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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Characterization of protein-hapten conjugates. 1. Matrix-assisted laser desorption ionization mass spectrometry of immuno BSA-hapten conjugates and comparison with other characterization methods.

Several different low molecular weight haptens were conjugated to BSA to produce immunogens useful for antibody development. The extent of BSA modification due to covalent attachment of hapten was estimated by matrix-assisted laser desorption ionization mass spectrometry. The average number of hapten incorporated to immunogen was determined from the difference in the measured molecular weights of the conjugate from nonmodified BSA. The results from mass spectrometry were compared with results obtained from other more traditional methods of immunogen characterization (UV analysis, trinitrobenzenesulfonic acid titrations, and gel electrophoresis). In each case we were able to calculate the average number of hapten covalently bound to BSA for each synthetically prepared immunogen using matrix-assisted laser desorption ionization mass spectrometry. The other methods presented limitations in certain cases.[1]

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