Cancer Protein Description

This report provides a detailed description of a selected cancer protein with information collected from various sources, including UniProt, the Wellcome Trust Sanger Institute’s Catalogue of Somatic Mutations in Cancer (COSMIC), and the Atlas of Genetics and Cytogenetics in Oncology and Haematology.


Protein Name: B3GNT6
Gene Name: B3GNT6
Protein Full Name: UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltr
Alias: Core 3 synthase
Mass (Da): 42748
Number AA: 384
UniProt ID: Q6ZMB0
Locus ID: 192134
COSMIC ID: B3GNT6
Gene location on chromosome: 11q13.4
Cancer protein type: TSP
Effect of cancer mutation on protein: LOSS
Effect of active protein on cancer: INHIBITS
Number of cancer specimens: 19581
Percent of cancer specimens with mutations: 0.07
Normal role description: B3GNT6 is a single-pass type II membrane protein that synthesizes the core 3 structure of the O-glycan, an important precursor in the biosynthesis of mucin-type O-glycans in mucus secreting digestive organs. Loss of core 3 leads to production of secreted mucins with compromised function, resulting in bacteria being inefficiently removed, potentially leading to chronic inflammation, which may in turn promote cancer development in the GI tract. B3GNT6 is therefore considered a tumour suppressor gene in mucus secreting organs.
Commentary on involvement of protein in cancer: 2 % (1/59) of ovary samples were mutated (silent) (Sanger COSMIC)


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