Send to

Choose Destination
See comment in PubMed Commons below
Trends Cell Biol. 2009 Jun;19(6):276-85. doi: 10.1016/j.tcb.2009.03.004. Epub 2009 May 4.

New players in actin polymerization--WH2-domain-containing actin nucleators.

Author information

Institute for Biochemistry I, Friedrich-Schiller-University Jena, Nonnenplan 2, Jena, Germany.


Actin nucleators promote the polymerization of the different types of actin arrays formed in a variety of cellular processes, such as cell migration, cellular morphogenesis and membrane trafficking processes. Several novel nucleators have been discovered recently. They all contain Wiskott-Aldrich syndrome protein (WASP) homology 2 (WH2 or W) domains for actin nucleation but seem to employ different molecular mechanisms and serve distinct cellular functions. Here, we summarize what is currently known about the different molecular mechanisms that Spire, Cordon-Bleu and Leiomodin seem to use and, also, the bacterial counterparts that mimic them (VopF, VopL and TARP). Recent studies on these WH2 proteins offer unique insight into the biological problem of actin-filament formation and how cells use specialized molecular machines to bring about so many different cytoskeletal structures.

[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center