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. 2013 Jan 22;3:89–100. doi: 10.1016/j.fob.2013.01.005

Fig. 10.

Fig. 10

Representative charge states for the ESI-MS spectra of recombinant αSpMTB (A, D, F), βSpMTA (B, G) and βSpMTB (C, E) synthesized in Cu-supplemented E. coli media at normal (N.A.) and low (L.A.) aeration conditions. M-MT species where M = Zn + Cu are assigned in spectra recorded at pH 7.0 (A–C, G), while Cu-MT species are assigned when recorded at pH 2.5 (D–F). The observed species are collected in Tables 3 and 4.