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Any collagen polymer in which collagen triple helices associate to form sheet-like networks. Any of the various assemblies in which collagen chains form a left-handed triple helix; may assemble into higher order structures. A layer consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that forms a sheet underlying or overlying cells such as endothelial and epithelial cells. The proteins are secreted by cells in the vicinity. An example of this component is found in Mus musculus. A collagen heterotrimer containing type IV alpha chains; [alpha1(IV)]2alpha2(IV) trimers are commonly observed, although more type IV alpha chains exist and may be present in type IV trimers; type IV collagen triple helices associate to form nets within basement membranes. Any constituent part of the extracellular matrix, the structure lying external to one or more cells, which provides structural support for cells or tissues; may be completely external to the cell (as in animals) or be part of the cell (as often seen in plants). A thin layer of dense material found in various animal tissues interposed between the cells and the adjacent connective tissue. It consists of the basal lamina plus an associated layer of reticulin fibers.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: collagen type IV
Acc: GO:0005587
Aspect: Cellular Component
Desc: A collagen heterotrimer containing type IV alpha chains; [alpha1(IV)]2alpha2(IV) trimers are commonly observed, although more type IV alpha chains exist and may be present in type IV trimers; type IV collagen triple helices associate to form nets within basement membranes.
Proteins in PDR annotated with:
   This term: 9 [Search]
   Term or descendants: 9 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0005587 - collagen type IV (interactive image map)
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