RAPSN Antibody – Goat Polyclonal

This gene encodes a member of a family of proteins that are receptor associated proteins of the synapse. The encoded protein contains a conserved cAMP-dependent protein kinase phosphorylation site, and plays a critical role in clustering and anchoring nicotinic acetylcholine receptors at synaptic sites by linking the receptors to the underlying postsynaptic cytoskeleton, possibly by direct association with actin or spectrin. Mutations in this gene may play a role in postsynaptic congenital myasthenic syndromes. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Apr 2011]

RAPSN: Thought to play some role in anchoring or stabilizing the nicotinic acetylcholine receptor at synaptic sites. It may link the receptor to the underlying postsynaptic cytoskeleton, possibly by direct association with actin or spectrin. Defects in RAPSN are a cause of congenital myasthenic syndrome with acetylcholine receptor deficiency (CMS-ACHRD). A postsynaptic congenital myasthenic syndrome. Congenital myasthenic syndromes (CMS) are inherited disorders of neuromuscular transmission that stem from mutations in presynaptic, synaptic, or postsynaptic proteins. Defects in RAPSN are the cause of fetal akinesia deformation sequence (FADS); also known as Pena- Shokeir syndrome type 1 or fetal akinesia sequence or arthrogryposis multiplex congenita with pulmonary hypoplasia. FADS is a rare condition characterized by decreased intrauterine fetal movement, congenital limb contractures, pulmonary hypoplasia, polyhydramnios and craniofacial abnormalities. Belongs to the RAPsyn family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Ubiquitin conjugating system; Motility/polarity/chemotaxis; Cell adhesion

Chromosomal Location of Human Ortholog: 11p11.2

Cellular Component: cell junction; cytoskeleton; Golgi apparatus; neuromuscular junction; postsynaptic membrane

Molecular Function: acetylcholine receptor binding; ionotropic glutamate receptor binding; protein anchor; zinc ion binding

Biological Process: positive regulation of neuron apoptosis; synaptic transmission; synaptic transmission, cholinergic

Disease: Fetal Akinesia Deformation Sequence; Myasthenic Syndrome, Congenital, 11, Associated With Acetylcholine Receptor Deficiency