Figure 5.
Negative ion mass spectra collected after ubiquitin [U + H]+ ions subjected to reaction with anions derived from carboxylate-terminated polyamidoamine dendrimer generations 0.5 (a), 1.5 (b), 2.5 (c), and 3.5 (d).
Negative ion mass spectra collected after ubiquitin [U + H]+ ions subjected to reaction with anions derived from carboxylate-terminated polyamidoamine dendrimer generations 0.5 (a), 1.5 (b), 2.5 (c), and 3.5 (d).