Effect of different cloning strategies in pET-28a on solubility and functionality of a staphylococcal phage endolysin

Endolysins have been studied intensively as an alternative to antibiotics. In this study, endolysin derived from a phage which infects methicillin-resistant Staphylococcus aureus (MRSA) was cloned and expressed in Escherichia coli pET28a. Initially, the endolysin was cloned using BamHI/XhoI, resulting in expression of a recombinant endolysin which was expressed in inclusion bodies. While solubilization was successful, the protein remained nonfunctional. Recloning the endolysin using NcoI/XhoI resulted in expression of soluble and functional proteins at 18°C. The endolysin was able to form halo zones on MRSA plates and showed a reduction in turbidity of MRSA growth. Therefore, cloning strategies should be chosen carefully even in an established expression system as they could greatly affect the functionality of the expressed protein.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:69

Enthalten in:

BioTechniques - 69(2020), 3 vom: 16. Sept., Seite 161-170

Sprache:

Englisch

Beteiligte Personen:

Tham, Hong Y [VerfasserIn]
Song, Adelene A-L [VerfasserIn]
Yusoff, Khatijah [VerfasserIn]
Tan, Geok H [VerfasserIn]

Links:

Volltext

Themen:

Antimicrobial activity
EC 3.4.-
EC 3.4.99.-
Endolysin
Endopeptidases
Inclusion body
Journal Article
MRSA
PET28a
Protein expression
Recombinant Proteins
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 09.08.2021

Date Revised 09.08.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.2144/btn-2020-0034

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM313622930