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. 2021 May 14;1(7):913–918. doi: 10.1021/jacsau.1c00145

Figure 3.

Figure 3

Spectroscopic characterization of the CpdI state of CcP and CcP S-Trp. (a,b) Oxidation of the ferric states of CcP (a, black line) and CcP S-Trp (b, dark blue) leads to the generation of a CpdI state with spectral features consistent with a neutral ferryl heme (gray line in CcP, pale blue line in CcP S-Trp, Soret maxima at 420 nm in both variants). Fitted transients are indicated in insets. (c) X-band continuous wave EPR spectra of the CpdI state of CcP and CcP S-Trp. EPR measurements are at 6 K, and g values are marked. (d) Raman spectra of the ferric and ferryl states of CcP (black and gray lines, respectively) and CcP S-Trp (dark blue and pale blue, respectively).