Incidental Mutation 'R6331:Htt'
ID510906
Institutional Source Beutler Lab
Gene Symbol Htt
Ensembl Gene ENSMUSG00000029104
Gene Namehuntingtin
SynonymsHD, Hdh, htt, huntingtin, IT15
MMRRC Submission
Accession Numbers
Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R6331 (G1)
Quality Score225.009
Status Validated
Chromosome5
Chromosomal Location34761740-34912534 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to A at 34895887 bp
ZygosityHeterozygous
Amino Acid Change Phenylalanine to Leucine at position 2521 (F2521L)
Ref Sequence ENSEMBL: ENSMUSP00000078945 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000080036]
Predicted Effect possibly damaging
Transcript: ENSMUST00000080036
AA Change: F2521L

PolyPhen 2 Score 0.895 (Sensitivity: 0.82; Specificity: 0.94)
SMART Domains Protein: ENSMUSP00000078945
Gene: ENSMUSG00000029104
AA Change: F2521L

DomainStartEndE-ValueType
low complexity region 18 65 N/A INTRINSIC
SCOP:d1qgra_ 92 370 1e-12 SMART
low complexity region 371 388 N/A INTRINSIC
low complexity region 432 453 N/A INTRINSIC
low complexity region 1150 1161 N/A INTRINSIC
low complexity region 1423 1441 N/A INTRINSIC
Pfam:DUF3652 1494 1534 9.3e-20 PFAM
low complexity region 1812 1822 N/A INTRINSIC
Blast:GAF 1866 2040 1e-104 BLAST
low complexity region 2461 2472 N/A INTRINSIC
low complexity region 2611 2621 N/A INTRINSIC
low complexity region 2622 2635 N/A INTRINSIC
low complexity region 2857 2872 N/A INTRINSIC
Predicted Effect noncoding transcript
Transcript: ENSMUST00000124272
Meta Mutation Damage Score 0.0988 question?
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.3%
  • 20x: 97.8%
Validation Efficiency 100% (66/66)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Huntingtin is a disease gene linked to Huntington's disease, a neurodegenerative disorder characterized by loss of striatal neurons. This is thought to be caused by an expanded, unstable trinucleotide repeat in the huntingtin gene, which translates as a polyglutamine repeat in the protein product. A fairly broad range of trinucleotide repeats (9-35) has been identified in normal controls, and repeat numbers in excess of 40 have been described as pathological. The huntingtin locus is large, spanning 180 kb and consisting of 67 exons. The huntingtin gene is widely expressed and is required for normal development. It is expressed as 2 alternatively polyadenylated forms displaying different relative abundance in various fetal and adult tissues. The larger transcript is approximately 13.7 kb and is expressed predominantly in adult and fetal brain whereas the smaller transcript of approximately 10.3 kb is more widely expressed. The genetic defect leading to Huntington's disease may not necessarily eliminate transcription, but may confer a new property on the mRNA or alter the function of the protein. One candidate is the huntingtin-associated protein-1, highly expressed in brain, which has increased affinity for huntingtin protein with expanded polyglutamine repeats. This gene contains an upstream open reading frame in the 5' UTR that inhibits expression of the huntingtin gene product through translational repression. [provided by RefSeq, Jul 2016]
PHENOTYPE: Null mutants gastrulate abnormally and die in utero. Conditional mutants are small with progressive neurodegeneration. Knock-ins of 20-150 CAG repeat units variably mimic Huntington's with late-onset motor defects, reactive gliosis and neuronal inclusions. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 66 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
3110002H16Rik G A 18: 12,180,514 R228H probably damaging Het
9930021J03Rik C T 19: 29,717,747 V1449I probably benign Het
A2ml1 T C 6: 128,552,236 D981G probably damaging Het
Abcc1 C A 16: 14,465,056 A1132D probably damaging Het
Adamts12 A G 15: 11,241,433 T364A probably damaging Het
Ahnak A T 19: 9,006,625 M1758L probably benign Het
Ak9 T C 10: 41,382,829 V774A probably damaging Het
Ash1l A G 3: 89,007,865 E1934G probably benign Het
Atp2b2 C T 6: 113,797,131 A341T probably benign Het
Bach2 G T 4: 32,238,816 probably benign Het
Ccdc102a T C 8: 94,911,516 T241A probably benign Het
Chd5 G T 4: 152,382,408 R1627S probably benign Het
Clint1 T C 11: 45,895,081 S322P probably benign Het
Dapk1 T A 13: 60,729,442 C498* probably null Het
Diaph3 T G 14: 86,866,540 S803R probably damaging Het
Dmp1 T C 5: 104,207,125 L10P probably damaging Het
Gcc2 T C 10: 58,271,465 V741A probably benign Het
Gldn A G 9: 54,286,878 M119V probably benign Het
Gucy1b1 A G 3: 82,034,411 S574P possibly damaging Het
Hapln4 T A 8: 70,084,423 probably benign Het
Hars A G 18: 36,771,332 V209A probably benign Het
Kif14 A G 1: 136,515,986 D1299G probably null Het
Krt25 T A 11: 99,317,427 E325V probably damaging Het
Lcmt1 T C 7: 123,378,182 probably benign Het
Lrp1b A T 2: 40,803,209 N3266K probably damaging Het
Marc2 A G 1: 184,819,328 S304P probably damaging Het
Mctp1 T A 13: 77,020,863 probably null Het
Myo5b G A 18: 74,616,993 A176T probably damaging Het
Myom3 A G 4: 135,776,377 N379S possibly damaging Het
Nbea A T 3: 56,000,616 D1358E possibly damaging Het
Nod1 T C 6: 54,924,983 E939G probably damaging Het
Obox1 A G 7: 15,555,369 R70G probably benign Het
Olfr1024 T C 2: 85,904,216 I279M probably benign Het
Olfr1239 C T 2: 89,418,351 G21S probably benign Het
Olfr1341 A G 4: 118,709,947 E180G probably benign Het
Olfr272 A G 4: 52,911,399 Y132H probably damaging Het
Otof T C 5: 30,371,935 D1745G possibly damaging Het
Pklr A G 3: 89,137,355 I47V probably damaging Het
Pms2 T A 5: 143,914,633 S123T possibly damaging Het
Pnpla2 T C 7: 141,459,285 S337P probably damaging Het
Ptgfrn A C 3: 101,045,620 V766G possibly damaging Het
Ptpn11 T A 5: 121,144,653 H419L probably damaging Het
Rims3 T A 4: 120,883,153 V99E probably damaging Het
Samd9l A G 6: 3,376,361 V300A probably damaging Het
Sdad1 T C 5: 92,303,930 D144G probably damaging Het
Siglecg T C 7: 43,408,754 Y22H possibly damaging Het
Slc39a1 A G 3: 90,252,281 K305R possibly damaging Het
Slc5a4a A G 10: 76,178,200 R414G probably damaging Het
Smg1 T C 7: 118,154,277 probably benign Het
Tbc1d9b C T 11: 50,131,497 A20V possibly damaging Het
Tgfb3 G T 12: 86,063,864 D237E probably benign Het
Tle6 A G 10: 81,595,239 S234P probably benign Het
Tnrc6b A G 15: 80,879,614 N439S probably benign Het
Trim33 T C 3: 103,341,609 S783P probably benign Het
Ttn A T 2: 76,802,354 Y12373N probably damaging Het
Tube1 G A 10: 39,134,101 V7I probably benign Het
Tufm T C 7: 126,489,238 V265A probably benign Het
Uhrf1bp1 T C 17: 27,893,201 I1150T probably benign Het
Usp32 T C 11: 84,986,576 H1550R possibly damaging Het
Usp33 A T 3: 152,376,250 M546L probably damaging Het
Uspl1 C A 5: 149,214,287 Q752K probably benign Het
Vmn1r20 A G 6: 57,431,670 probably null Het
Vmn1r201 T C 13: 22,475,351 F245S probably damaging Het
Vmn2r3 A G 3: 64,278,761 S168P probably damaging Het
Wdr24 T G 17: 25,825,676 D168E possibly damaging Het
Zfp646 C T 7: 127,883,681 P1677S probably damaging Het
Other mutations in Htt
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00230:Htt APN 5 34799408 missense probably benign 0.00
IGL00233:Htt APN 5 34896026 splice site probably null
IGL00559:Htt APN 5 34849104 splice site probably benign
IGL00765:Htt APN 5 34877425 splice site probably benign
IGL00950:Htt APN 5 34891441 missense probably benign
IGL00953:Htt APN 5 34818677 missense probably benign 0.04
IGL00957:Htt APN 5 34806724 missense probably benign
IGL01314:Htt APN 5 34878856 missense probably benign
IGL01412:Htt APN 5 34898572 missense probably damaging 0.98
IGL01510:Htt APN 5 34907512 missense probably damaging 1.00
IGL01617:Htt APN 5 34876755 missense possibly damaging 0.67
IGL01893:Htt APN 5 34876830 missense probably damaging 1.00
IGL01914:Htt APN 5 34829709 missense probably benign
IGL01994:Htt APN 5 34832604 missense possibly damaging 0.83
IGL02102:Htt APN 5 34891481 splice site probably benign
IGL02381:Htt APN 5 34829760 missense probably benign 0.03
IGL02529:Htt APN 5 34819043 splice site probably benign
IGL02678:Htt APN 5 34899902 missense probably damaging 1.00
IGL02707:Htt APN 5 34829881 critical splice donor site probably null
IGL02731:Htt APN 5 34803793 missense probably benign 0.41
IGL02931:Htt APN 5 34876753 missense probably damaging 1.00
IGL03167:Htt APN 5 34818986 missense probably damaging 0.98
IGL03343:Htt APN 5 34826041 missense probably benign
IGL03344:Htt APN 5 34907466 missense probably benign 0.02
IGL03344:Htt APN 5 34879828 missense probably benign 0.39
IGL03366:Htt APN 5 34907580 missense probably damaging 1.00
IGL03410:Htt APN 5 34799445 missense probably damaging 0.99
Chalk UTSW 5 34907086 missense possibly damaging 0.86
IGL02796:Htt UTSW 5 34877482 missense probably benign 0.43
PIT4377001:Htt UTSW 5 34875965 missense probably benign 0.10
R0013:Htt UTSW 5 34820104 missense probably benign 0.25
R0049:Htt UTSW 5 34908662 missense probably damaging 0.97
R0049:Htt UTSW 5 34908662 missense probably damaging 0.97
R0056:Htt UTSW 5 34826078 splice site probably benign
R0207:Htt UTSW 5 34896908 missense probably benign 0.11
R0329:Htt UTSW 5 34817134 splice site probably benign
R0494:Htt UTSW 5 34821844 missense possibly damaging 0.73
R0548:Htt UTSW 5 34870746 missense probably damaging 1.00
R0601:Htt UTSW 5 34846003 missense probably benign 0.08
R0799:Htt UTSW 5 34817753 missense probably benign 0.00
R0947:Htt UTSW 5 34898924 missense probably damaging 1.00
R1053:Htt UTSW 5 34851217 critical splice acceptor site probably null
R1147:Htt UTSW 5 34851252 missense probably damaging 0.98
R1147:Htt UTSW 5 34851252 missense probably damaging 0.98
R1478:Htt UTSW 5 34803827 missense probably damaging 0.99
R1573:Htt UTSW 5 34864374 splice site probably benign
R1677:Htt UTSW 5 34828574 missense probably damaging 1.00
R1792:Htt UTSW 5 34907199 missense probably damaging 1.00
R1816:Htt UTSW 5 34803740 missense probably benign 0.01
R1833:Htt UTSW 5 34905748 splice site probably benign
R1837:Htt UTSW 5 34819023 missense probably benign 0.00
R1846:Htt UTSW 5 34848944 missense probably damaging 0.98
R1875:Htt UTSW 5 34794112 missense probably benign 0.05
R1899:Htt UTSW 5 34907085 missense probably benign 0.01
R2013:Htt UTSW 5 34852871 missense probably damaging 0.99
R2062:Htt UTSW 5 34825982 missense probably benign 0.00
R2064:Htt UTSW 5 34825982 missense probably benign 0.00
R2067:Htt UTSW 5 34825982 missense probably benign 0.00
R2068:Htt UTSW 5 34825982 missense probably benign 0.00
R2131:Htt UTSW 5 34877109 missense possibly damaging 0.50
R2162:Htt UTSW 5 34821718 missense probably benign 0.44
R2169:Htt UTSW 5 34877475 missense probably benign 0.08
R2345:Htt UTSW 5 34826004 missense possibly damaging 0.80
R2433:Htt UTSW 5 34907541 missense possibly damaging 0.65
R3027:Htt UTSW 5 34820095 missense possibly damaging 0.85
R3123:Htt UTSW 5 34804531 missense probably benign
R3125:Htt UTSW 5 34804531 missense probably benign
R3717:Htt UTSW 5 34811522 splice site probably benign
R3758:Htt UTSW 5 34895970 missense probably damaging 0.97
R3805:Htt UTSW 5 34877204 splice site probably null
R3833:Htt UTSW 5 34821718 missense probably benign 0.44
R4066:Htt UTSW 5 34878847 missense probably benign
R4272:Htt UTSW 5 34849069 missense possibly damaging 0.96
R4625:Htt UTSW 5 34829785 missense probably damaging 0.99
R4634:Htt UTSW 5 34875948 missense probably benign 0.06
R4655:Htt UTSW 5 34906132 missense probably benign 0.06
R4679:Htt UTSW 5 34820080 missense probably benign
R4684:Htt UTSW 5 34852765 missense probably damaging 1.00
R4832:Htt UTSW 5 34824840 missense probably benign 0.01
R4833:Htt UTSW 5 34852225 missense probably damaging 0.98
R4973:Htt UTSW 5 34813023 missense probably damaging 0.99
R5095:Htt UTSW 5 34824395 missense possibly damaging 0.89
R5132:Htt UTSW 5 34905679 missense possibly damaging 0.89
R5351:Htt UTSW 5 34803833 missense probably damaging 0.99
R5361:Htt UTSW 5 34907584 missense possibly damaging 0.47
R5399:Htt UTSW 5 34877151 missense probably damaging 0.98
R5462:Htt UTSW 5 34885507 nonsense probably null
R5552:Htt UTSW 5 34821774 missense probably benign
R5566:Htt UTSW 5 34849075 missense probably damaging 1.00
R5595:Htt UTSW 5 34905397 missense probably damaging 0.96
R5617:Htt UTSW 5 34870806 missense possibly damaging 0.77
R5835:Htt UTSW 5 34813190 missense probably benign 0.16
R5891:Htt UTSW 5 34870823 missense possibly damaging 0.62
R6158:Htt UTSW 5 34907086 missense possibly damaging 0.86
R6159:Htt UTSW 5 34804676 missense probably benign 0.08
R6169:Htt UTSW 5 34907473 missense probably damaging 1.00
R6242:Htt UTSW 5 34846012 missense probably damaging 1.00
R6274:Htt UTSW 5 34852087 missense possibly damaging 0.81
R6280:Htt UTSW 5 34870759 missense probably benign 0.00
R6294:Htt UTSW 5 34821826 missense probably benign
R6448:Htt UTSW 5 34875992 missense probably benign 0.05
R6474:Htt UTSW 5 34824895 missense probably benign 0.06
R6592:Htt UTSW 5 34877044 missense possibly damaging 0.92
R6818:Htt UTSW 5 34782767 missense probably damaging 0.99
R6830:Htt UTSW 5 34834326 missense possibly damaging 0.82
R6920:Htt UTSW 5 34877100 missense probably null 1.00
R6962:Htt UTSW 5 34899771 critical splice acceptor site probably null
R7057:Htt UTSW 5 34821723 missense probably null 0.05
R7144:Htt UTSW 5 34846006 missense probably damaging 1.00
R7166:Htt UTSW 5 34852894 missense probably benign 0.42
R7329:Htt UTSW 5 34829755 missense probably benign 0.03
R7378:Htt UTSW 5 34803799 missense probably benign 0.04
R7418:Htt UTSW 5 34790353 missense possibly damaging 0.55
R7495:Htt UTSW 5 34811477 missense probably benign 0.00
R7554:Htt UTSW 5 34864740 missense probably damaging 0.97
R7575:Htt UTSW 5 34905643 missense probably damaging 1.00
R7763:Htt UTSW 5 34852190 missense probably damaging 1.00
R7782:Htt UTSW 5 34882992 missense probably benign 0.03
Predicted Primers PCR Primer
(F):5'- ACTTCACTGGGTGTTCTGGC -3'
(R):5'- CATGGTGGTCTAGACGAAGC -3'

Sequencing Primer
(F):5'- ACTGGGTGTTCTGGCTCAGAC -3'
(R):5'- CTTGTGAATGGGGGCAATACACTC -3'
Posted On2018-04-02