Incidental Mutation 'R5404:Npc1'
ID 428649
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 042975-MU
Accession Numbers
Essential gene? Possibly essential (E-score: 0.637) question?
Stock # R5404 (G1)
Quality Score 225
Status Not validated
Chromosome 18
Chromosomal Location 12322749-12369457 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 12346356 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Leucine to Proline at position 280 (L280P)
Ref Sequence ENSEMBL: ENSMUSP00000025279 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000025279]
AlphaFold O35604
Predicted Effect possibly damaging
Transcript: ENSMUST00000025279
AA Change: L280P

PolyPhen 2 Score 0.791 (Sensitivity: 0.85; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000025279
Gene: ENSMUSG00000024413
AA Change: L280P

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: ENSMUST00000133112
Predicted Effect noncoding transcript
Transcript: ENSMUST00000145771
Predicted Effect noncoding transcript
Transcript: ENSMUST00000149211
Coding Region Coverage
  • 1x: 99.4%
  • 3x: 98.8%
  • 10x: 97.6%
  • 20x: 96.0%
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: 33 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
A1bg T C 15: 60,791,545 (GRCm39) H297R probably benign Het
Ccnk A T 12: 108,161,882 (GRCm39) K262N possibly damaging Het
Clec4b2 A T 6: 123,158,308 (GRCm39) Y58F probably benign Het
Cp A C 3: 20,043,292 (GRCm39) T1027P possibly damaging Het
Cpox G A 16: 58,495,649 (GRCm39) G322D probably damaging Het
Cry1 T C 10: 85,020,283 (GRCm39) N18S probably damaging Het
Dnah8 G A 17: 30,967,542 (GRCm39) D2585N probably benign Het
Dock10 A G 1: 80,481,630 (GRCm39) probably benign Het
Fance A T 17: 28,537,034 (GRCm39) R58W probably null Het
Fermt1 T C 2: 132,776,789 (GRCm39) D233G possibly damaging Het
Gabpa T A 16: 84,657,351 (GRCm39) Y409N probably damaging Het
Gpr162 A G 6: 124,838,606 (GRCm39) S15P possibly damaging Het
Grid2 T A 6: 63,907,894 (GRCm39) I178N probably damaging Het
Il17re T C 6: 113,446,063 (GRCm39) V233A probably benign Het
Lemd3 G A 10: 120,767,863 (GRCm39) Q672* probably null Het
Myh15 A G 16: 48,980,341 (GRCm39) T1488A probably benign Het
Narf T A 11: 121,133,452 (GRCm39) H84Q probably benign Het
Nedd1 C T 10: 92,552,054 (GRCm39) V69I probably benign Het
Nfil3 G A 13: 53,122,091 (GRCm39) S271F probably damaging Het
Or2n1e T A 17: 38,586,517 (GRCm39) L285* probably null Het
Or4p20 C T 2: 88,254,145 (GRCm39) V75M probably damaging Het
Or51a25 T A 7: 102,372,807 (GRCm39) I297F possibly damaging Het
Poli A G 18: 70,642,503 (GRCm39) S503P probably benign Het
Rbm5 T C 9: 107,642,752 (GRCm39) E94G probably damaging Het
Robo4 CGG CG 9: 37,322,786 (GRCm39) probably null Het
Rps6ka5 T C 12: 100,582,352 (GRCm39) I173M probably damaging Het
Slc40a1 A G 1: 45,951,488 (GRCm39) L223P probably damaging Het
Smg1 T C 7: 117,806,131 (GRCm39) K213E probably damaging Het
Spem1 T A 11: 69,711,763 (GRCm39) K300N probably damaging Het
Tchh A G 3: 93,354,982 (GRCm39) E1474G unknown Het
Tenm4 A T 7: 96,543,887 (GRCm39) R1968W probably damaging Het
Tshz2 A T 2: 169,726,240 (GRCm39) M279L probably benign Het
Tuba3a G T 6: 125,258,555 (GRCm39) T145K possibly 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
R4304:Npc1 UTSW 18 12,343,584 (GRCm39) missense possibly damaging 0.77
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
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'- ACTAGCTGTAGGCACAAGC -3'
(R):5'- TAGATCTTTCAATCCTTGGGATGG -3'

Sequencing Primer
(F):5'- GCACAAGCCATCCAGGG -3'
(R):5'- TCAATCCTTGGGATGGAGCCC -3'
Posted On 2016-09-06