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Spatial N-glycan rearrangement on α5β1 integrin nucleates galectin-3 oligomers to determine endocytic fate | Nature Communications

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Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Advertisement Nature Communications volume  16, Article number: 9461 (2025) Cite this article 3191 Accesses 7 Altmetric Metrics details Membrane glycoproteins frequently adopt different conformations when altering between active and inactive states. Here, we discover a molecular switch that exploits dynamic spatial rearrangements of N-glycans during such conformational transitions to control protein function. For the conformationally switchable cell adhesion glycoprotein α5β1 integrin, we find that only the bent-closed state arranges N-glycans to nucleate the formation of up to tetrameric oligomers of the glycan-binding p

Introduction Integrins are heterodimeric glycoproteins that are made up of one out of 18 α and one out of 8 β subunits, with key functions in the adhesion of cells to extracellular matrix ligands such as fibronectin1,2,3. Integrins exist in a continuum of conformations between bent-closed non-ligand-bound (also termed inactive) and extended ligand-bound (also termed active) states4. N-glycans affect the equilibrium between these two conformers5, but the underlying mechanisms remain largely unexplored. Glycosylation is required for integrin functions5,6,7,8,9,10,11,12,13. Membrane distal…

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