Contents

Mucin 2

Protein-coding gene in the species Homo sapiens

MUC2
Identifiers
Aliases	MUC2, MLP, MUC-2, SMUC, mucin 2, oligomeric mucus/gel-forming
External IDs	OMIM: 158370; MGI: 1339364; HomoloGene: 136755; GeneCards: MUC2; OMA:MUC2 - orthologs
Gene location (Human) Chr. Chromosome 11 (human)[1] Band 11p15.5 Start 1,074,875 bp[1] End 1,110,511 bp[1]
Gene location (Mouse) Chr. Chromosome 7 (mouse)[2] Band 7 F5|7 87.1 cM Start 141,276,583 bp[2] End 141,308,430 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in mucosa of transverse colon rectum duodenum appendix epithelium of colon smooth muscle tissue olfactory zone of nasal mucosa muscle layer of sigmoid colon right coronary artery urinary bladder Top expressed in jejunum colon ileum duodenum neural layer of retina urinary bladder zygote tail of embryo embryo embryo More reference expression data BioGPS n/a
Gene ontology Molecular function protein binding Cellular component extracellular region outer mucus layer Golgi lumen inner mucus layer mucus layer plasma membrane collagen-containing extracellular matrix Biological process O-glycan processing maintenance of gastrointestinal epithelium stimulatory C-type lectin receptor signaling pathway Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 4583 17831 Ensembl ENSG00000198788 ENSMUSG00000025515 UniProt Q02817 n/a RefSeq (mRNA) NM_002457 NM_023566 RefSeq (protein) NP_002448 n/a Location (UCSC) Chr 11: 1.07 – 1.11 Mb Chr 7: 141.28 – 141.31 Mb PubMed search [3] [4]
Wikidata
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Mucin 2, oligomeric mucus gel-forming, also known as MUC2, is a protein that in humans is encoded by the MUC2 gene.^[5][6]

This gene encodes a member of the mucin protein family. The protein encoded by this gene, also called mucin 2, is secreted onto mucosal surfaces.^[5]

Mucin 2 is particularly prominent in the gut where it is secreted from goblet cells in the epithelial lining into the lumen of the large intestine. There, mucin 2, along with small amounts of related-mucin proteins, polymerizes into a gel of which 80% by weight is oligosaccharide side-chains that are added as post-translational modifications to the mucin proteins. This gel provides an insoluble mucous barrier that serves to protect the intestinal epithelium.

The mucin 2 protein features a central domain containing tandem repeats rich in threonine and proline that varies between 50 and 115 copies in different individuals. Alternatively spliced transcript variants of this gene have been described, but their full-length nature is not known.^[7]

• This article incorporates text from the United States National Library of Medicine, which is in the public domain.

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