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SCNN1D information


SCNN1D
Identifiers
AliasesSCNN1D, ENaCd, ENaCdelta, SCNED, dNaCh, sodium channel epithelial 1 delta subunit, sodium channel epithelial 1 subunit delta
External IDsOMIM: 601328; HomoloGene: 48152; GeneCards: SCNN1D; OMA:SCNN1D - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001130413
NM_002978

n/a

RefSeq (protein)

NP_001123885

n/a

Location (UCSC)Chr 1: 1.28 – 1.29 Mbn/a
PubMed search[2]n/a
Wikidata
View/Edit Human

The SCNN1D gene encodes for the δ (delta) subunit of the epithelial sodium channel ENaC in vertebrates. ENaC is assembled as a heterotrimer composed of three homologous subunits α, β, and γ or δ, β, and γ.[3] The other ENAC subunits are encoded by SCNN1A, SCNN1B, and SCNN1G.

ENaC is expressed in epithelial cells and is different from the voltage-gated sodium channel that is involved in the generation of action potentials in neurons. The abbreviation for the genes encoding for voltage-gated sodium channel starts with three letters: SCN. In contrast to these sodium channels, ENaC is constitutively active and is not voltage-dependent. The second N in the abbreviation (SCNN1D) represents that these are NON-voltage-gated channels.

In most vertebrates, sodium ions are the major determinant of the osmolarity of the extracellular fluid.[4] ENaC allows transfer of sodium ions across the epithelial cell membrane in so-called "tight-epithelia" that have low permeability. The flow of sodium ions across epithelia affects osmolarity of the extracellular fluid. Thus, ENaC plays a central role in the regulation of body fluid and electrolyte homeostasis and consequently affects blood pressure.[5]

As ENaC is strongly inhibited by amiloride, it is also referred to as an "amiloride-sensitive sodium channel".

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000162572 – Ensembl, May 2017
  2. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. ^ Hanukoglu I, Hanukoglu A (January 2016). "Epithelial sodium channel (ENaC) family: Phylogeny, structure-function, tissue distribution, and associated inherited diseases". Gene. 579 (2): 95–132. doi:10.1016/j.gene.2015.12.061. PMC 4756657. PMID 26772908.
  4. ^ Bourque CW (July 2008). "Central mechanisms of osmosensation and systemic osmoregulation". Nature Reviews. Neuroscience. 9 (7): 519–31. doi:10.1038/nrn2400. PMID 18509340. S2CID 205504313.
  5. ^ Rossier BC, Baker ME, Studer RA (January 2015). "Epithelial sodium transport and its control by aldosterone: the story of our internal environment revisited". Physiological Reviews. 95 (1): 297–340. doi:10.1152/physrev.00011.2014. PMID 25540145.

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SCNN1D

Last Update:

The SCNN1D gene encodes for the δ (delta) subunit of the epithelial sodium channel ENaC in vertebrates. ENaC is assembled as a heterotrimer composed of...

Word Count : 1553

Epithelial sodium channel

Last Update:

These subunits are encoded by four genes: SCNN1A, SCNN1B, SCNN1G, and SCNN1D. The ENaC is involved primarily in the reabsorption of sodium ions at the...

Word Count : 2827

Index of biophysics articles

Last Update:

S-layer SCN10A SCN1B SCN2B SCN3A SCN3B SCN4B SCN7A SCN8A SCNN1A SCNN1B SCNN1D SCNN1G SIGLEC SK3 SK channel Saffman–Delbrück model Sammy Lee (scientist)...

Word Count : 1545

SCNN1A

Last Update:

δ, β, and γ. The other ENAC subunits are encoded by SCNN1B, SCNN1G, and SCNN1D. ENaC is expressed in epithelial cells and is different from the voltage-gated...

Word Count : 3120

SCNN1B

Last Update:

δ, β, and γ. The other ENAC subunits are encoded by SCNN1A, SCNN1G, and SCNN1D. ENaC is expressed in epithelial cells and is different from the voltage-gated...

Word Count : 3035

SCNN1G

Last Update:

δ, β, and γ. The other ENAC subunits are encoded by SCNN1A, SCNN1B, and SCNN1D. ENaC is expressed in epithelial cells and is different from the voltage-gated...

Word Count : 3401

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