B3GNT6
Acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,3-N-acetylglucosaminyltransferase
Also known as: B3Gn-T6, B3GN6_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q6ZMB0
- Gene
- B3GNT6
- Ensembl
- ENSG00000198488
- Chromosome
- 11
- Canonical length
- 384 aa
- Protein class
- Enzymes, Metabolic proteins, Predicted intracellular proteins
- Secretome location
- Intracellular and membrane
OverviewNCBI Gene
The protein encoded by this gene is a beta-1,3-N-acetylglucosaminyltransferase that adds an N-acetylglucosamine moiety to N-acetylgalactosamine-modified serine or threonine. The encoded enzyme is responsible for creating the core 3 structure of O-glycans, which are important components of mucin-type glycoproteins. [provided by RefSeq, Dec 2016]
Canonical amino-acid sequenceUniProt
384 residues, UniProt reviewed canonical sequence.
>Q6ZMB0|B3GNT6
1 MAFPCRRSLT AKTLACLLVG VSFLALQQWF LQAPRSPREE RSPQEETPEG PTDAPAADEP
61 PSELVPGPPC VANASANATA DFEQLPARIQ DFLRYRHCRH FPLLWDAPAK CAGGRGVFLL
121 LAVKSAPEHY ERRELIRRTW GQERSYGGRP VRRLFLLGTP GPEDEARAER LAELVALEAR
181 EHGDVLQWAF ADTFLNLTLK HLHLLDWLAA RCPHARFLLS GDDDVFVHTA NVVRFLQAQP
241 PGRHLFSGQL MEGSVPIRDS WSKYFVPPQL FPGSAYPVYC SGGGFLLSGP TARALRAAAR
301 HTPLFPIDDA YMGMCLERAG LAPSGHEGIR PFGVQLPGAQ QSSFDPCMYR ELLLVHRFAP
361 YEMLLMWKAL HSPALSCDRG HRVSLocalizationUniProt · AlphaFold · HPA
Whether an antibody against B3GNT6 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Other membrane
- Secreted
- No
- Transmembrane segments
- 1
- Mean surface accessibility (rSASA)
- 0.33
- Highest tissue expression
- 24 nTPM
Expression across tissuesHPA
Tissue
- stomach: 24 nTPM
- colon: 20 nTPM
- rectum: 16 nTPM
- small intestine: 6.6 nTPM
- salivary gland: 6.3 nTPM
- duodenum: 5.1 nTPM
Single-cell type
- goblet cells: 92 nCPM
- esophageal apical cells: 22 nCPM
- foveolar cells: 15 nCPM
- submucosal glandular cells: 8.8 nCPM
- oocytes: 4.6 nCPM
- respiratory deuterosomal cells: 4.1 nCPM
Immune cell
- basophil: 0.6 nTPM
- neutrophil: 0.3 nTPM
- NK-cell: 0.1 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
Brain region
- hypothalamus: 1 nTPM
- white matter: 1 nTPM
- pons: 0.8 nTPM
- cerebral cortex: 0.7 nTPM
- medulla oblongata: 0.7 nTPM
- midbrain: 0.7 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about B3GNT6.
Disease | GeneticClinVar
1 pathogenic / likely-pathogenic of 62 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 1.89
- gnomAD pLI
- 0
- gnomAD missense Z
- -0.22
- DepMap mean gene effect
- -0.09
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- glycoprotein biosynthetic process
- poly-N-acetyllactosamine biosynthetic process
- protein O-linked glycosylation
- protein O-linked glycosylation via N-acetyl-galactosamine
Molecular functions
- beta-1,3-galactosyl-O-glycosyl-glycoprotein beta-1,3-N-acetylglucosaminyltransferase activity
- galactosyltransferase activity
- N-acetyl-beta-D-glucosaminide beta-(1,3)-galactosyltransferase activity
- UDP-glycosyltransferase activity
- acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,3-N-acetylglucosaminyltransferase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads B3GNT6 as an antibody target. Whether an autoantibody or antibody against B3GNT6 could matter depends on whether native B3GNT6 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
B3GNT6 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label B3GNT6 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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