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Strong protein mixtures identification

A wide variety of separation mechanisms have been combined in 2D-HPLC to separate complex protein mixtures. Size exclusion [66], affinity [67], lEX [68-70], and chromatofocusing [71] have been used as a first-dimension separation in combination with RP as a second-dimension separation. lEX-RP, the most extensively studied combination, has been coupled to EIS time-of-flight MS for separation and identification of ribosomal proteins from yeast [72]. Approximately 70% of the potential ribosomal subunits isoforms could be identified with an average mass error of 50ppm. In the experimental setup, two parallel RP columns were alternately switched in series with a strong anion-exchange column to reduce the analysis time. [Pg.603]

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See also in sourсe #XX -- [ Pg.65 ]



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