Use this URL to cite or link to this record in EThOS:
Title: Approaches to rapid protein modification using sortase
Author: Arnott, Zoe Louise Pike
ISNI:       0000 0004 7425 7175
Awarding Body: University of Leeds
Current Institution: University of Leeds
Date of Award: 2018
Availability of Full Text:
Access from EThOS:
Full text unavailable from EThOS. Thesis embargoed until 01 Sep 2023
Access from Institution:
Sortase A mediated labelling is a versatile method for protein modification without the need for unnatural amino acid incorporation or complex labelling reagent synthesis. Over the past decade several developments have improved the efficiency of these reactions. These have included the investigation of different types of labelling substrates to reduce the reversible nature of the reactions. In addition to this, the introduction of mutant enzymes has increased the rate of reaction by up to 120-fold, however the labelling is still not quantitative. In this work one of the faster enzyme mutants, sortase 7M, was used alongside depsipeptide substrates which have been previously reported to take part in irreversible labelling reactions. Optimised conditions have been established to enable proteins to be labelled in under 3 hours using only 2 3 equivalents of depsipeptide substrate. Using this approach, proteins have been labelled with species which have allowed them to be used in a wide variety of biophysical applications including for the characterisation of protein-protein interactions by SPR and FRET, and for the visualisation of protein protein interactions at a single-molecule level using high speed AFM.
Supervisor: Webb, Michael E. ; Pearson, Arwen R. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available