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

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© 2013 The Authors

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-No Derivative Works License, which permits non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig. 8 — Representative charge states for the ESI-MS spectra recorded at pH 7.0 and pH 2.5 of recombinant SpMTA (A, B) and SpMTB (E, F) synthesized in Cu-supplemented E. coli media at normal aeration (N.A.) conditions, and of recombinant Cu-SpMTA (C, D) obtained at low aeration (L.A.) conditions. The observed species are collected in Tables 3 and 4.