IQGAP proteins are integral components of cytoskeletal regulation
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Updated: Sep 25, 2026

Visualization of G3BP Stress Granules Dynamics in Live Primary Cells
Published on: May 21, 2014
Michael W Briggs1, David B Sacks
1Brigham and Women's Hospital, Thorn 530, 75 Francis Street, Boston, MA 02115, USA.
Abstract:
IQGAP1 is a scaffolding protein that binds to a diverse array of signalling and structural molecules. By interacting with its target proteins, human IQGAP1 participates in multiple cellular functions, including Ca(2+)/calmodulin signalling, cytoskeletal architecture, CDC42 and Rac signalling, E-cadherin-mediated cell-cell adhesion and beta-catenin-mediated transcription. Yeast IQGAP homologues are important regulators of cellular morphogenesis because they are required for budding and cytokinesis. Here we discuss the structure and function of IQGAP1 as a member of the family of IQGAP proteins and summarize the current knowledge about IQGAP1 and IQGAP2. Collectively, these data reveal that IQGAP1 is a fundamental regulator of cytoskeletal function.
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