Gene Gene information from NCBI Gene database.
Entrez ID 3074
Gene name Hexosaminidase subunit beta
Gene symbol HEXB
Synonyms (NCBI Gene)
ENC-1ASHEL-248HEL-S-111
Chromosome 5
Chromosome location 5q13.3
Summary 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-h
SNPs SNP information provided by dbSNP.
57
SNP ID Visualize variation Clinical significance Consequence
rs820878 T>C Pathogenic, benign Coding sequence variant, intron variant, missense variant
rs5030731 G>A,C Pathogenic-likely-pathogenic, pathogenic Intron variant
rs28942073 C>T Pathogenic Coding sequence variant, missense variant
rs121907982 A>C Pathogenic, uncertain-significance Coding sequence variant, missense variant
rs121907983 G>A Pathogenic, likely-pathogenic Coding sequence variant, missense variant
miRNA miRNA information provided by mirtarbase database.
16
miRTarBase ID miRNA Experiments Reference
MIRT030011 hsa-miR-26b-5p Microarray 19088304
MIRT1044696 hsa-miR-132 CLIP-seq
MIRT1044697 hsa-miR-142-5p CLIP-seq
MIRT1044698 hsa-miR-212 CLIP-seq
MIRT1044699 hsa-miR-219-5p CLIP-seq
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
74
GO ID Ontology Definition Evidence Reference
GO:0001501 Process Skeletal system development IEA
GO:0001669 Component Acrosomal vesicle IEA
GO:0004553 Function Hydrolase activity, hydrolyzing O-glycosyl compounds IEA
GO:0004563 Function Beta-N-acetylhexosaminidase activity IBA
GO:0004563 Function Beta-N-acetylhexosaminidase activity IDA 8123671, 8672428
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
606873 4879 ENSG00000049860
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P07686
Protein name Beta-hexosaminidase subunit beta (EC 3.2.1.52) (Beta-N-acetylhexosaminidase subunit beta) (Hexosaminidase subunit B) (Cervical cancer proto-oncogene 7 protein) (HCC-7) (N-acetyl-beta-glucosaminidase subunit beta) [Cleaved into: Beta-hexosaminidase subunit
Protein function 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, Pub
PDB 1NOU , 1NOW , 1NP0 , 1O7A , 2GJX , 2GK1 , 3LMY , 5BRO
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF14845 Glycohydro_20b2 56 178 beta-acetyl hexosaminidase like Domain
PF00728 Glyco_hydro_20 200 517 Glycosyl hydrolase family 20, catalytic domain Domain
Sequence
Sequence length 556
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Other glycan degradation
Various types of N-glycan biosynthesis
Amino sugar and nucleotide sugar metabolism
Glycosaminoglycan degradation
Sphingolipid metabolism
Glycosphingolipid biosynthesis - globo and isoglobo series
Glycosphingolipid biosynthesis - ganglio series
Metabolic pathways
Lysosome
  Glycosphingolipid metabolism
Keratan sulfate degradation
CS/DS degradation
Hyaluronan uptake and degradation
Defective HEXB causes GM2G2
Neutrophil degranulation
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
20
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
HEXB-related disorder Likely pathogenic; Pathogenic rs28942073 RCV003407272
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Melanoma Pathogenic rs121907983 RCV005887274
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Sandhoff disease Pathogenic; Likely pathogenic rs1749604779, rs1749680051, rs1749812910, rs1312009126, rs2112175206, rs1306678448, rs1272697701, rs2112180705, rs2112180944, rs2478772082, rs1460801055, rs2112186316, rs2112171738, rs1291555996, rs762821794
View all (140 more)
RCV002545035
RCV001381997
RCV001378417
RCV001382863
RCV001382579
View all (158 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Sandhoff disease, adult form Likely pathogenic; Pathogenic rs28942073, rs121907983, rs1554037088 RCV000004084
RCV000004083
RCV001804177
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Acute myeloid leukemia Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Cervical cancer Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Hepatocellular carcinoma Benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
HEXB POLYMORPHISM Benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Acute Kidney Insufficiency Acute Kidney Insufficiency CTD_human_DG 22005293
★☆☆☆☆
Found in Text Mining only
Adult Sandhoff Disease Sandhoff Disease BEFREE 11897243, 9562328
★☆☆☆☆
Found in Text Mining only
Adult Sandhoff Disease Sandhoff Disease ORPHANET_DG 20798201
★☆☆☆☆
Found in Text Mining only
Adult Sandhoff Disease Sandhoff Disease CTD_human_DG
★☆☆☆☆
Found in Text Mining only
Asthma Asthma LHGDN 18204279
★☆☆☆☆
Found in Text Mining only
Ataxia Ataxia Pubtator 37344817 Associate
★☆☆☆☆
Found in Text Mining only
Autistic Disorder Autism Pubtator 31852446 Associate
★☆☆☆☆
Found in Text Mining only
Cirrhosis Cirrhosis BEFREE 18042293
★☆☆☆☆
Found in Text Mining only
Colon Carcinoma Colon Carcinoma BEFREE 11329012
★☆☆☆☆
Found in Text Mining only
Colorectal Neoplasms Colorectal neoplasm Pubtator 35893034, 36800588, 39947398 Associate
★☆☆☆☆
Found in Text Mining only