Incidental Mutation 'R0442:Scnn1a'
ID 39215
Institutional Source Beutler Lab
Gene Symbol Scnn1a
Ensembl Gene ENSMUSG00000030340
Gene Name sodium channel, nonvoltage-gated 1 alpha
Synonyms Scnn1, mENaC, ENaC alpha
MMRRC Submission 038643-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R0442 (G1)
Quality Score 116
Status Validated
Chromosome 6
Chromosomal Location 125297622-125321906 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to G at 125316100 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Methionine to Arginine at position 346 (M346R)
Ref Sequence ENSEMBL: ENSMUSP00000135798 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000081440] [ENSMUST00000175966] [ENSMUST00000176110] [ENSMUST00000176442] [ENSMUST00000176655] [ENSMUST00000177329]
AlphaFold no structure available at present
Predicted Effect probably damaging
Transcript: ENSMUST00000081440
AA Change: M453R

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000080164
Gene: ENSMUSG00000030340
AA Change: M453R

DomainStartEndE-ValueType
low complexity region 13 18 N/A INTRINSIC
Pfam:ASC 88 600 1.1e-93 PFAM
low complexity region 647 677 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000175966
SMART Domains Protein: ENSMUSP00000135551
Gene: ENSMUSG00000030340

DomainStartEndE-ValueType
Pfam:ASC 62 264 3.5e-28 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000176110
AA Change: M427R

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000134940
Gene: ENSMUSG00000030340
AA Change: M427R

DomainStartEndE-ValueType
Pfam:ASC 62 575 1.9e-112 PFAM
low complexity region 621 651 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000176442
AA Change: M346R

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000135336
Gene: ENSMUSG00000030340
AA Change: M346R

DomainStartEndE-ValueType
Pfam:ASC 1 494 6.3e-105 PFAM
low complexity region 540 570 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000176655
AA Change: M346R

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000135798
Gene: ENSMUSG00000030340
AA Change: M346R

DomainStartEndE-ValueType
Pfam:ASC 1 494 6.4e-105 PFAM
low complexity region 540 570 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000177329
AA Change: M427R

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000134929
Gene: ENSMUSG00000030340
AA Change: M427R

DomainStartEndE-ValueType
Pfam:ASC 62 575 1.9e-112 PFAM
low complexity region 621 651 N/A INTRINSIC
Meta Mutation Damage Score 0.8898 question?
Coding Region Coverage
  • 1x: 98.8%
  • 3x: 97.5%
  • 10x: 93.4%
  • 20x: 81.2%
Validation Efficiency 99% (70/71)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Nonvoltage-gated, amiloride-sensitive, sodium channels control fluid and electrolyte transport across epithelia in many organs. These channels are heteromeric complexes consisting of 3 subunits: alpha, beta, and gamma. This gene encodes the alpha subunit, and mutations in this gene have been associated with pseudohypoaldosteronism type 1 (PHA1), a rare salt wasting disease resulting from target organ unresponsiveness to mineralocorticoids. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Apr 2009]
PHENOTYPE: Homozygotes for targeted null mutations exhibit skin with epithelial hyperplasia, abnormal nuclei, premature lipid secretion, and abnormal keratohyaline granules. Mutants die within 40 hours of birth due to inability to clear their lungs of liquid. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adgrb3 T A 1: 25,435,551 (GRCm39) N816Y probably damaging Het
Arfgef3 T C 10: 18,553,563 (GRCm39) probably benign Het
Cd200 T A 16: 45,217,518 (GRCm39) S58C probably damaging Het
Cep128 C T 12: 91,233,545 (GRCm39) E508K probably damaging Het
Dnah2 C A 11: 69,339,368 (GRCm39) L3046F probably damaging Het
Duox2 T C 2: 122,119,813 (GRCm39) N872D probably benign Het
Fam90a1a C T 8: 22,453,074 (GRCm39) T143I probably benign Het
Fdft1 T C 14: 63,400,798 (GRCm39) T112A probably benign Het
Gimap9 G T 6: 48,655,000 (GRCm39) G196* probably null Het
Grhl1 G A 12: 24,662,169 (GRCm39) R536Q probably damaging Het
Gtpbp3 T A 8: 71,944,135 (GRCm39) V293E probably damaging Het
Hcn3 A T 3: 89,058,847 (GRCm39) F251Y probably damaging Het
Hectd4 T A 5: 121,462,045 (GRCm39) C971S possibly damaging Het
Helz2 T A 2: 180,874,002 (GRCm39) D2164V probably damaging Het
Hif1an T G 19: 44,554,451 (GRCm39) L188R probably damaging Het
Hjurp GT GTT 1: 88,194,246 (GRCm39) probably null Het
Iqgap3 C T 3: 88,023,266 (GRCm39) P519L probably damaging Het
Jakmip1 T G 5: 37,292,897 (GRCm39) probably null Het
Klra1 T C 6: 130,349,835 (GRCm39) Y201C probably damaging Het
Minpp1 T C 19: 32,471,348 (GRCm39) F299L possibly damaging Het
Myb A G 10: 21,002,095 (GRCm39) S749P probably benign Het
Myo3b T C 2: 70,069,305 (GRCm39) probably null Het
Naip1 T A 13: 100,581,024 (GRCm39) R74S probably benign Het
Nt5m A G 11: 59,765,445 (GRCm39) T158A possibly damaging Het
Obscn A T 11: 58,893,000 (GRCm39) probably benign Het
Or5af1 T A 11: 58,722,257 (GRCm39) Y92* probably null Het
Or5b119 T G 19: 13,457,412 (GRCm39) D50A probably damaging Het
Or6c210 T C 10: 129,495,693 (GRCm39) I6T probably benign Het
Otogl T A 10: 107,712,716 (GRCm39) T543S probably damaging Het
Pds5b T C 5: 150,640,009 (GRCm39) probably benign Het
Plekhm1 A G 11: 103,288,000 (GRCm39) M49T possibly damaging Het
Rabl6 A T 2: 25,477,534 (GRCm39) S305R probably damaging Het
Rad54b G A 4: 11,609,480 (GRCm39) probably benign Het
Rad54b C A 4: 11,610,362 (GRCm39) R660S probably benign Het
Rexo5 T C 7: 119,442,508 (GRCm39) L542P probably damaging Het
Rp1 C T 1: 4,416,970 (GRCm39) D1381N probably benign Het
Sirpb1c A G 3: 15,856,710 (GRCm39) I380T probably benign Het
Snrnp40 C G 4: 130,271,836 (GRCm39) probably null Het
Sstr3 A T 15: 78,424,597 (GRCm39) L50Q probably damaging Het
St3gal6 C A 16: 58,293,816 (GRCm39) A238S probably damaging Het
St3gal6 G T 16: 58,293,818 (GRCm39) A237E probably damaging Het
Sun5 T C 2: 153,712,872 (GRCm39) D16G possibly damaging Het
Svil A T 18: 5,046,870 (GRCm39) T39S probably damaging Het
Taar1 A G 10: 23,796,380 (GRCm39) Y26C possibly damaging Het
Ugt1a1 AT A 1: 88,140,093 (GRCm39) probably null Het
Use1 T C 8: 71,819,702 (GRCm39) probably benign Het
Usp54 T C 14: 20,657,277 (GRCm39) Y7C probably damaging Het
Zbtb37 A G 1: 160,859,918 (GRCm39) F129S possibly damaging Het
Zfhx2 T C 14: 55,304,357 (GRCm39) H1209R possibly damaging Het
Zfp28 T C 7: 6,397,998 (GRCm39) L811P probably damaging Het
Zfp616 T C 11: 73,975,321 (GRCm39) I530T possibly damaging Het
Other mutations in Scnn1a
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00227:Scnn1a APN 6 125,315,342 (GRCm39) missense probably benign 0.11
IGL01793:Scnn1a APN 6 125,320,666 (GRCm39) missense probably benign 0.03
IGL01992:Scnn1a APN 6 125,315,900 (GRCm39) critical splice donor site probably null
IGL03280:Scnn1a APN 6 125,319,744 (GRCm39) splice site probably benign
scylla UTSW 6 125,320,208 (GRCm39) missense probably damaging 0.98
R0086:Scnn1a UTSW 6 125,319,550 (GRCm39) splice site probably benign
R0454:Scnn1a UTSW 6 125,299,189 (GRCm39) missense probably damaging 1.00
R0578:Scnn1a UTSW 6 125,299,207 (GRCm39) missense probably damaging 0.97
R1538:Scnn1a UTSW 6 125,315,856 (GRCm39) missense possibly damaging 0.48
R1579:Scnn1a UTSW 6 125,299,103 (GRCm39) missense probably damaging 1.00
R1803:Scnn1a UTSW 6 125,309,157 (GRCm39) missense probably damaging 0.98
R1876:Scnn1a UTSW 6 125,315,801 (GRCm39) missense probably benign 0.05
R2113:Scnn1a UTSW 6 125,314,774 (GRCm39) missense possibly damaging 0.60
R2178:Scnn1a UTSW 6 125,307,965 (GRCm39) missense probably damaging 0.96
R2960:Scnn1a UTSW 6 125,299,256 (GRCm39) missense probably damaging 1.00
R4072:Scnn1a UTSW 6 125,315,870 (GRCm39) missense probably damaging 1.00
R4603:Scnn1a UTSW 6 125,299,123 (GRCm39) missense probably damaging 1.00
R4928:Scnn1a UTSW 6 125,299,136 (GRCm39) missense probably damaging 1.00
R5436:Scnn1a UTSW 6 125,319,985 (GRCm39) missense possibly damaging 0.94
R6812:Scnn1a UTSW 6 125,314,819 (GRCm39) missense probably benign 0.09
R7089:Scnn1a UTSW 6 125,314,770 (GRCm39) missense probably benign 0.05
R8371:Scnn1a UTSW 6 125,320,806 (GRCm39) missense possibly damaging 0.83
R8372:Scnn1a UTSW 6 125,320,681 (GRCm39) missense probably damaging 0.96
R8841:Scnn1a UTSW 6 125,320,208 (GRCm39) missense probably damaging 0.98
R9509:Scnn1a UTSW 6 125,319,604 (GRCm39) missense probably damaging 0.99
X0026:Scnn1a UTSW 6 125,299,073 (GRCm39) missense probably damaging 1.00
Z1176:Scnn1a UTSW 6 125,320,855 (GRCm39) missense probably damaging 0.96
Predicted Primers PCR Primer
(F):5'- GCAGTGATGTCCCTGTCAAGAACC -3'
(R):5'- AGATGTAGGCACATTGAACCACAGC -3'

Sequencing Primer
(F):5'- GGTACACAGAGCCTGTCAC -3'
(R):5'- gcacacacacacacacac -3'
Posted On 2013-05-23