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The family of sodium channels has 9 known members, with amino acid identity >50% in the trans-membrane segments and extracellular loop regions. A standardized nomenclature for sodium channels is currently used and is maintained by the IUPHAR. [11] The proteins of these channels are named Na v 1.1 through Na v 1.9.
The epithelial sodium channel (ENaC), (also known as amiloride-sensitive sodium channel) is a membrane-bound ion channel that is selectively permeable to sodium ions (Na +).It is assembled as a heterotrimer composed of three homologous subunits α or δ, β, and γ, [2] These subunits are encoded by four genes: SCNN1A, SCNN1B, SCNN1G, and SCNN1D.
Voltage-gated sodium channels (VGSCs), also known as voltage-dependent sodium channels (VDSCs), are a group of voltage-gated ion channels found in the membrane of excitable cells (e.g., muscle, glial cells, neurons, etc.) with a permeability to the sodium ion Na +. They are the main channels involved in action potential of excitable cells.
20264 Ensembl ENSG00000185313 ENSMUSG00000034533 UniProt Q9Y5Y9 Q6QIY3 RefSeq (mRNA) NM_001293306 NM_001293307 NM_006514 NM_001205321 NM_009134 RefSeq (protein) NP_001280235 NP_001280236 NP_006505 NP_001192250 NP_033160 Location (UCSC) Chr 3: 38.7 – 38.82 Mb Chr 9: 119.44 – 119.55 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Na v 1.8 is a sodium ion channel subtype that in ...
SCNN1A, SCNN1B, and SCNN1G are commonly expressed in tight epithelia that have low water permeability. The major organs where ENaC is expressed include parts of the kidney tubular epithelia, [5] [7] [17] the respiratory airway, [18] the female reproductive tract, [18] male reproductive tract, including testis, spermatogonia in the seminiferous tubules, Sertoli cells, and spermatozoa, [19 ...
Sodium voltage-gated channel alpha subunit 9 (also Na v 1.7) is a sodium ion channel that, in humans, is encoded by the SCN9A gene. [5] [6] [7] It is usually expressed at high levels in two types of neurons: the nociceptive (pain) neurons at the dorsal root ganglion (DRG) and trigeminal ganglion; and sympathetic ganglion neurons, which are part of the autonomic (involuntary) nervous system.
There are also several distinct sodium channel alpha subunit isoforms in skeletal and cardiac muscle (Na v 1.4 [15] and Na v 1.5, [16] respectively). The SCN1A gene codes for the alpha subunit of the voltage-gated sodium ion channel making it a member of ten paralogous gene families which code for the voltage-gated sodium transmembrane proteins ...
Sodium channel, voltage-gated, type XI, alpha subunit also known as SCN11A or Na v 1.9 is a voltage-gated sodium ion channel protein which is encoded by the SCN11A gene on chromosome 3 in humans. [ 5 ] [ 6 ] Like Na v 1.7 and Na v 1.8 , Na v 1.9 plays a role in pain perception.