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CE detection of N-(3-dimethylaminopropyl)-N-carbodiimide/N-hydroxysuccinimide-coupled proteins after homo- and hetero-crosslinking reactions.

Muskotál, Adél; Kokol, Vanja.
Electrophoresis; 31(6): 1097-100, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20166141
Protein-protein conjugates formed by carbodiimide crosslinking reactions have been analyzed for the first time using CE. Lysozyme and BSA were chosen as model proteins to study the efficacy of N-(3-dimethylaminopropyl)-N-ethylcarbodiimide and N-hydroxysuccinimide as crosslinkers. Detection of the molecular mass increase was checked by SDS-PAGE. Commercially available, PVA-coated capillaries showed appropriate selection, while phospho-deactivated and dynamic PVA-coated capillaries did not give suitable resolution. CE was found to be an efficient tool to characterize homo- (lysozyme-lysozyme) and hetero- (lysozyme-BSA) protein coupling by suitable variations of electrophoretic mobilities.
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