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. Author manuscript; available in PMC: 2015 Aug 13.
Published in final edited form as: Biochemistry. 2011 Apr 25;50(19):3946–3956. doi: 10.1021/bi101137n

Figure 1.

Figure 1

Resonance Raman spectra of the O2 (a) and CO (b) adducts of the G8WF mutant of Ctb. The data associated with the natural abundant and isotope-labeled ligands and the isotope-difference spectra are as indicated. The inset in (a) shows the correlation between νFe–O2 and νO–O.