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. Author manuscript; available in PMC: 2018 Mar 3.
Published in final edited form as: ACS Chem Biol. 2017 Mar 16;12(5):1235–1244. doi: 10.1021/acschembio.7b00142

Figure 2.

Figure 2

ESI-MS analysis of intact molecular weights of MtIlvE-PLP inhibited overnight by (A) DCS and (B) LCS. The peak at m/z 332.06 represents, in both cases, the presence of a noncovalent protein inhibitor complex where the cycloserine ring is intact.