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. Author manuscript; available in PMC: 2008 Jul 7.
Published in final edited form as: Biochemistry. 2006 Aug 29;45(34):10344–10350. doi: 10.1021/bi060746v

Fig. 3.

Fig. 3

Mass determination of OxlT and its derivatives after exposure to MTSEA. (Lower left) Tracings show MALDI-TOF mass spectrometry for wild type OxlT (WT) and its C28G/C271A derivative (GA), both treated with excess MTSEA (1 mM) prior to solubilization and purification. (Center) Tracings show mass determinations for the K355C variant exposed to excess MTSEA (K355CMTSEA) and then treated with excess DTT (K355C); (Upper right) Mass determinations for the R272C derivative exposed to MTSEA (R272CMTSEA) and then to excess DTT (R272C).