cff-version: 1.2.0 abstract: "

All primary chemical interactions weaken under mechanical stress, which imposes fundamental mechanical limits on the materials constructed from them. Biological materials combine plasticity with strength, for which nature has evolved a unique solution: catch bonds, supramolecular interactions that strengthen under tension. Biological catch bonds use force-gated conformational switches to convert weak bonds into strong ones. To date, catch bonds remain exclusive to nature, leaving their potential as mechano-adaptive elements in synthetic systems untapped. Here, we report the design and realization of artificial catch bonds. Starting from a minimal set of thermodynamic design requirements, we created a molecular motif capable of catch bonding. It consists of a DNA duplex featuring a cryptic domain that unfolds under tension to strengthen the interaction. We show that these catch bonds recreate force-enhanced rolling adhesion, a hallmark feature of biological catch bonds in bacteria and leukocytes. This work introduces catch bonds into the synthetic domain.

" authors: - family-names: van Galen given-names: Martijn - family-names: Bok given-names: Annemarie - family-names: Peshkovsky given-names: Taieesa - family-names: van der Gucht given-names: Jasper - family-names: Albada given-names: Bauke - family-names: Sprakel given-names: Joris orcid: "https://orcid.org/0000-0001-6532-4514" title: "Dataset underlying publication: De novo DNA-based catch bonds" keywords: version: 1 identifiers: - type: doi value: 10.4121/96e43d14-80a6-46e2-819c-9c627cedf10e.v1 license: CC BY 4.0 date-released: 2023-07-10