Figure 6
ESI FT-ICR mass spectra of human recombinant CA II. (A) A broadband mass spectrum of native CA II (different protein ion charge states have been assigned as z + = [CA II + z H]z+) and (B) an expanded view on the charge state 24+ for native CA II, and CA II samples treated with 100 mM acetaldehyde in the absence and presence of NaBH3(CN). The determined masses have been indicated. In panel B, the mass scale in Da is set for the charge state 24+.