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Synlett 2024; 35(09): 1042-1046
DOI: 10.1055/a-2219-6830
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Chemical Synthesis and Catalysis in Germany

Catalytically Competent Fluorinated Barnase Variants

Alexander Langhans
a   Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20 14195 Berlin, Germany
,
Michael Krummhaar
b   Max Planck Institute of Colloids and Interfaces, Arnimallee 22 14195 Berlin, Germany
,
Christian Roth
b   Max Planck Institute of Colloids and Interfaces, Arnimallee 22 14195 Berlin, Germany
,
Beate Koksch∗
a   Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20 14195 Berlin, Germany
› Author AffiliationsFinancial support for this work was provided by the Deutsche Forschungsgemeinschaft (DFG) through the SFB 1349 Fluor-Spezifische Wechselwirkungen and the graduate school IMPRS (International Max-Planck Research School) on Multiscale Biosystems of the Max-Planck Institute for Colloids and Interfaces.
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Abstract

Proteins play critical roles in all living organisms, and their properties and functions result directly from their primary sequences. Fluorine, though seldom found in natural organic compounds, has been shown to impart desirable properties to small molecules and proteins alike. However, studies on the impact of this element in enzyme activity and protein–protein interaction are largely absent from the literature. Here we present a microwave-assisted SPPS method for the total synthesis of site-specifically fluorinated barnase variants, as well as characterization of their folding and activity. CD spectroscopy and fluorescence-based activity assays show that the fluorinated amino acids are generally not perturbative of the protein structure and that enzyme activity, albeit reduced, is retained in all variants.

Key words

protein synthesis - fluorinated amino acids - enzyme activity

Supporting Information

    Supporting information for this article is available online at https://doi.org/10.1055/a-2219-6830.
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Publication History

Received: 05 October 2023

Accepted after revision: 29 November 2023

Accepted Manuscript online:
29 November 2023

Article published online:
05 February 2024

© 2023. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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