Site-Selective Functionalization of Flagellin

  • ChemPubSoc Europe Logo
  • Author: Ruben Ragg
  • Published Date: 09 February 2018
  • Source / Publisher: ChemBioChem/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Site-Selective Functionalization of Flagellin

Related Societies

Flagellin is the main structural component of the bacterial flagellum, the appendage responsible for the mobility, adhesion, and invasiveness of bacteria. It has been shown that immunization with flagellin can protect against bacterial infections. Therefore, flagellin has been used as a carrier in conjugate vaccines with a variety of antigens. However, the necessary site-selective modification of flagellin still remains a challenge.


Jim-Min Fang, National Taiwan University, Taipei, and colleagues have developed a strategy for the selective modification of the variable flagellin D2 and D3 domains (pictured) that are exposed on the surface of the flagellar filament. These domains are functionalized with azido groups using a diazo-transfer reaction with imidazole-1-sulfonyl azide. The D0 and D1 domains for the activation of the toll-like receptor 5 (TLR5) are inside the filament under the steric self-protection strategy during the reaction.


This approach is practical for scaled-up preparation at the milligram level across a variety of bacterial strains and species within a short period, without genetic engineering or complicated operations. It allows the production of the immunogenic flagellin as a self-adjuvanting carrier. This site-selective modification method could help with the development of conjugate vaccines against various bacterial pathogens, including multidrug-resistant bacteria.


 

Article Views: 644

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH