Fig. (5).
A comparison of the ESI-IMS-MS characteristics of apo-osteocalcin16-49 and holo-osteocalcin16-49. ESI-IMS-MS spectra and IMS drift time chromatograms for the 3+ and 2+ charge state ions from: a) apo-osteocalcin residues 16-49 (OST16-49), and b) holo-osteocalcin residues 16-49 (OST16-49 + 3Ca2+).