Volume 101, Issue 1 e1700259
Communication

Labeling and Protecting N-Terminal Protein Positions by β-Peptidyl Aminopeptidase-Catalyzed Attachment of β-Amino-Acid Residues – Insulin as a First Example

Beata Kolesinska

Beata Kolesinska

Institute of Organic Chemistry, Technical University of Łodz, Zeromskiego 116, PL-90-924 Łodz, Poland

This research work was partially supported by TUL Grants I-18/501/6245/pl1 and I-18/501/6255/pl1.Search for more papers by this author
Joanna Wasko

Joanna Wasko

Institute of Organic Chemistry, Technical University of Łodz, Zeromskiego 116, PL-90-924 Łodz, Poland

Parts of the projected PhD thesis of J. W. are described herein.Search for more papers by this author
Zbigniew Kaminski

Zbigniew Kaminski

Institute of Organic Chemistry, Technical University of Łodz, Zeromskiego 116, PL-90-924 Łodz, Poland

This research work was partially supported by TUL Grants I-18/501/6245/pl1 and I-18/501/6255/pl1.Search for more papers by this author
Birgit Geueke

Birgit Geueke

Department of Environmental Microbiology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland

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Hans-Peter E. Kohler

Hans-Peter E. Kohler

Department of Environmental Microbiology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland

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Dieter Seebach

Dieter Seebach

Laboratorium für Organische Chemie, Departement Chemie und Angewandte Biowissenschaften, ETH-Zürich, Hönggerberg HCI, Vladimir-Prelog-Weg 3, CH-8093 Zürich, Switzerland

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Dedicated to Elias J. Corey on the occasion of his 90th birthday
First published: 21 December 2017
Citations: 3

Abstract

We have shown for the first time that a natural protein (human insulin) can be acylated at the N-terminus with a β-amino acid (H-β3hAla-), in a process catalyzed by the β-peptidyl aminopeptidase 3-2W4-BapA. This selective modification, which could also be applied for protein labeling and tagging, should be generally useful, also to protect peptides and proteins from attack by common aminopeptidases.

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