title: LIM proteins in actin cytoskeleton mechanoresponse.
abstract: The actin cytoskeleton assembles into branched networks or bundles to generate mechanical force for critical cellular processes such as establishment of polarity, adhesion, and migration. Stress fibers (SFs) are contractile actomyosin structures that physically couple to the extracellular matrix through integrin-based focal adhesions (FAs), thereby transmitting force into and across the cell. Recently, LIN-11, Isl1, and MEC-3 (LIM) domain proteins have been implicated in mediating this cytoskeletal mechanotransduction. Among the more well-studied LIM domain adapter proteins is zyxin, a dynamic component of both FAs and SFs. Here we discuss recent research detailing the mechanisms by which SFs adjust their structure and composition to balance mechanical forces and suggest ways that zyxin and other LIM domain proteins mediate mechanoresponse.
authors.affiliation: Department of Biology, University of Utah, Salt Lake City, UT 84112, USA; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Smith
authors.affiliation: Department of Biology, University of Utah, Salt Lake City, UT 84112, USA; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA.
authors.forename: L M
authors.initials: LM
authors.lastname: Hoffman
authors.affiliation: Department of Biology, University of Utah, Salt Lake City, UT 84112, USA; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA; Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112, USA. Electronic address: mary.beckerle@hci.utah.edu.
authors.forename: M C
authors.initials: MC
authors.lastname: Beckerle
mesh_terms: D008841:Actin Cytoskeleton / Q000737:chemistry / Q000378:metabolism*; D000818:Animals; D006801:Humans; D060850:LIM-Homeodomain Proteins / Q000737:chemistry / Q000378:metabolism*; D040542:Mechanotransduction, Cellular / Q000502:physiology*; D013314:Stress, Mechanical
chemical_list: D060850:LIM-Homeodomain Proteins
keywords: LIM domain; focal adhesion; mechanotransduction; stress fiber; zyxin