Mutagenetix > Incidental Mutation

Incidental Mutation 'R7553:Hexb'

584572

Institutional Source

Beutler Lab

Gene Symbol

Hexb

Ensembl Gene

ENSMUSG00000021665

Gene Name

hexosaminidase B

Synonyms

MMRRC Submission

045622-MU

Accession Numbers

Essential gene?

Non essential (E-score: 0.000) question?

Stock #

R7553 (G1)

Quality Score

225.009

Status

Validated

Chromosome

Chromosomal Location

97312839-97334865 bp(-) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

C to T at 97334681 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Arginine to Glutamine at position 30 (R30Q)

Ref Sequence

ENSEMBL: ENSMUSP00000022169 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000022169]

AlphaFold

P20060

Predicted Effect

probably benign
Transcript: ENSMUST00000022169
AA Change: R30Q

PolyPhen 2 Score 0.015 (Sensitivity: 0.96; Specificity: 0.79)

SMART Domains

Protein: ENSMUSP00000022169
Gene: ENSMUSG00000021665
AA Change: R30Q

Domain	Start	End	E-Value	Type
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

Coding Region Coverage

1x: 100.0%
3x: 99.9%
10x: 99.7%
20x: 99.1%

Validation Efficiency

98% (62/63)

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: 66 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Abcc6	A	G	7: 45,648,545 (GRCm39)	L649P	probably damaging	Het
Acad10	T	C	5: 121,777,318 (GRCm39)	Y371C	probably damaging	Het
Avp	A	G	2: 130,423,098 (GRCm39)	V71A	probably damaging	Het
Bhmt	C	T	13: 93,756,589 (GRCm39)		probably null	Het
Capn15	T	C	17: 26,179,738 (GRCm39)	E874G	probably damaging	Het
Capn5	A	G	7: 97,773,231 (GRCm39)	F591S	probably damaging	Het
Ccne2	A	T	4: 11,201,348 (GRCm39)	Q292L	probably benign	Het
Cd96	T	G	16: 45,872,384 (GRCm39)	T406P	probably damaging	Het
Csnk1e	G	A	15: 79,310,566 (GRCm39)	A153V	probably damaging	Het
Dlk1	G	A	12: 109,420,889 (GRCm39)	V15I	unknown	Het
Dmbt1	A	G	7: 130,706,597 (GRCm39)	N1372S	unknown	Het
Dntt	A	T	19: 41,017,926 (GRCm39)	R17W	probably damaging	Het
Erich3	G	T	3: 154,439,137 (GRCm39)	A260S	probably benign	Het
Foxp2	C	T	6: 15,437,881 (GRCm39)	S669L	unknown	Het
Gm40460	ACCCCCACAGGAGCCACAGCCTCCCTTGCAGCCCCCACAGGAGCCACAGCCTCCCTTGCAGCCCCCACAGGAGCCACAGCCTCCCTTGCAGCCCCCACAGGAGCCACAGCCTCCCTTGCAGCCCCCACAGGAACTACAGCCTCCCTTGCAGCCCCCACAGGAACTACAGCCTCCCTTGCAGCCCCCACAGGAACTACAGCCTCCCTTGCAGCCCCCACAG	ACCCCCACAGGAGCCACAGCCTCCCTTGCAGCCCCCACAGGAGCCACAGCCTCCCTTGCAGCCCCCACAGGAGCCACAGCCTCCCTTGCAGCCCCCACAGGAACTACAGCCTCCCTTGCAGCCCCCACAGGAACTACAGCCTCCCTTGCAGCCCCCACAGGAACTACAGCCTCCCTTGCAGCCCCCACAG	7: 141,794,450 (GRCm39)		probably benign	Het
Grid2	A	G	6: 64,053,925 (GRCm39)	K375E	possibly damaging	Het
Grin2b	C	T	6: 135,749,394 (GRCm39)	G603S	possibly damaging	Het
Homer3	A	T	8: 70,742,774 (GRCm39)	T162S	probably benign	Het
L3mbtl1	A	G	2: 162,790,151 (GRCm39)	E15G	probably benign	Het
Manea	A	T	4: 26,327,986 (GRCm39)	F352I	probably damaging	Het
Mcf2l	T	A	8: 13,047,268 (GRCm39)	M210K	probably benign	Het
Morc3	T	C	16: 93,667,824 (GRCm39)	L734P	probably damaging	Het
Mybpc2	A	G	7: 44,155,571 (GRCm39)	V894A	possibly damaging	Het
Myh4	T	A	11: 67,147,221 (GRCm39)	M1622K	probably damaging	Het
Myrf	A	G	19: 10,206,240 (GRCm39)	F59L	probably benign	Het
Ndst3	G	T	3: 123,350,709 (GRCm39)		probably null	Het
Nln	TGGTCCAGGTAAAACTGCCCCAGCCAATCAGGTACCTTGGATAGAGGTCCAGGTAAAACTGCCCCAGCCAATCAGGTACCTTGGATAGAGGTCCAGGTAGAACTGCCCCAGC	TGGTCCAGGTAAAACTGCCCCAGCCAATCAGGTACCTTGGATAGAGGTCCAGGTAGAACTGCCCCAGC	13: 104,186,924 (GRCm39)		probably null	Het
Nos3	A	T	5: 24,586,715 (GRCm39)	D986V	possibly damaging	Het
Nrp1	G	A	8: 129,158,468 (GRCm39)	A252T	probably damaging	Het
Nup205	G	T	6: 35,178,934 (GRCm39)	R668L	probably damaging	Het
Or51aa2	T	C	7: 103,188,363 (GRCm39)	Y26C	probably damaging	Het
Or5af2	T	A	11: 58,707,886 (GRCm39)	D17E	probably benign	Het
Or5p56	G	A	7: 107,589,682 (GRCm39)	V37I	probably benign	Het
Pcdhga1	T	A	18: 37,882,735 (GRCm39)		probably null	Het
Pck1	A	G	2: 172,998,860 (GRCm39)	I373V	probably benign	Het
Pde8b	T	C	13: 95,223,258 (GRCm39)	N227S	probably benign	Het
Pianp	T	G	6: 124,976,214 (GRCm39)	S8A	unknown	Het
Pkd1l3	GACACCTGCATCCAGCAGCCCAACAAACATGACATCAGACACACCTGCATCCAGCAGCCCAACAAACATGACATCAGACACACCTGCATCCAGCAGCCCAACAAACATGACATCAGACACACCTGCATCCAGCAGCCCA	GACACCTGCATCCAGCAGCCCAACAAACATGACATCAGACACACCTGCATCCAGCAGCCCAACAAACATGACATCAGACACACCTGCATCCAGCAGCCCA	8: 110,350,827 (GRCm39)		probably benign	Het
Pla2r1	A	T	2: 60,353,243 (GRCm39)	N239K	possibly damaging	Het
Pls1	T	A	9: 95,669,140 (GRCm39)	N27I	probably damaging	Het
Prep	T	C	10: 45,034,620 (GRCm39)	*711Q	probably null	Het
Prkag3	A	G	1: 74,783,894 (GRCm39)	F330L	probably damaging	Het
Prss56	A	G	1: 87,111,261 (GRCm39)	D16G	probably benign	Het
Rad17	A	T	13: 100,769,794 (GRCm39)	F255Y	probably damaging	Het
Rap1gap2	T	C	11: 74,326,548 (GRCm39)	E173G	probably damaging	Het
Retreg3	C	T	11: 100,997,216 (GRCm39)	R88H	possibly damaging	Het
Rhag	G	A	17: 41,139,286 (GRCm39)	G74R	probably damaging	Het
Rybp	A	G	6: 100,209,220 (GRCm39)	S201P	possibly damaging	Het
S100a10	G	A	3: 93,471,602 (GRCm39)	C62Y	probably benign	Het
Scgb2b3	T	A	7: 31,059,673 (GRCm39)	S34C	possibly damaging	Het
Serpind1	A	G	16: 17,154,539 (GRCm39)	D122G	probably benign	Het
Setdb1	A	G	3: 95,254,076 (GRCm39)	L242P	probably damaging	Het
Slc14a2	T	A	18: 78,198,803 (GRCm39)	I776F	probably damaging	Het
Slc9a1	A	G	4: 133,139,580 (GRCm39)	E266G	probably damaging	Het
Stard9	A	T	2: 120,524,289 (GRCm39)		probably null	Het
Stpg2	A	G	3: 138,924,098 (GRCm39)	Y167C	probably damaging	Het
Tex264	T	C	9: 106,536,335 (GRCm39)	E274G	probably damaging	Het
Tigd2	G	A	6: 59,188,564 (GRCm39)	S477N	probably benign	Het
Urb1	A	G	16: 90,589,752 (GRCm39)	L343P	probably damaging	Het
Vars2	A	T	17: 35,975,680 (GRCm39)	C246S	possibly damaging	Het
Vil1	G	A	1: 74,465,891 (GRCm39)		probably null	Het
Vmn2r61	C	G	7: 41,916,205 (GRCm39)	L273V	not run	Het
Vmn2r-ps158	T	G	7: 42,697,447 (GRCm39)	C835G	probably damaging	Het
Zfp37	C	A	4: 62,110,236 (GRCm39)	G317V	probably damaging	Het
Zfp760	A	G	17: 21,941,872 (GRCm39)	K349R	possibly damaging	Het
Zyx	A	T	6: 42,327,408 (GRCm39)	E69V	probably null	Het

Other mutations in Hexb

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH 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
IGL02126:Hexb	APN	13	97,314,532 (GRCm39)	missense	possibly damaging	0.93
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
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

Predicted Primers

PCR Primer
(F):5'- AGTCCTGTGAGACCCAAGTAGC -3'
(R):5'- GGTCATCTGACTTGGTGACC -3'

Sequencing Primer
(F):5'- AAGTAGCCCGGCGATCCTTC -3'
(R):5'- ACTTGGTGACCCGGGCAC -3'

Posted On

2019-10-17