Incidental Mutation 'R3879:Cyp46a1'
ID 308690
Institutional Source Beutler Lab
Gene Symbol Cyp46a1
Ensembl Gene ENSMUSG00000021259
Gene Name cytochrome P450, family 46, subfamily a, polypeptide 1
Synonyms cholestrol 24-hydroxylase, Cyp46
MMRRC Submission 040793-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R3879 (G1)
Quality Score 223
Status Validated
Chromosome 12
Chromosomal Location 108300640-108328493 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 108324389 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Threonine to Alanine at position 389 (T389A)
Ref Sequence ENSEMBL: ENSMUSP00000021684 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000021684]
AlphaFold Q9WVK8
Predicted Effect probably benign
Transcript: ENSMUST00000021684
AA Change: T389A

PolyPhen 2 Score 0.141 (Sensitivity: 0.92; Specificity: 0.86)
SMART Domains Protein: ENSMUSP00000021684
Gene: ENSMUSG00000021259
AA Change: T389A

DomainStartEndE-ValueType
low complexity region 4 18 N/A INTRINSIC
Pfam:p450 34 484 1.7e-86 PFAM
low complexity region 493 499 N/A INTRINSIC
Predicted Effect noncoding transcript
Transcript: ENSMUST00000222240
Meta Mutation Damage Score 0.3188 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.4%
  • 20x: 95.5%
Validation Efficiency 95% (38/40)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This endoplasmic reticulum protein is expressed in the brain, where it converts cholesterol to 24S-hydroxycholesterol. While cholesterol cannot pass the blood-brain barrier, 24S-hydroxycholesterol can be secreted in the brain into the circulation to be returned to the liver for catabolism. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygouse for deletions in this gene are essentially normal. Levels of 24(s)-hydroxycholesterol are reduced in serum and in the brain. Cholesterol synthesis in the brain is reduced 40%. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 33 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4933434E20Rik T C 3: 89,970,561 (GRCm39) probably benign Het
Aass G A 6: 23,122,520 (GRCm39) H68Y probably damaging Het
Abcc8 T A 7: 45,754,051 (GRCm39) K1588N possibly damaging Het
Calcoco1 T C 15: 102,615,823 (GRCm39) D601G probably damaging Het
Ccdc175 C A 12: 72,182,792 (GRCm39) R409I probably damaging Het
Ccnl1 A G 3: 65,856,179 (GRCm39) V242A possibly damaging Het
Clasp2 T C 9: 113,719,029 (GRCm39) F705L probably damaging Het
Eps8 A G 6: 137,504,360 (GRCm39) probably benign Het
Gm9894 T C 13: 67,912,916 (GRCm39) noncoding transcript Het
Kcnd3 C T 3: 105,566,082 (GRCm39) A421V probably damaging Het
Nup153 A T 13: 46,837,436 (GRCm39) V1262E probably damaging Het
Nup210l A G 3: 90,092,780 (GRCm39) T1245A probably damaging Het
Or10ad1b C T 15: 98,125,085 (GRCm39) C147Y probably damaging Het
Or5b121 A G 19: 13,507,613 (GRCm39) Y236C probably damaging Het
Pcif1 G A 2: 164,727,878 (GRCm39) G189D probably benign Het
Pdzd2 A G 15: 12,375,594 (GRCm39) S1514P probably damaging Het
Pigu A T 2: 155,141,063 (GRCm39) F276I probably damaging Het
Pramex1 T C X: 134,514,194 (GRCm39) H365R probably benign Het
Psmd9 C T 5: 123,372,653 (GRCm39) probably benign Het
Rasgrp2 A T 19: 6,463,920 (GRCm39) Q539H probably benign Het
Rgs22 T G 15: 36,107,051 (GRCm39) I112L possibly damaging Het
Slc26a9 A T 1: 131,696,969 (GRCm39) T786S probably benign Het
Sned1 A G 1: 93,192,752 (GRCm39) probably benign Het
St7l G A 3: 104,833,763 (GRCm39) V475I probably damaging Het
Tnfrsf11a C T 1: 105,737,085 (GRCm39) T64I probably damaging Het
Top3a A G 11: 60,634,765 (GRCm39) V713A possibly damaging Het
Trim16 G A 11: 62,731,433 (GRCm39) G348S probably damaging Het
Tshz3 C T 7: 36,470,962 (GRCm39) Q984* probably null Het
Ttn A G 2: 76,566,406 (GRCm39) probably null Het
Ubfd1 T A 7: 121,667,999 (GRCm39) probably benign Het
Zfp37 A T 4: 62,109,572 (GRCm39) Y497* probably null Het
Zfp462 G A 4: 55,060,095 (GRCm39) C1207Y probably damaging Het
Zfp607b A G 7: 27,403,476 (GRCm39) E644G possibly damaging Het
Other mutations in Cyp46a1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01622:Cyp46a1 APN 12 108,318,234 (GRCm39) missense possibly damaging 0.78
IGL01623:Cyp46a1 APN 12 108,318,234 (GRCm39) missense possibly damaging 0.78
IGL01804:Cyp46a1 APN 12 108,321,745 (GRCm39) missense probably benign 0.44
IGL02069:Cyp46a1 APN 12 108,312,394 (GRCm39) missense probably benign 0.18
IGL02900:Cyp46a1 APN 12 108,309,350 (GRCm39) missense probably damaging 1.00
IGL02969:Cyp46a1 APN 12 108,309,296 (GRCm39) missense probably damaging 1.00
PIT4651001:Cyp46a1 UTSW 12 108,319,367 (GRCm39) missense probably benign 0.17
R0138:Cyp46a1 UTSW 12 108,317,470 (GRCm39) missense probably damaging 1.00
R1572:Cyp46a1 UTSW 12 108,318,198 (GRCm39) missense probably null 0.97
R1879:Cyp46a1 UTSW 12 108,319,385 (GRCm39) missense probably damaging 1.00
R2280:Cyp46a1 UTSW 12 108,321,730 (GRCm39) missense probably damaging 1.00
R4674:Cyp46a1 UTSW 12 108,324,345 (GRCm39) missense probably damaging 1.00
R4717:Cyp46a1 UTSW 12 108,318,285 (GRCm39) critical splice donor site probably null
R6224:Cyp46a1 UTSW 12 108,327,819 (GRCm39) missense probably damaging 1.00
R6473:Cyp46a1 UTSW 12 108,321,734 (GRCm39) missense possibly damaging 0.87
R6539:Cyp46a1 UTSW 12 108,319,416 (GRCm39) splice site probably null
R7253:Cyp46a1 UTSW 12 108,318,255 (GRCm39) missense probably benign 0.16
R8208:Cyp46a1 UTSW 12 108,318,171 (GRCm39) critical splice acceptor site probably null
R8805:Cyp46a1 UTSW 12 108,327,462 (GRCm39) missense probably damaging 1.00
R8951:Cyp46a1 UTSW 12 108,312,348 (GRCm39) missense possibly damaging 0.90
R8992:Cyp46a1 UTSW 12 108,324,366 (GRCm39) missense possibly damaging 0.91
Predicted Primers PCR Primer
(F):5'- GATGTTCTGGGAATCTGGCC -3'
(R):5'- CTAAGCCTTGGCTGGATGTG -3'

Sequencing Primer
(F):5'- AATCTGGCCCGTCCTGG -3'
(R):5'- CCTTGGCTGGATGTGTGAAG -3'
Posted On 2015-04-17