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The ability to sense and respond to mechanical forces is essential for life and cells have evolved a variety of systems to convert physical forces into cellular signals. Within this repertoire are the mechanosensitive ion channels, proteins that play critical roles in mechanosensation by transducing forces into ionic currents across cellular membranes. Understanding how these channels work, particularly...
Nuclear pore complexes (NPCs) perforate the nuclear envelope and represent the exclusive passageway into and out of the nucleus of the eukaryotic cell. Apart from their essential transport function, components of the NPC have important, direct roles in nuclear organization and in gene regulation. Because of its central role in cell biology, it is of considerable interest to determine the NPC structure...
Nucleocytoplasmic transport is mediated by nuclear pore complexes (NPCs), enormous protein assemblies residing in circular openings in the nuclear envelope. The NPC is modular, with transient and stable components. The stable core is essentially built from two multiprotein complexes, the Y-shaped heptameric Nup84 complex and the Nic96 complex, arranged around an eightfold axis. We present the crystal...
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