These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
Sortase-Modified Cholera Toxoids Show Specific Golgi Localization
preprintsubmitted on 29.07.2019, 08:39 and posted on 29.07.2019, 17:59 by Darren Machin, Daniel Williamson, Peter Fisher, victoria miller, Gemma Wildsmith, James Ross, Christopher Wasson, Andrew MacDonald, Benjamin I. Andrews, Daniel Ungar, W. Bruce Turnbull, Michael Webb
Cholera toxoid is an established tool for use in cellular tracing in neuroscience and cell biology. We use a sortase-labelling approach to generate site-specifically N-terminally modified variants of both the A2-B5 heterohexamer and B5 pentamer forms of the toxoid. Both forms of the toxoid are endocytosed by GM1-positive mammalian cells, and while the heterohexameric toxoid was principally localized in the ER, the B5 pentamer showed an unexpected localization in the medial/trans Golgi. This study suggests a future role for specifically-labelled cholera toxoids in live-cell imaging beyond their current applications in neuronal tracing and labelling of lipid-rafts in fixed cells.
Biotechnology and Biological Sciences Research CouncilFind out more...
Designing protein-protein interfaces in Cholera Toxin for synthetic virus-like capsid construction
Wellcome TrustFind out more...