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Mucins (/ ˈ m juː s ɪ n /) are a family of high molecular weight, heavily glycosylated proteins (glycoconjugates) produced by epithelial tissues in most animals. [1] Mucins' key characteristic is their ability to form gels; therefore they are a key component in most gel-like secretions, serving functions from lubrication to cell signalling to forming chemical barriers. [1]
The major mucins secreted – MUC5AC and MUC5B - are large polymers that give the mucus its rheologic or viscoelastic properties. [7] [4] MUC5AC is the main gel-forming mucin secreted by goblet cells, in the form of threads and thin sheets. MUC5B is a polymeric protein secreted from submucosal glands and some goblet cells, and this is in the ...
It is one of the five gel-forming mucins. MUC-5B can be found in whole saliva, normal lung mucus, and cervical mucus. MUC-5B can be found in whole saliva, normal lung mucus, and cervical mucus. In some diseases, such as COPD , chronic rhinosinusitis (CRS), and H. pylori -associated gastric disease, the gene has been found to be upregulated, and ...
Goblet cells are simple columnar epithelial cells that secrete gel-forming mucins, like mucin 2 in the lower gastrointestinal tract, and mucin 5AC in the respiratory tract. [1] The goblet cells mainly use the merocrine method of secretion, secreting vesicles into a duct, but may use apocrine methods, budding off their secretions, when under ...
The two main components of the gel are mucins and water, with the mucins forming the backbone of the mucous. [4] Mucin originates from the mucus secretions from submaxillary glands, which are salivary glands that are located under the floor of the mouth. The secreted mucin assists in digestion by coating the bolus such that it travels easily ...
Mucilage is a thick gluey substance produced by nearly all plants and some microorganisms. These microorganisms include protists which use it for their locomotion, with the direction of their movement always opposite to that of the secretion of mucilage. [1] It is a polar glycoprotein and an exopolysaccharide.
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 Wikidata View/Edit Human View/Edit Mouse Mucin 2, oligomeric mucus gel-forming, also known as MUC2, is a protein that in humans is encoded by the MUC2 gene. Function This gene ...
Here they form large complexes, both to other proteoglycans, to hyaluronan, and to fibrous matrix proteins, such as collagen. The combination of proteoglycans and collagen form cartilage , a sturdy tissue that is usually heavily hydrated (mostly due to the negatively charged sulfates in the glycosaminoglycan chains of the proteoglycans). [ 5 ]