Simeth, Nadja

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09.04.2026

In Situ Construction of Imidazopyridinium Fluorescent Labels for Bioconjugation

Authors Du D, Albert L, Weitzel M, Eijsink LE, Cotroneo ER, Marzin D, Opazo F, Simeth NA Journal Angewandte Chemie (International ed. in Engl.) Citation Angew Chem Int Ed Engl. 2026 Apr 9:e6231674. Abstract Simple, efficient transformations of fluorogenic nature that proceed under biocompatible conditions without the formation of byproducts
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02.03.2026

Nanobodies equipped with HaloTag variants enable rapid and straightforward one-step immunofluorescence lifetime multiplexing

Authors Albert L, Basak S, Koerner H, Oleksiievets N, Mougios N, Cotroneo ER, Frei MS, Enderlein J, Broichhagen J, Simeth NA, Tsukanov R, Opazo F Journal BioRxiv Citation bioRxiv 2026.03.02.709025. Abstract Multiplexed fluorescence imaging is limited by spectral overlap, whereas fluorescence lifetime provides an orthogonal encoding dimension. We replace genetically
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20.02.2026

The Nonadiabatic Nature of the Substituent Effects in Azobenzene

Authors van der Wal JJ, Peshkov RY, Steen JD, Simeth NA, Crespi S Journal Angewandte Chemie (International ed. in Engl.) Citation Angew Chem Int Ed Engl. 2026 Feb 20:e23613. Abstract The mechanism of thermal Z → E isomerization in azobenzenes has been debated for nearly a century, with inversion, rotation,
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08.10.2025

Expected and Unexpected “Guests” at the Active Site of Human Orotidine 5′-Monophosphate Decarboxylase

Authors Kirck LL, Santagostino E, Brandhoff L, Simeth NA, Tittmann K Journal Biochemistry Citation Biochemistry. 2025 Oct 8. Abstract With an extraordinary rate enhancement of 1017 compared to the uncatalyzed reaction and no need for a cofactor, orotidine 5′-monophosphate decarboxylase (OMPDC) is considered one of the most efficient enzymes. Its
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18.08.2025

Introduction to photoswitches and photopharmacology

Authors Cacciarini M, Woolley GA, Szymanski W, Simeth NA Journal Organic & Biomolecular Chemistry Citation Org Biomol Chem. 2025 Aug 18. Abstract No abstract available. DOI 10.1039/d5ob90098k   Pubmed Link  
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19.07.2025

Photoactivatable and Photolabile Pharmacophores: Lessons Learned from Capsaicin

Authors Imse B, Rojas L, Herrero CG, Thallmair S, Rhee JS, Simeth N Journal RSC Chemical Biology Citation RSC Chem Biol. 2025 Jul 19. Abstract Light-controlled molecules have become valuable tools for studying biological systems offering an unparalleled control in space and time. Specifically, the remote-controllable (de)activation of small molecules
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01.07.2025

Fluorinated Phenylazopyrazoles for Monitoring the Photoisomerization in Complex Systems

Authors Jakob L, van der Wal JJ, Tovtik R, Copko J, Iagatti A, Donato MD, Crespi S, Simeth NA Journal Chemistry – A European Journal Citation Chemistry. 2025 Jul 1:e202501856. Abstract Photoswitches have been impacting diverse areas of research, introducing means of dynamically regulating their environment through reversible photochemical isomerization.
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25.04.2025

Substituent effects in N-acetylated phenylazopyrazole photoswitches

Authors Tovtik R, Marzin D, Weigel P, Crespi S, Simeth NA Journal Beilstein Journals of Organic Chemistry Citation Beilstein J Org Chem. 2025 Apr 25;21:830-838. Abstract Phenylazopyrazole photoswitches proved to be valuable structural motifs for various applications ranging from materials science to medicine. Despite their potential, their structural diversity is
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22.01.2025

A Photoswitchable Tryptophan Zipper – (Un)folding Fibrils in Seconds

Authors Cotroneo ER, Cheng TC, Kaltschnee L, Maibach P, Engelke M, Schwegler N, Thomas F, Thiele CM, Simeth N Journal ChemRxiv Citation ChemRxiv. 2025. Abstract Peptides and proteins, that have the tendency to form aggregates, are often discussed in the context of Alz-heimer’s, Huntington’s, or Parkinson’s disease. However, studying aggregation
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10.10.2024

NanoPlex: a universal strategy for fluorescence microscopy multiplexing using nanobodies with erasable signals

Authors Mougios N, Cotroneo ER, Imse N, Setzke J, Rizzoli S, Simeth NA, Tsukanov R, Opazo F Journal Nature Communications Citation Nat Commun. 2024 Oct 10;15(1):8771. Abstract Fluorescence microscopy has long been a transformative technique in biological sciences. Nevertheless, most implementations are limited to a few targets, which have been
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