Profilin: At the crossroads of signal transduction and the actin cytoskeleton

Richard H. Sohn, Pascal J. Goldschmidt‐Clermont

Research output: Contribution to journalReview articlepeer-review

158 Scopus citations


Despite its small size, profilin is an amazingly diverse and sophisticated protein whose precise role in cells continues to elude the understanding of researchers 15 years after its discovery. Its ubiquity, abundance and necessity for life in more evolved organisms certainly speaks for its extreme importance in cell function. So far, three ligands for profilin have been well-characterized in vitro: actin monomers, membrane polyphosphoinositides and poly-L-proline. In the years following its discovery, profilin's role in vivo progressed from that of a simple actin-binding protein which inhibits actin polymerization, to one which, as an important regulator of the cytoskeleton, can even promote actin polymerization under the appropriate circumstances. In addition, interactions with components of the phosphatidylinositol cycle and the RAS pathway in yeast implicate profilin as an important link through which the actin cytoskeleton is able to communicate with major signaling pathways.

Original languageEnglish (US)
Pages (from-to)465-472
Number of pages8
Issue number7
StatePublished - Jul 1994

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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