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University of Groningen Enhancing the antimicrobial potential of lanthipeptides by employing different engineering strategies Zhao, Xinghong

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University of Groningen

Enhancing the antimicrobial potential of lanthipeptides by employing different engineering

strategies

Zhao, Xinghong

DOI:

10.33612/diss.127409437

IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below.

Document Version

Publisher's PDF, also known as Version of record

Publication date: 2020

Link to publication in University of Groningen/UMCG research database

Citation for published version (APA):

Zhao, X. (2020). Enhancing the antimicrobial potential of lanthipeptides by employing different engineering strategies. University of Groningen. https://doi.org/10.33612/diss.127409437

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Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum.

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Enhancing the antimicrobial

potential of lanthipeptides by

employing different

engineering strategies

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Enhancing the antimicrobial potential of lanthipeptides by

employing different engineering strategies

The scientific studies presented in this thesis were performed at the Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, 9747 AG, The Netherlands.

The candidate was financially supported by the China Scholarship Council (CSC) and the University of Groningen.

Printing of this thesis was financially supported by the Graduate School of Science and Engineering and the University of Grongningen.

Printed by: IPSKAMP Printing

Cover design: Xinghong Zhao

Copyright 2020 Xinghong Zhao

ISBN (printed): 978-94-034-2783-6

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Enhancing the antimicrobial

potential of lanthipeptides by

employing different

engineering strategies

PhD thesis

to obtain the degree of PhD at the

University of Groningen

on the authority of the

Rector Magnificus Prof. C. Wijmenga

and in accordance with

the decision by the College of Deans.

This thesis will be defended in public on

Monday 22 June 2020 at 9.00 hours

by

Xinghong Zhao

born on 3 September 1990

in Sichuan, China

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Supervisors

Prof. Oscar P. Kuipers Prof. Gert N. Moll

Assessment Committee

Prof. A.J.M. Driessen

Prof. G.J. Poelarends Prof. G.P. Van Wezel

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Contents

Chapter 1 General introduction 7

Chapter 2 An engineered double lipid II binding motifs-containing lantibiotic displays potent and selective antimicrobial activity against E. faecium

29

Chapter 3 Mimicry of non-ribosomally produced antimicrobials by ribosomal synthesis and posttranslational modification

59

Chapter 4 High-throughput screening for substrate specificity-adapted mutants of the nisin dehydratase NisB

83

Chapter 5 Silver@nisin nanoclusters are highly effective against biofilm-forming pathogens found in wound infection

121

Chapter 6 Summary and General Discussion 139

Samenvatting 151

Acknowledgements 157

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