Description:
TAY-SACHS DISEASE; TSD
HEXOSAMINIDASE A; HEXA
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Repository
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NIGMS Human Genetic Cell Repository
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| Subcollection |
Heritable Diseases
Lysosomal Storage Diseases |
| Class |
Disorders of Lipid Metabolism |
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Cell Type
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Fibroblast
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Transformant
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Untransformed
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Race
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White
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Family Member
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1
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Relation to Proband
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proband
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Confirmation
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Clinical summary/Case history
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Species
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Homo sapiens
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Common Name
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Human
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Remarks
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| Passage Frozen |
3 |
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| beta-N-acetylhexosaminidase (hexosaminidase A) |
According to the submitter, biochemical test results for this subject showed decreased enzyme activity. EC Number: 3.2.1.52 |
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| Gene |
HEXA |
| Chromosomal Location |
15q23-q24 |
| Allelic Variant 1 |
606869.0012; TAY-SACHS DISEASE |
| Identified Mutation |
TRP420CYS; This mutation results from a single nucleotide transversion in exon 11: G1260-to-C; trp420-to-cys. |
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| Gene |
HEXA |
| Chromosomal Location |
15q23-q24 |
| Allelic Variant 2 |
; TAY-SACHS DISEASE |
| Identified Mutation |
IVS11+1G>C |
| Remarks |
Deficient hexosaminidase A; normal-sized B-hexosaminidase alpha subunit mRNA; compound heterozygote: 1 allele has a single nucleotide transversion at nucleotide 1260 in exon 11 of the HEXA gene (c.1260G>C) resulting in the substitution of cysteine for tryptophan at codon 420 [Trp420Cys (W420C)]; the other allele has an IVS11+1G>C (c.1330+1G>C) |
| Hyun JY, Kim S, Lee HS, Shin I, A Glycoengineered Enzyme with Multiple Mannose-6-Phosphates Is Internalized into Diseased Cells to Restore Its Activity in Lysosomes Cell chemical biology25:1255-1267.e8 2018 |
| PubMed ID: 30146240 |
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| Tanaka A, Punnett HH, Suzuki K, A new point mutation in the beta-hexosaminidase alpha subunit gene responsible for infantile Tay-Sachs disease in a non-Jewish Caucasian patient (a Kpn mutant). Am J Hum Genet47:568-74 1990 |
| PubMed ID: 2144098 |
| dbSNP |
dbSNP ID: 22074 |
| Gene Cards |
HEXA |
| Gene Ontology |
GO:0004563 beta-N-acetylhexosaminidase activity |
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GO:0005764 lysosome |
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GO:0005975 carbohydrate metabolism |
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GO:0006687 glycosphingolipid metabolism |
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GO:0016798 hydrolase activity, acting on glycosyl bonds |
| NCBI Gene |
Gene ID:3073 |
| NCBI GTR |
272800 TAY-SACHS DISEASE; TSD |
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606869 HEXOSAMINIDASE A; HEXA |
| OMIM |
272800 TAY-SACHS DISEASE; TSD |
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606869 HEXOSAMINIDASE A; HEXA |
| Omim Description |
B VARIANT GM2 GANGLIOSIDOSIS |
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GM2-GANGLIOSIDOSIS, ADULT CHRONIC TYPE, INCLUDED |
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GM2-GANGLIOSIDOSIS, TYPE I |
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HEXA DEFICIENCYHEXOSAMINIDASE A, INCLUDED; HEXA, INCLUDED |
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HEXOSAMINIDASE A DEFICIENCY |
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HEXOSAMINIDASE A DEFICIENCY, ADULT TYPE, INCLUDED |
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TAY-SACHS DISEASE, JUVENILE, INCLUDED |
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TAY-SACHS DISEASE, PSEUDO-AB VARIANT, INCLUDED |
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TAY-SACHS DISEASE, VARIANT B1, INCLUDED |
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TAY-SACHS DISEASE; TSD |
| Passage Frozen |
3 |
| Split Ratio |
1:3 |
| Temperature |
37 C |
| Percent CO2 |
5% |
| Medium |
Eagle's Minimum Essential Medium with Earle's salts and non-essential amino acids with 2mM L-glutamine or equivalent |
| Serum |
15% fetal bovine serum Not inactivated |
| Substrate |
None specified |
| Subcultivation Method |
trypsin-EDTA |
| Supplement |
- |
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