Piezos are force-gated ion channels that detect and communicate membrane tension to the cell. Recent work from Ullah, Nosyreva, and colleagues characterizes partial channel openings, known as subconductance states, and develops a new gating model of Piezo1 function.
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http://dx.doi.org/10.1016/j.tibs.2024.05.005 | DOI Listing |
Angew Chem Int Ed Engl
October 2024
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
It has long been an aspirational goal to create artificial channel structures that replicate the feat achieved by ion channel proteins. Biological ion channels occasionally demonstrate multiple conductance states (known as subconductance), remaining a challenging property to achieve in artificial channel molecules. We report a funnel-shaped single-molecule channel constructed by an electron-deficient macrocycle and two electron-deficient aromatic imide arms.
View Article and Find Full Text PDFTrends Biochem Sci
July 2024
Department of Neurobiology, Duke University Medical Center, Durham, NC 27710, USA. Electronic address:
Piezos are force-gated ion channels that detect and communicate membrane tension to the cell. Recent work from Ullah, Nosyreva, and colleagues characterizes partial channel openings, known as subconductance states, and develops a new gating model of Piezo1 function.
View Article and Find Full Text PDFPhys Rev E
April 2024
Universitat de Barcelona, Departament de Física de la Matèria Condensada, Martí i Franqués, 1, E-08028 Barcelona, Spain.
A physical model for a structured tetrameric pore is studied. The pore is modeled as a device composed of four subunits, each one exhibiting two possible states (open and closed). The pore is located within a membrane that separates two reservoirs with ionic solutions.
View Article and Find Full Text PDFStructure
June 2024
Astbury Centre for Structural Molecular Biology, School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, UK; School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic and Health Science Centre, The University of Manchester, Manchester M13 9PT, UK; Manchester Institute of Biotechnology, The University of Manchester, Manchester M1 7DN, UK. Electronic address:
Membrane forces shift the equilibria of mechanosensitive channels enabling them to convert mechanical cues into electrical signals. Molecular tools to stabilize and methods to capture their highly dynamic states are lacking. Cyclodextrins can mimic tension through the sequestering of lipids from membranes.
View Article and Find Full Text PDFJ Biol Chem
April 2024
Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, Texas, USA. Electronic address:
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