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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2011 Dec 30;23(3):505–519. doi: 10.1007/s13361-011-0309-3

Fig. 3.

Fig. 3

Comparison of MALDI-TOF MS spectra collected at time point t = 4hr for trypsin digests of (a) apo-, (b) calcium-bound, and (c) cobalt-bound CBD. Full-length CBD construct is GST tag + 894–1008, where the GST tag is the seven residue peptide (GSPGIPG) remaining after thrombin cleavage of the GST-CBD fusion protein