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Protein

Amiloride-sensitive sodium channel subunit gamma

Gene

Scnn1g

Organism
Mus musculus (Mouse)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Sodium permeable non-voltage-sensitive ion channel inhibited by the diuretic amiloride. Mediates the electrodiffusion of the luminal sodium (and water, which follows osmotically) through the apical membrane of epithelial cells. Plays an essential 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 sweat glands. Also plays a role in taste perception.By similarity1 Publication

Activity regulationi

Activated by WNK1, WNK2, WNK3 and WNK4.1 Publication

GO - Molecular functioni

  • ion channel activity Source: MGI
  • ligand-gated sodium channel activity Source: MGI
  • WW domain binding Source: MGI

GO - Biological processi

Keywordsi

Molecular functionIon channel, Sodium channel
Biological processIon transport, Sensory transduction, Sodium transport, Taste, Transport
LigandSodium

Enzyme and pathway databases

ReactomeiR-MMU-2672351 Stimuli-sensing channels

Names & Taxonomyi

Protein namesi
Recommended name:
Amiloride-sensitive sodium channel subunit gamma
Alternative name(s):
Epithelial Na(+) channel subunit gamma
Short name:
Gamma-ENaC
Gamma-NaCH
Nonvoltage-gated sodium channel 1 subunit gamma
SCNEG
Gene namesi
Name:Scnn1g
OrganismiMus musculus (Mouse)
Taxonomic identifieri10090 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
Proteomesi
  • UP000000589 Componenti: Chromosome 7

Organism-specific databases

MGIiMGI:104695 Scnn1g

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 55CytoplasmicBy similarityAdd BLAST55
Transmembranei56 – 76Helical; Name=1Sequence analysisAdd BLAST21
Topological domaini77 – 547ExtracellularBy similarityAdd BLAST471
Transmembranei548 – 568Helical; Name=2Sequence analysisAdd BLAST21
Topological domaini569 – 655CytoplasmicBy similarityAdd BLAST87

Keywords - Cellular componenti

Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001812771 – 655Amiloride-sensitive sodium channel subunit gammaAdd BLAST655

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Glycosylationi215N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi277N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi503N-linked (GlcNAc...) asparagineSequence analysis1

Post-translational modificationi

ENaC cleavage by furin, and subsequently by prostasin (PRSS8), leads to a stepwise increase in the open probability of the channel as a result of release of the alpha and gamma subunit inhibitory tracts, respectively. Interaction of ENaC subunit SCNN1B with BPIFA1 protects ENaC against proteolytic activation.By similarity
Phosphorylated on serine and threonine residues. Aldosterone and insulin increase the basal level of phosphorylation.By similarity
Ubiquitinated; this targets individual subunits for endocytosis and proteasome-mediated degradation.By similarity

Keywords - PTMi

Glycoprotein, Phosphoprotein, Ubl conjugation

Proteomic databases

MaxQBiQ9WU39
PaxDbiQ9WU39
PRIDEiQ9WU39

PTM databases

iPTMnetiQ9WU39
PhosphoSitePlusiQ9WU39
SwissPalmiQ9WU39

Miscellaneous databases

PMAP-CutDBiQ9WU39

Expressioni

Tissue specificityi

Lung and kidney.1 Publication

Gene expression databases

BgeeiENSMUSG00000000216 Expressed in 68 organ(s), highest expression level in cortex of kidney
CleanExiMM_SCNN1G
GenevisibleiQ9WU39 MM

Interactioni

Subunit structurei

Heterotrimer containing an alpha/SCNN1A, a beta/SCNN1B and a gamma/SCNN1G subunit. An additional delta/SCNN1D subunit exists only in some organisms and can replace the alpha/SCNN1A subunit to form an alternative channel with specific properties (Probable). Interacts with NEDD4; via the WW domains (PubMed:11244092, PubMed:15123669). Interacts with NEDD4L; via the WW domains (PubMed:12424229, PubMed:11244092, PubMed:15123669). Interacts with WWP1; via the WW domains (By similarity). Interacts with WWP2; via the WW domains. Interacts with the full-length immature form of PCSK9 (pro-PCSK9) (By similarity).By similarity1 Publication3 Publications

GO - Molecular functioni

Protein-protein interaction databases

BioGridi203107, 4 interactors
ComplexPortaliCPX-315 Amiloride-sensitive sodium channel complex, alpha-beta-gamma
STRINGi10090.ENSMUSP00000000221

Structurei

3D structure databases

ProteinModelPortaliQ9WU39
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiKOG4294 Eukaryota
ENOG410ZNFK LUCA
GeneTreeiENSGT00760000119120
HOGENOMiHOG000236286
HOVERGENiHBG058435
InParanoidiQ9WU39
KOiK04827
OMAiNWMYCYY
OrthoDBiEOG091G0KW6
PhylomeDBiQ9WU39
TreeFamiTF330663

Family and domain databases

InterProiView protein in InterPro
IPR001873 ENaC
IPR004724 ENaC_chordates
IPR020903 ENaC_CS
PANTHERiPTHR11690 PTHR11690, 1 hit
PfamiView protein in Pfam
PF00858 ASC, 1 hit
PRINTSiPR01078 AMINACHANNEL
TIGRFAMsiTIGR00859 ENaC, 1 hit
PROSITEiView protein in PROSITE
PS01206 ASC, 1 hit

Sequencei

Sequence statusi: Complete.

Q9WU39-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MAPGEKIKAK IKKNLPVRGP QAPTIKDLMH WYCLNTNTHG CRRIVVSRGR
60 70 80 90 100
LRRLLWIAFT LTAVALIIWQ CALLVFSFYT VSVSIKVHFQ KLDFPAVTIC
110 120 130 140 150
NINPYKYSAV SDLLTDLDSE TKQALLSLYG VKDVLDSTPR KRREAGSMRS
160 170 180 190 200
TWEGTPPRFL NLIPLLVFNE NEKGKARDFF TGRKRKISGK IIHKASNVMH
210 220 230 240 250
VHESKKLVGF QLCSNDTSDC ATYTFSSGIN AIQEWYKLHY MNIMAQVPLE
260 270 280 290 300
KKINMSYSAE ELLVTCFFDG MSCDARNFTL FHHPMYGNCY TFNNRENATI
310 320 330 340 350
LSTSMGGSEY GLQVILYINE DEYNPFLVSS TGAKVLVHQQ NEYPFIEDVG
360 370 380 390 400
TEIETAMSTS IGMHLTESFK LSEPYSQCTE DGSDVPVTNI YNAAYSLQIC
410 420 430 440 450
LYSCFQTKMV EKCGCAQYSQ PLPPAANYCN YQQHPNWMYC YYQLYQAFVR
460 470 480 490 500
EELGCQSVCK QSCSFKEWTL TTSLAQWPSE ASEKWLLNVL TWDQSQQINK
510 520 530 540 550
KLNKTDLAKL LIFYKDLNQR SIMESPANSI EMLLSNFGGQ LGLWMSCSVV
560 570 580 590 600
CVIEIIEVFF IDFFSIIARR QWQKAKDWWA RRRTPPSTET PSSQQGQDNP
610 620 630 640 650
ALDTDDDLPT FTSAMRLPPA PEAPVPGTPP PRYNTLRLDS AFSSQLTDTQ

LTNEF
Length:655
Mass (Da):74,635
Last modified:November 1, 1999 - v1
Checksum:iABADDA9D6160596D
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF112187 mRNA Translation: AAD21246.1
BC021338 mRNA Translation: AAH21338.1
CCDSiCCDS21803.1
RefSeqiNP_035456.1, NM_011326.3
UniGeneiMm.35247

Genome annotation databases

EnsembliENSMUST00000000221; ENSMUSP00000000221; ENSMUSG00000000216
GeneIDi20278
KEGGimmu:20278
UCSCiuc009jnv.1 mouse

Similar proteinsi

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF112187 mRNA Translation: AAD21246.1
BC021338 mRNA Translation: AAH21338.1
CCDSiCCDS21803.1
RefSeqiNP_035456.1, NM_011326.3
UniGeneiMm.35247

3D structure databases

ProteinModelPortaliQ9WU39
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi203107, 4 interactors
ComplexPortaliCPX-315 Amiloride-sensitive sodium channel complex, alpha-beta-gamma
STRINGi10090.ENSMUSP00000000221

PTM databases

iPTMnetiQ9WU39
PhosphoSitePlusiQ9WU39
SwissPalmiQ9WU39

Proteomic databases

MaxQBiQ9WU39
PaxDbiQ9WU39
PRIDEiQ9WU39

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSMUST00000000221; ENSMUSP00000000221; ENSMUSG00000000216
GeneIDi20278
KEGGimmu:20278
UCSCiuc009jnv.1 mouse

Organism-specific databases

CTDi6340
MGIiMGI:104695 Scnn1g

Phylogenomic databases

eggNOGiKOG4294 Eukaryota
ENOG410ZNFK LUCA
GeneTreeiENSGT00760000119120
HOGENOMiHOG000236286
HOVERGENiHBG058435
InParanoidiQ9WU39
KOiK04827
OMAiNWMYCYY
OrthoDBiEOG091G0KW6
PhylomeDBiQ9WU39
TreeFamiTF330663

Enzyme and pathway databases

ReactomeiR-MMU-2672351 Stimuli-sensing channels

Miscellaneous databases

PMAP-CutDBiQ9WU39
PROiPR:Q9WU39
SOURCEiSearch...

Gene expression databases

BgeeiENSMUSG00000000216 Expressed in 68 organ(s), highest expression level in cortex of kidney
CleanExiMM_SCNN1G
GenevisibleiQ9WU39 MM

Family and domain databases

InterProiView protein in InterPro
IPR001873 ENaC
IPR004724 ENaC_chordates
IPR020903 ENaC_CS
PANTHERiPTHR11690 PTHR11690, 1 hit
PfamiView protein in Pfam
PF00858 ASC, 1 hit
PRINTSiPR01078 AMINACHANNEL
TIGRFAMsiTIGR00859 ENaC, 1 hit
PROSITEiView protein in PROSITE
PS01206 ASC, 1 hit
ProtoNetiSearch...

Entry informationi

Entry nameiSCNNG_MOUSE
AccessioniPrimary (citable) accession number: Q9WU39
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 1, 2000
Last sequence update: November 1, 1999
Last modified: September 12, 2018
This is version 138 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

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