AlphaFold predicted structure
HEXB · P07686

Mean pLDDT
92.8/ 100
Very high
556 residues
Confidence breakdown
- Very high(≥ 90)84%
- Confident(70–90)7%
- Low(50–70)6%
- Very low(< 50)3%
AlphaFold (Jumper et al., 2021) · CC BY 4.0
hexosaminidase subunit beta
Annotations refreshed 1 month ago.
Diagnostic Grade (Green)
Adult onset neurodegenerative disorder
BIALLELIC, autosomal or pseudoautosomalAtaxia and cerebellar anomalies - narrow panel
BIALLELIC, autosomal or pseudoautosomalDDG2P
BIALLELIC, autosomal or pseudoautosomalEarly onset or syndromic epilepsy
BIALLELIC, autosomal or pseudoautosomalHereditary ataxia
BIALLELIC, autosomal or pseudoautosomalHereditary ataxia with onset in adulthood
BIALLELIC, autosomal or pseudoautosomalHereditary neuropathy or pain disorder
BIALLELIC, autosomal or pseudoautosomalIntellectual disability
BIALLELIC, autosomal or pseudoautosomal+6 more panels — install the extension to see the full list inline on any page.
Sandhoff disease
Sandhoff disease, infantile form
Sandhoff disease, adult form
Sandhoff disease, juvenile form
hereditary disease
GM2 gangliosidosis
neurodegenerative disease
Parkinson disease
Alzheimer disease
multiple sclerosis
Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.
Beta-hexosaminidase subunit beta
Hydrolyzes the non-reducing end N-acetyl-D-hexosamine and/or sulfated N-acetyl-D-hexosamine of glycoconjugates, such as the oligosaccharide moieties from proteins and neutral glycolipids, or from certain mucopolysaccharides (PubMed:11707436, PubMed:8123671, PubMed:8672428, PubMed:9694901). The isozyme B does not hydrolyze each of these substrates, however hydrolyzes efficiently neutral oligosaccharide (PubMed:11707436). Only the isozyme A is responsible for the degradation of GM2 gangliosides in the presence of GM2A (PubMed:8123671, PubMed:8672428, PubMed:9694901). During fertilization is responsible, at least in part, for the zona block to polyspermy. Present in the cortical granules of non-activated oocytes, is exocytosed during the cortical reaction in response to oocyte activation and inactivates the sperm galactosyltransferase-binding site, accounting for the block in sperm binding to the zona pellucida (By similarity)
HEXB · P07686

Mean pLDDT
92.8/ 100
Very high
556 residues
Confidence breakdown
AlphaFold (Jumper et al., 2021) · CC BY 4.0