Fimbrin

Fimbrin crosslinks actin filaments, making them a parallell bundle, also disallowing the myosin II motor protein to enter it. This is to be compared with the effect of alpha-actinin , which bundles actin filaments together into a contractile bundle.

Do not confuse fimbrin with fibrin or fibrinogen!

See figure 16-40 of The Molecular Biology of The Cell, 4:th edition at the bookshelf of PubMed for a nice image

Category: Biochemistry/Microbiology