This website uses cookies to ensure you get the best experience on our website.
- Table of Contents
Facts about Amiloride-sensitive sodium channel subunit alpha.
Plays an important role in electrolyte and blood pressure homeostasis, but also in airway surface liquid homeostasis, which is important for proper clearance of mucus. Controls the reabsorption of sodium in kidney, colon, lung and eccrine sweat glands.
Human | |
---|---|
Gene Name: | SCNN1A |
Uniprot: | P37088 |
Entrez: | 6337 |
Belongs to: |
---|
amiloride-sensitive sodium channel (TC 1.A.6) family |
alpha ENaC-2; alpha-ENaC; alpha-NaCH; amiloride-sensitive epithelial sodium channel alpha subunit; amiloride-sensitive sodium channel subunit alpha 2; amiloride-sensitive sodium channel subunit alpha; BESC2; ENaCa; ENaCalpha; Epithelial Na(+) channel subunit alpha; FLJ21883; nasal epithelial sodium channel alpha subunit; Nonvoltage-gated sodium channel 1 subunit alpha; SCNEA; SCNN1; sodium channel, nonvoltage-gated 1 alpha
Mass (kDA):
75.704 kDA
Human | |
---|---|
Location: | 12p13.31 |
Sequence: | 12; NC_000012.12 (6346843..6377357, complement) |
Expressed in the female reproductive tract, from the fimbrial end of the fallopian tube to the endometrium (at protein level) (PubMed:22207244). Expressed in kidney (at protein level). In the respiratory tract, expressed in the bronchial epithelium (at protein level). Highly expressed in lung. Detected at intermediate levels in pancreas and liver, and at low levels in heart and placenta (PubMed:22207244). in skin, expressed in keratinocytes, melanocytes and Merkel cells of the epidermal sub- layers, stratum basale, stratum spinosum and stratum granulosum (at protein level) (PubMed:28130590). Expressed in the outer root sheath of the hair follicles (at protein level) (PubMed:28130590). Detected in both peripheral and central cells of the sebaceous gland (at protein level) (PubMed:28130590). Expressed by eccrine sweat glands (at protein level) (PubMed:28130590). In skin, also expressed by arrector pili muscle cells and intradermal adipocytes (PubMed:28130590). Isoform 1 and isoform 2 predominate in all tissues. Expression of isoform 3, isoform 4 and isoform 5 is very low or not detectable, except in lung and heart (PubMed:9575806).
Apical cell membrane; Multi-pass membrane protein. Cell projection, cilium. Cytoplasmic granule. Cytoplasm. Cytoplasmic vesicle, secretory vesicle, acrosome. Cell projection, cilium, flagellum. In the oviduct and bronchus, located on cilia in multi-ciliated cells. In endometrial non-ciliated epithelial cells, restricted to apical surfaces. In epidermis, located nearly uniformly in the cytoplasm in a granular distribution (PubMed:28130590). In sebaceous glands, observed only in the cytoplasmic space in between the lipid vesicles (PubMed:28130590). In eccrine sweat glands, mainly located at the
PMID: 8278374 by Voilley N., et al. The lung amiloride-sensitive Na+ channel: biophysical properties, pharmacology, ontogenesis, and molecular cloning.
PMID: 8023962 by McDonald F.J., et al. Cloning, expression, and tissue distribution of a human amiloride- sensitive Na+ channel.