Table 1. MS2 and MS3 statistics from complex mixture analysis
Single LC-MS3 of complex mouse liver preparation
    Identified IT-MS2 spectra by mascot 2,972
    Assigned and scored MS3 spectra by msquant 2,365
    b ions fragmented 400
    y ions fragmented 1,965
    [proline-directed y ions] 367
    [doubly-charged y ions] 135
10 different LC-MS3 experiments combined
    Identified IT-MS2 spectra by mascot 11,311
    Assigned and scored MS3 spectra by msquant 8,127
    b ions fragmented 1,584
    y ions fragmented 6,543