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. Author manuscript; available in PMC: 2015 Aug 13.
Published in final edited form as: J Am Chem Soc. 2009 Mar 11;131(9):3260–3270. doi: 10.1021/ja807969a

Figure 1.

Figure 1

Optical absorption spectra of the ferric, ferrous, and CO-derivatives of the H76S and H76A mutants of hTDO in the absence (A and B) and presence (C and D) of L-Trp. The visible bands are expanded by a factor of 4 and are staggered for clarity. The protein solutions were buffered at pH 7 with 100 mM phosphate. The concentration of L-Trp used for C and D was 20 mM.