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. Author manuscript; available in PMC: 2006 Feb 2.
Published in final edited form as: FEBS Lett. 2005 Sep 26;579(23):5236–5240. doi: 10.1016/j.febslet.2005.08.046

Fig. 1.

Fig. 1

Reconstructed ESI-quadrupole mass spectra of monomeric A. vinelandii IscU, IscUC37A, IscUC63A, and IscUC106A before and after incubation with IscS and l-cysteine. Left panel: IscU and IscU variants (0.1 mM) after incubation with excess DTT. Right panel: IscU and IscU variants (0.1 mM) after incubation with 0.1 mM IscS and 2.0 mM l-cysteine for 20 min.