Incidental Mutation 'R4304:Npc1'
ID 322551
Institutional Source Beutler Lab
Gene Symbol Npc1
Ensembl Gene ENSMUSG00000024413
Gene Name NPC intracellular cholesterol transporter 1
Synonyms lcsd, nmf164, D18Ertd139e, D18Ertd723e, A430089E03Rik, C85354
MMRRC Submission 040865-MU
Accession Numbers
Essential gene? Possibly essential (E-score: 0.616) question?
Stock # R4304 (G1)
Quality Score 225
Status Not validated
Chromosome 18
Chromosomal Location 12322749-12369457 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to T at 12343584 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Alanine to Threonine at position 470 (A470T)
Ref Sequence ENSEMBL: ENSMUSP00000025279 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000025279]
AlphaFold O35604
Predicted Effect possibly damaging
Transcript: ENSMUST00000025279
AA Change: A470T

PolyPhen 2 Score 0.769 (Sensitivity: 0.85; Specificity: 0.92)
SMART Domains Protein: ENSMUSP00000025279
Gene: ENSMUSG00000024413
AA Change: A470T

DomainStartEndE-ValueType
low complexity region 8 15 N/A INTRINSIC
Pfam:NPC1_N 22 267 1.6e-79 PFAM
transmembrane domain 269 291 N/A INTRINSIC
transmembrane domain 353 375 N/A INTRINSIC
Pfam:Patched 436 896 3.5e-52 PFAM
Pfam:MMPL 648 794 6.3e-8 PFAM
Pfam:Sterol-sensing 649 803 2.7e-56 PFAM
Pfam:Patched 1023 1252 2.9e-33 PFAM
low complexity region 1259 1273 N/A INTRINSIC
Predicted Effect noncoding transcript
Transcript: ENSMUST00000145771
Meta Mutation Damage Score 0.1213 question?
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.4%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a large protein that resides in the limiting membrane of endosomes and lysosomes and mediates intracellular cholesterol trafficking via binding of cholesterol to its N-terminal domain. It is predicted to have a cytoplasmic C-terminus, 13 transmembrane domains, and 3 large loops in the lumen of the endosome - the last loop being at the N-terminus. This protein transports low-density lipoproteins to late endosomal/lysosomal compartments where they are hydrolized and released as free cholesterol. Defects in this gene cause Niemann-Pick type C disease, a rare autosomal recessive neurodegenerative disorder characterized by over accumulation of cholesterol and glycosphingolipids in late endosomal/lysosomal compartments.[provided by RefSeq, Aug 2009]
PHENOTYPE: Homozygotes for spontaneous and chemically induced mutations may exhibit lysosomal storage of non-esterified cholesterol, neurodegeneration, ataxia, presence of foam cells, sterility, and shortened lifespan. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 30 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adam32 A T 8: 25,391,545 (GRCm39) M323K probably damaging Het
Arhgap42 A G 9: 9,006,489 (GRCm39) S636P probably benign Het
Arhgef5 C T 6: 43,256,432 (GRCm39) A1180V probably damaging Het
Cep152 G A 2: 125,405,643 (GRCm39) Q1630* probably null Het
Cfap157 G A 2: 32,669,054 (GRCm39) R350W probably damaging Het
Cfap47 C G X: 78,541,635 (GRCm39) K469N probably damaging Het
Csgalnact1 A T 8: 68,825,294 (GRCm39) V400D possibly damaging Het
Fam3d G A 14: 8,349,324 (GRCm38) P209S probably damaging Het
Fig4 T A 10: 41,132,423 (GRCm39) D461V probably benign Het
Frmd4a C T 2: 4,337,889 (GRCm39) R32C probably benign Het
Gcfc2 G A 6: 81,919,988 (GRCm39) R397Q probably damaging Het
Gm20939 A C 17: 95,184,709 (GRCm39) Q452H probably benign Het
Gm5592 A T 7: 40,935,686 (GRCm39) M63L probably benign Het
H2-M3 T C 17: 37,583,295 (GRCm39) M252T probably benign Het
Lsm14a C A 7: 34,056,858 (GRCm39) probably null Het
Map4k4 T C 1: 40,013,132 (GRCm39) Y76H possibly damaging Het
Or4a68 A T 2: 89,270,542 (GRCm39) V27D probably damaging Het
Prr27 A G 5: 87,990,766 (GRCm39) H126R probably benign Het
Resf1 C T 6: 149,227,736 (GRCm39) Q261* probably null Het
Rptn C A 3: 93,304,238 (GRCm39) H524N probably benign Het
Slc4a11 A T 2: 130,530,058 (GRCm39) M240K probably benign Het
Smg1 T C 7: 117,738,741 (GRCm39) I3503V probably benign Het
Snx13 A G 12: 35,172,941 (GRCm39) K625E probably benign Het
Stk10 T C 11: 32,560,634 (GRCm39) V663A probably damaging Het
Tex11 C A X: 99,977,021 (GRCm39) A487S possibly damaging Het
Tpp1 T A 7: 105,399,516 (GRCm39) D84V possibly damaging Het
Vmn1r238 T A 18: 3,123,040 (GRCm39) R125* probably null Het
Vmn2r12 A G 5: 109,233,872 (GRCm39) L780P probably damaging Het
Wfdc15b A C 2: 164,057,388 (GRCm39) M1R probably null Het
Wnk2 C T 13: 49,244,313 (GRCm39) D508N probably damaging Het
Other mutations in Npc1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL02347:Npc1 APN 18 12,332,691 (GRCm39) missense probably benign 0.45
IGL02523:Npc1 APN 18 12,334,629 (GRCm39) missense probably benign 0.00
IGL03018:Npc1 APN 18 12,347,436 (GRCm39) missense probably damaging 0.99
IGL03101:Npc1 APN 18 12,331,596 (GRCm39) missense probably benign 0.15
IGL03151:Npc1 APN 18 12,352,332 (GRCm39) missense probably benign 0.05
IGL03377:Npc1 APN 18 12,344,878 (GRCm39) missense probably benign
PIT4354001:Npc1 UTSW 18 12,344,592 (GRCm39) missense probably benign 0.00
R0068:Npc1 UTSW 18 12,341,424 (GRCm39) missense probably benign 0.04
R0068:Npc1 UTSW 18 12,341,424 (GRCm39) missense probably benign 0.04
R0190:Npc1 UTSW 18 12,324,887 (GRCm39) missense probably damaging 1.00
R0200:Npc1 UTSW 18 12,352,261 (GRCm39) missense probably damaging 1.00
R0485:Npc1 UTSW 18 12,346,503 (GRCm39) missense probably benign 0.00
R0699:Npc1 UTSW 18 12,343,632 (GRCm39) missense probably benign 0.00
R0730:Npc1 UTSW 18 12,352,382 (GRCm39) missense probably benign 0.00
R1302:Npc1 UTSW 18 12,328,142 (GRCm39) missense probably benign 0.00
R1442:Npc1 UTSW 18 12,328,106 (GRCm39) missense probably benign
R1463:Npc1 UTSW 18 12,324,887 (GRCm39) missense probably damaging 1.00
R1804:Npc1 UTSW 18 12,356,145 (GRCm39) missense probably damaging 1.00
R1808:Npc1 UTSW 18 12,327,149 (GRCm39) missense probably damaging 1.00
R1928:Npc1 UTSW 18 12,346,435 (GRCm39) missense possibly damaging 0.79
R2112:Npc1 UTSW 18 12,346,529 (GRCm39) missense possibly damaging 0.49
R2117:Npc1 UTSW 18 12,329,613 (GRCm39) missense probably damaging 1.00
R2157:Npc1 UTSW 18 12,324,866 (GRCm39) missense probably damaging 0.98
R2279:Npc1 UTSW 18 12,330,236 (GRCm39) splice site probably null
R2311:Npc1 UTSW 18 12,335,240 (GRCm39) missense probably benign
R2446:Npc1 UTSW 18 12,347,396 (GRCm39) missense probably benign 0.01
R3004:Npc1 UTSW 18 12,330,311 (GRCm39) missense probably benign 0.03
R4090:Npc1 UTSW 18 12,331,219 (GRCm39) splice site probably null
R4308:Npc1 UTSW 18 12,343,584 (GRCm39) missense possibly damaging 0.77
R4564:Npc1 UTSW 18 12,324,789 (GRCm39) missense probably damaging 1.00
R4786:Npc1 UTSW 18 12,332,554 (GRCm39) missense probably benign 0.35
R5243:Npc1 UTSW 18 12,331,688 (GRCm39) intron probably benign
R5404:Npc1 UTSW 18 12,346,356 (GRCm39) missense possibly damaging 0.79
R5823:Npc1 UTSW 18 12,324,846 (GRCm39) missense possibly damaging 0.69
R6080:Npc1 UTSW 18 12,352,408 (GRCm39) missense probably damaging 1.00
R6215:Npc1 UTSW 18 12,369,249 (GRCm39) small deletion probably benign
R6301:Npc1 UTSW 18 12,330,302 (GRCm39) missense probably benign 0.00
R6476:Npc1 UTSW 18 12,334,751 (GRCm39) nonsense probably null
R7007:Npc1 UTSW 18 12,343,605 (GRCm39) missense probably benign 0.02
R7020:Npc1 UTSW 18 12,331,594 (GRCm39) missense probably damaging 1.00
R7048:Npc1 UTSW 18 12,337,822 (GRCm39) splice site probably null
R7116:Npc1 UTSW 18 12,344,601 (GRCm39) missense probably damaging 1.00
R7153:Npc1 UTSW 18 12,346,348 (GRCm39) missense possibly damaging 0.78
R7359:Npc1 UTSW 18 12,328,237 (GRCm39) missense probably benign 0.05
R7382:Npc1 UTSW 18 12,334,763 (GRCm39) missense probably damaging 0.99
R7765:Npc1 UTSW 18 12,328,105 (GRCm39) missense probably benign 0.01
R8047:Npc1 UTSW 18 12,346,374 (GRCm39) missense probably benign 0.00
R8094:Npc1 UTSW 18 12,327,297 (GRCm39) missense probably benign
R8161:Npc1 UTSW 18 12,328,129 (GRCm39) missense possibly damaging 0.77
R8310:Npc1 UTSW 18 12,326,455 (GRCm39) missense probably damaging 0.98
R8821:Npc1 UTSW 18 12,333,877 (GRCm39) missense probably benign 0.01
R8831:Npc1 UTSW 18 12,333,877 (GRCm39) missense probably benign 0.01
R8847:Npc1 UTSW 18 12,323,987 (GRCm39) missense probably damaging 1.00
R9022:Npc1 UTSW 18 12,346,422 (GRCm39) missense probably benign
R9343:Npc1 UTSW 18 12,334,769 (GRCm39) missense possibly damaging 0.52
R9460:Npc1 UTSW 18 12,346,398 (GRCm39) missense possibly damaging 0.93
R9723:Npc1 UTSW 18 12,343,649 (GRCm39) missense probably benign
X0012:Npc1 UTSW 18 12,326,368 (GRCm39) splice site probably null
Predicted Primers PCR Primer
(F):5'- CCATCTACTGGGTCTCCATATG -3'
(R):5'- TAGGAAGTATGCCCTCCGAG -3'

Sequencing Primer
(F):5'- GTAACAGAAGTTCTCAAATACCGAG -3'
(R):5'- GAAGTATGCCCTCCGAGCATCC -3'
Posted On 2015-06-20