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- W2585282785 abstract "IQGAP1 is a large, multi-domain scaffold that helps orchestrate cell signaling and cytoskeletal mechanics by controlling interactions among a spectrum of receptors, signaling intermediates, and cytoskeletal proteins. While this coordination is known to impact cell morphology, motility, cell adhesion, and vesicular traffic, among other functions, the spatiotemporal properties and regulatory mechanisms of IQGAP1 have not been fully resolved. Herein, we describe a series of super-resolution and live-cell imaging analyses that identified a role for IQGAP1 in the regulation of an actin cytoskeletal shell surrounding a novel membranous compartment that localizes selectively to the basal cortex of polarized epithelial cells (MCF-10A). These largely immotile yet highly dynamic structures are identified as multivesicular membrane processing stations that participate in adherens junction protein traffic. We also show that IQGAP1 appears to both stabilize the actin coating and constrain its growth. Loss of compartmental IQGAP1 initiates a disassembly mechanism involving rapid and unconstrained actin polymerization around the compartment and dispersal of its vesicle contents. Together, these findings suggest IQGAP1 achieves this control over compartment dynamics by harnessing both stabilizing and antagonistic interactions with actin." @default.
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- W2585282785 date "2017-02-01" @default.
- W2585282785 modified "2023-09-28" @default.
- W2585282785 title "Coordinating Role of IQGAP1 in the Regulation of Multivesicular Endosomal Compartment Dynamics" @default.
- W2585282785 doi "https://doi.org/10.1016/j.bpj.2016.11.2302" @default.
- W2585282785 hasPublicationYear "2017" @default.
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