT2) mutations across the entire sequence have been shown to represent the presynaptic component of the neurological disease hyperekplexia. Dominant, recessive and compound heterozygous mutations have been identified, most of them leading to impaired glycine uptake. Here, we
Hyperekplexia, an inherited neuronal disorder characterized by exaggerated startle responses with unexpected sensory stimuli, is caused by dysfunction of glycinergic inhibitory transmission. From analysis of newly identified human hyperekplexia mutations in the glycine receptor (GlyR) α1 subunit, we