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Figure 1
SpyCatcher-Tag structures. Dark blue: previously determined crystal structure of SpyCatcher001–SpyTag001 (PDB entry 4mli; Li et al., 2014BB22). Green: SpyCatcher003–SpyTag003. Gray: AlphaFold model of SpyCatcher003–SpyTag003. Inset: isopeptide bond in SpyCatcher003–SpyTag003 structure between Lys31 NZ atom in the Catcher domain (green) and Asp117 CG atom in the Tag peptide (black).

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SYNCHROTRON
RADIATION
ISSN: 1600-5775
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