Fig. 4: Mass spectra of myoglobin digestion with various methods. | Nature Communications

Fig. 4: Mass spectra of myoglobin digestion with various methods.

From: Ultrafast enzymatic digestion of proteins by microdroplet mass spectrometry

Fig. 4

a Commercial ESI-MS (LTQ Orbitrap Elite, Thermo Scientific), b bulk phase at 37 °C for 14 h, followed by analysis with commercial ESI-MS, and ESSI-MS applied with c a positive high voltage (+3 kV), and d a negative high voltage (−3 kV). Magenta asterisks denote the peptide fragments, and blue #s mark undigested myoglobin peaks.

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