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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2014 Aug 19;25(10):1675–1693. doi: 10.1007/s13361-014-0965-1

Figure 3.

Figure 3

Subunit interactions are maintained, despite the increased charge borne by a 28-mer complex. ESI-MS of Methanosarcina thermophila 20S proteasome (690-kDa) (a) without, and (b) with 0.25% m-NBA. (Reprinted Fig. S1, with permission, from Lomeli, et al [53].