Use of imaged capillary isoelectric focusing technique in development of diphtheria toxin mutant CRM197.

Polysaccharide based-vaccines have been successful in providing protection in adults from bacterial infections, however they are not as effective in infants or young children. To enhance the immune response in these high risk groups, the polysaccharide is conjugated with a carrier protein such as cross-reacting material 197 (CRM197). The CRM197 protein has been well-characterized biochemically and biophysically using various analytical techniques however, none of these have been CE-based methods.