Enhanced MALDI-TOF MS Analysis of Phosphopeptides Using an Optimized DHAP/DAHC Matrix

<table>The MALDI mass spectra of the tryptic digest of <svg height="7.1750002" id="M85" style="vertical-align:-0.1254pt" version="1.1" viewbox="0 0 8.9375 7.1750002" width="8.9375" xmlns="http://www.w3.org/2000/svg">
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</svg>-casein (250 fmol on target) measured in positive ion mode with DHAP/DAHC matrix at different ratios (10 : 1 to 1 : 80). The signal intensity is magnified 10-fold in the m/z range from 2575 to 3025. The number of sites on each phosphopeptide is equal to the number of asterisks (<svg height="11.525" id="M86" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 6.4749999 11.525" width="6.4749999" xmlns="http://www.w3.org/2000/svg">
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</svg>) shown.</table>

BioMed Research International

fig1

Figure 1

Figure 1: Enhanced MALDI-TOF MS Analysis of Phosphopeptides Using an Optimized DHAP/DAHC Matrix 