Figure 3. X-band, L-band, and 300-MHz ESR spectra of CoQ₀-mediated AFR, ¹⁴N-CmP and Oxo63.

X-band (a), L-band (a), and 300-MHz (b) ESR absorption spectra for the mixture of 1250 mM Asc and 12.5 mM CoQ₀, ¹⁴N-CmP and Oxo63 solutions. The concentrations of ¹⁴N-CmP and Oxo63 solutions were 100 and 10 μM in (a) and (b), and 200 and 50 μM in (c), respectively. These absorption spectra are obtained by integration of the spectra shown in Figure S-3. In (c), spectral peaks of the AFR doublet spectrum are indicated by the arrows.