Abstract:
:Intramolecular photostabilization via triple-state quenching was recently revived as a tool to impart synthetic organic fluorophores with 'self-healing' properties. To date, utilization of such fluorophore derivatives is rare due to their elaborate multi-step synthesis. Here we present a general strategy to covalently link a synthetic organic fluorophore simultaneously to a photostabilizer and biomolecular target via unnatural amino acids. The modular approach uses commercially available starting materials and simple chemical transformations. The resulting photostabilizer-dye conjugates are based on rhodamines, carbopyronines and cyanines with excellent photophysical properties, that is, high photostability and minimal signal fluctuations. Their versatile use is demonstrated by single-step labelling of DNA, antibodies and proteins, as well as applications in single-molecule and super-resolution fluorescence microscopy. We are convinced that the presented scaffolding strategy and the improved characteristics of the conjugates in applications will trigger the broader use of intramolecular photostabilization and help to emerge this approach as a new gold standard.
journal_name
Nat Communjournal_title
Nature communicationsauthors
van der Velde JH,Oelerich J,Huang J,Smit JH,Aminian Jazi A,Galiani S,Kolmakov K,Guoridis G,Eggeling C,Herrmann A,Roelfes G,Cordes Tdoi
10.1038/ncomms10144subject
Has Abstractpub_date
2016-01-11 00:00:00pages
10144issn
2041-1723pii
ncomms10144journal_volume
7pub_type
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