Incidental Mutation 'IGL02126:Hexb'
ID 280876
Institutional Source Australian Phenomics Network (link to record)
Gene Symbol Hexb
Ensembl Gene ENSMUSG00000021665
Gene Name hexosaminidase B
Synonyms
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # IGL02126
Quality Score
Status
Chromosome 13
Chromosomal Location 97312839-97334865 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 97314532 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Lysine to Glutamic Acid at position 404 (K404E)
Ref Sequence ENSEMBL: ENSMUSP00000022169 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022169] [ENSMUST00000022170] [ENSMUST00000042084] [ENSMUST00000161639] [ENSMUST00000161825]
AlphaFold P20060
Predicted Effect possibly damaging
Transcript: ENSMUST00000022169
AA Change: K404E

PolyPhen 2 Score 0.934 (Sensitivity: 0.80; Specificity: 0.94)
SMART Domains Protein: ENSMUSP00000022169
Gene: ENSMUSG00000021665
AA Change: K404E

DomainStartEndE-ValueType
signal peptide 1 31 N/A INTRINSIC
Pfam:Glycohydro_20b2 35 157 7.1e-24 PFAM
Pfam:Glyco_hydro_20 179 496 1.2e-94 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000022170
SMART Domains Protein: ENSMUSP00000022170
Gene: ENSMUSG00000021666

DomainStartEndE-ValueType
Pfam:GTP_EFTU 66 349 9.9e-64 PFAM
Pfam:GTP_EFTU_D2 379 446 4.3e-8 PFAM
low complexity region 447 473 N/A INTRINSIC
Pfam:EFG_II 482 556 3.9e-29 PFAM
EFG_IV 558 677 2.94e-17 SMART
EFG_C 679 766 1.9e-20 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000042084
SMART Domains Protein: ENSMUSP00000048373
Gene: ENSMUSG00000021666

DomainStartEndE-ValueType
Pfam:GTP_EFTU 68 324 4.6e-64 PFAM
Pfam:GTP_EFTU_D2 354 421 4.2e-8 PFAM
low complexity region 422 448 N/A INTRINSIC
Pfam:EFG_II 457 531 3.7e-29 PFAM
EFG_IV 533 652 2.94e-17 SMART
EFG_C 654 741 1.9e-20 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000159321
Predicted Effect noncoding transcript
Transcript: ENSMUST00000160989
Predicted Effect probably benign
Transcript: ENSMUST00000161639
SMART Domains Protein: ENSMUSP00000125656
Gene: ENSMUSG00000021666

DomainStartEndE-ValueType
Pfam:GTP_EFTU 68 351 1.2e-68 PFAM
low complexity region 449 475 N/A INTRINSIC
Pfam:EFG_II 484 558 4.5e-30 PFAM
EFG_IV 560 679 2.94e-17 SMART
EFG_C 681 768 1.9e-20 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000161825
SMART Domains Protein: ENSMUSP00000125088
Gene: ENSMUSG00000021666

DomainStartEndE-ValueType
Pfam:GTP_EFTU 68 351 2.3e-64 PFAM
Pfam:GTP_EFTU_D2 381 448 1.1e-8 PFAM
low complexity region 449 475 N/A INTRINSIC
Pfam:EFG_II 484 558 7.1e-30 PFAM
EFG_IV 560 679 2.94e-17 SMART
EFG_C 681 738 3.46e-2 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000161843
Coding Region Coverage
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Hexosaminidase B is the beta subunit of the lysosomal enzyme beta-hexosaminidase that, together with the cofactor GM2 activator protein, catalyzes the degradation of the ganglioside GM2, and other molecules containing terminal N-acetyl hexosamines. Beta-hexosaminidase is composed of two subunits, alpha and beta, which are encoded by separate genes. Both beta-hexosaminidase alpha and beta subunits are members of family 20 of glycosyl hydrolases. Mutations in the alpha or beta subunit genes lead to an accumulation of GM2 ganglioside in neurons and neurodegenerative disorders termed the GM2 gangliosidoses. Beta subunit gene mutations lead to Sandhoff disease (GM2-gangliosidosis type II). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2014]
PHENOTYPE: Homozygous mutants exhibit spasticity, muscle weakness, rigidity, tremors, and ataxia beginning around 4 months of age and resulting in death about 6 weeks later. Mutants accumulate GM2 ganglioside and glycolipid GA2 in brain. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Aldh16a1 G A 7: 44,795,459 (GRCm39) P400L probably damaging Het
Angptl3 T C 4: 98,919,738 (GRCm39) probably null Het
Atoh1 T C 6: 64,706,334 (GRCm39) W10R probably damaging Het
Brd8 C T 18: 34,735,780 (GRCm39) S899N probably damaging Het
Ccm2 A G 11: 6,544,154 (GRCm39) T317A probably damaging Het
Ccnt1 A T 15: 98,465,484 (GRCm39) W12R probably damaging Het
Celf1 T A 2: 90,831,408 (GRCm39) L79H probably damaging Het
Cmip T C 8: 118,175,770 (GRCm39) V423A probably damaging Het
Ddr1 T A 17: 35,999,481 (GRCm39) I431F probably damaging Het
Dnah6 A G 6: 73,080,149 (GRCm39) L2343P probably benign Het
Duox1 A G 2: 122,176,817 (GRCm39) D1446G probably benign Het
Erich3 A G 3: 154,419,599 (GRCm39) H231R possibly damaging Het
Fam221b T A 4: 43,666,450 (GRCm39) I54F probably benign Het
Fcgbpl1 G A 7: 27,839,281 (GRCm39) V365M probably damaging Het
Galntl5 T C 5: 25,394,839 (GRCm39) F69L possibly damaging Het
Gba2 T G 4: 43,567,918 (GRCm39) probably null Het
Gbf1 C A 19: 46,240,556 (GRCm39) P46Q probably damaging Het
Gimap6 T G 6: 48,679,635 (GRCm39) S134R probably damaging Het
Gm5424 A C 10: 61,907,377 (GRCm39) noncoding transcript Het
Hs3st3a1 G A 11: 64,327,331 (GRCm39) V147M probably damaging Het
Hsd17b4 T C 18: 50,315,063 (GRCm39) V610A probably benign Het
Loxl3 T A 6: 83,025,628 (GRCm39) W329R probably damaging Het
Lrrc52 A G 1: 167,273,575 (GRCm39) F247S probably damaging Het
Naa38 C T 11: 69,287,045 (GRCm39) R42W probably damaging Het
Nadsyn1 G A 7: 143,357,753 (GRCm39) Q485* probably null Het
Nid1 A G 13: 13,663,743 (GRCm39) probably null Het
Ofcc1 T C 13: 40,362,251 (GRCm39) T224A probably benign Het
Or5m11b T G 2: 85,806,517 (GRCm39) I310S probably benign Het
Palld A G 8: 62,330,476 (GRCm39) Y134H possibly damaging Het
Pfkfb4 C T 9: 108,854,178 (GRCm39) R351W probably damaging Het
Pfn3 T C 13: 55,562,699 (GRCm39) D94G possibly damaging Het
Pkhd1 G A 1: 20,187,419 (GRCm39) R3630C probably damaging Het
Por T A 5: 135,744,829 (GRCm39) F31I probably benign Het
Ppp1r12c T C 7: 4,492,858 (GRCm39) E127G probably benign Het
Ppp1r9a T A 6: 5,156,229 (GRCm39) S1162T probably damaging Het
Psen2 C A 1: 180,057,488 (GRCm39) A297S probably benign Het
Rpusd2 G A 2: 118,869,119 (GRCm39) R514Q probably damaging Het
Rxrg A G 1: 167,462,029 (GRCm39) M235V probably damaging Het
Sash1 T C 10: 8,615,229 (GRCm39) M644V probably damaging Het
Sf3b3 T C 8: 111,550,075 (GRCm39) T648A probably benign Het
Slco1a7 T A 6: 141,684,739 (GRCm39) T239S probably benign Het
Ssu72 T C 4: 155,816,483 (GRCm39) I155T probably benign Het
Tas2r102 A G 6: 132,739,607 (GRCm39) R172G probably damaging Het
Tmem214 G A 5: 31,030,090 (GRCm39) A296T probably benign Het
Trav12-2 C A 14: 53,853,859 (GRCm39) N2K probably damaging Het
Tyrp1 C T 4: 80,755,845 (GRCm39) Q205* probably null Het
Ubr4 T A 4: 139,180,052 (GRCm39) probably null Het
Ush2a A G 1: 187,995,588 (GRCm39) S120G probably benign Het
Vmn2r100 T C 17: 19,741,504 (GRCm39) probably benign Het
Zer1 G T 2: 29,994,928 (GRCm39) T489K probably benign Het
Zfp955b G T 17: 33,521,238 (GRCm39) G236* probably null Het
Other mutations in Hexb
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00509:Hexb APN 13 97,318,437 (GRCm39) missense probably damaging 1.00
IGL02010:Hexb APN 13 97,313,353 (GRCm39) missense probably benign 0.01
IGL02303:Hexb APN 13 97,313,401 (GRCm39) missense probably damaging 1.00
IGL02955:Hexb APN 13 97,317,584 (GRCm39) utr 3 prime probably benign
IGL02988:Hexb UTSW 13 97,334,729 (GRCm39) missense unknown
R0311:Hexb UTSW 13 97,320,327 (GRCm39) unclassified probably benign
R0470:Hexb UTSW 13 97,314,507 (GRCm39) missense probably damaging 0.97
R0520:Hexb UTSW 13 97,317,618 (GRCm39) missense probably benign 0.00
R0893:Hexb UTSW 13 97,322,135 (GRCm39) missense probably benign 0.02
R1869:Hexb UTSW 13 97,327,767 (GRCm39) missense probably benign
R2295:Hexb UTSW 13 97,322,120 (GRCm39) missense probably damaging 1.00
R2884:Hexb UTSW 13 97,320,208 (GRCm39) missense probably damaging 1.00
R4237:Hexb UTSW 13 97,313,259 (GRCm39) intron probably benign
R4238:Hexb UTSW 13 97,313,259 (GRCm39) intron probably benign
R4239:Hexb UTSW 13 97,313,259 (GRCm39) intron probably benign
R4689:Hexb UTSW 13 97,317,600 (GRCm39) missense probably damaging 1.00
R5166:Hexb UTSW 13 97,318,512 (GRCm39) missense probably benign 0.13
R6665:Hexb UTSW 13 97,315,893 (GRCm39) missense probably benign 0.01
R7379:Hexb UTSW 13 97,317,672 (GRCm39) missense probably damaging 1.00
R7553:Hexb UTSW 13 97,334,681 (GRCm39) missense probably benign 0.01
R8307:Hexb UTSW 13 97,330,707 (GRCm39) missense probably benign 0.02
R8830:Hexb UTSW 13 97,330,762 (GRCm39) missense probably benign
R8980:Hexb UTSW 13 97,330,689 (GRCm39) missense probably damaging 0.99
R9144:Hexb UTSW 13 97,317,599 (GRCm39) missense probably damaging 1.00
R9155:Hexb UTSW 13 97,314,414 (GRCm39) missense probably damaging 1.00
R9186:Hexb UTSW 13 97,325,836 (GRCm39) missense probably damaging 1.00
R9393:Hexb UTSW 13 97,313,336 (GRCm39) nonsense probably null
R9546:Hexb UTSW 13 97,322,176 (GRCm39) missense probably damaging 1.00
Posted On 2015-04-16