Fibrillin (IPR011398)

Short name: FBN

Overlapping homologous superfamilies


Family relationships



This family includes fibrillin-1, 2 and 3. Fibrillins are structural components of 10-12 nm extracellular calcium-binding microfibrils, which occur either in association with elastin or in elastin-free bundles. Fibrillin-containing microfibrils provide long-term force bearing structural support [PMID: 14962672].

This entry also includes MUA-3, a Caenorhabditis elegans homologue of the mammalian fibrillin1 [PMID: 25917920].

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0005509 calcium ion binding
GO:0005201 extracellular matrix structural constituent

Cellular Component

GO:0062023 collagen-containing extracellular matrix

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.