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Exploring the Substrate Scope of the Bacterial Phosphocholine Transferase AnkX for Versatile Protein Functionalization
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2019 (English)In: ChemBioChem (Print), ISSN 1439-4227, E-ISSN 1439-7633, Vol. 20, no 18, p. 2336-2340Article in journal (Refereed) Published
Abstract [en]

Site-specific protein functionalization has become an indispensable tool in modern life sciences. Here, tag-based enzymatic protein functionalization techniques are among the most versatilely applicable approaches. However, many chemo-enzymatic functionalization strategies suffer from low substrate scopes of the enzymes utilized for functional labeling probes. We report on the wide substrate scope of the bacterial enzyme AnkX towards derivatized CDP-choline analogues and demonstrate that AnkX-catalyzed phosphocholination can be used for site-specific one- and two-step protein labeling with a broad array of different functionalities, displaying fast second-order transfer rates of 5x10(2) to 1.8x10(4) m(-1) s(-1). Furthermore, we also present a strategy for the site-specific dual labeling of proteins of interest, based on the exploitation of AnkX and the delabeling function of the enzyme Lem3. Our results contribute to the wide field of protein functionalization, offering an attractive chemo-enzymatic tag-based modification strategy for in vitro labeling.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2019. Vol. 20, no 18, p. 2336-2340
Keywords [en]
CDP-choline, dual labeling, phosphocholination, protein modifications, transferases
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-164139DOI: 10.1002/cbic.201900200ISI: 000486565800006PubMedID: 31054261OAI: oai:DiVA.org:umu-164139DiVA, id: diva2:1361902
Available from: 2019-10-17 Created: 2019-10-17 Last updated: 2019-10-17Bibliographically approved

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Ochtrop, PhilippHedberg, Christian

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