Chapter title |
Ion-Exchange Chromatography to Analyze Components of a Clostridium difficile Vaccine
|
---|---|
Chapter number | 20 |
Book title |
Clostridium difficile
|
Published in |
Methods in molecular biology, January 2016
|
DOI | 10.1007/978-1-4939-6361-4_20 |
Pubmed ID | |
Book ISBNs |
978-1-4939-6359-1, 978-1-4939-6361-4
|
Authors |
Richard R. Rustandi Ph.D., Feng Wang, Catherine Lancaster, Adam Kristopeit, David S. Thiriot, Jon H. Heinrichs, Rustandi, Richard R, Wang, Feng, Lancaster, Catherine, Kristopeit, Adam, Thiriot, David S, Heinrichs, Jon H, Richard R. Rustandi, Rustandi, Richard R., Thiriot, David S., Heinrichs, Jon H. |
Editors |
Adam P. Roberts, Peter Mullany |
Abstract |
Ion-exchange (IEX) chromatography is one of many separation techniques that can be employed to analyze proteins. The separation mechanism is based on a reversible interaction between charged amino acids of a protein to the charged ligands attached to a column at a given pH. This interaction depends on both the pI and conformation of the protein being analyzed. The proteins are eluted by increasing the salt concentration or pH gradient. Here we describe the use of this technique to characterize the charge variant heterogeneities and to monitor stability of four protein antigen components of a Clostridium difficile vaccine. Furthermore, the IEX technique can be used to monitor reversion to toxicity for formaldehyde-treated Clostridium difficile toxins. |
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