Projects per year
Abstract
A type of protein/peptide pair known as Catcher/Tag pair spontaneously forms an intermolecular isopeptide bond which can be applied for biomolecular click reactions. Covalent protein conjugation using Catcher/Tag pairs has turned out to be a valuable tool in biotechnology and biomedicines, but it is essential to increase the current toolbox of orthogonal Catcher/Tag pairs to expand the range of applications further, for example, for controlled multiple-fragment ligation. We report here the engineering of novel Catcher/Tag pairs for protein ligation, aided by a crystal structure of a minimal CnaB domain from Lactobacillus plantarum. We show that a newly engineered pair, called SilkCatcher/Tag enables efficient pH-inducible protein ligation in addition to being compatible with the widely used SpyCatcher/Tag pair. Finally, we demonstrate the use of the SilkCatcher/Tag pair in the production of native-sized highly repetitive spider-silk-like proteins with >90 % purity, which is not possible by traditional recombinant production methods.
Original language | English |
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Article number | e202216371 |
Number of pages | 10 |
Journal | Angewandte Chemie - International Edition |
Volume | 62 |
Issue number | 11 |
Early online date | 7 Feb 2023 |
DOIs | |
Publication status | Published - 6 Mar 2023 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Catcher/Tag
- Protein Engineering
- Protein Ligation
- Protein Modifications
- Spider Silk
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FinnCERES: Competence Center for the Materials Bioeconomy: A Flagship for our Sustainable Future
Naukkarinen, O. (Principal investigator)
01/05/2022 → 30/06/2026
Project: Academy of Finland: Other research funding
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LIBER Linder: Life-like hybrid materials
Linder, M. (Principal investigator), Elfving, K. (Project Member), Lemetti, L. (Project Member), Tunn, I. (Project Member), Aspelin, H. (Project Member), Roas Escalona, N. (Project Member), Aranko, S. (Project Member), Malkamäki, M. (Project Member), Osmekhina, E. (Project Member) & Fedorov, D. (Project Member)
01/01/2022 → 31/12/2026
Project: Academy of Finland: Other research funding
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CrossSilk: Durable and functional biomaterials from crosslinked non-canonical silk and cellulose composite
Aranko, S. (Principal investigator), Elfving, K. (Project Member), Shen, M. (Project Member), Fan, R. (Project Member) & Astapov, D. (Project Member)
01/09/2020 → 31/08/2024
Project: Academy of Finland: Other research funding
Equipment
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Bioeconomy Research Infrastructure
Seppälä, J. (Manager)
School of Chemical EngineeringFacility/equipment: Facility