Heme destruction of the wild-type cyt <i>c</i> (A) and its Y67H variant (B) as indicated by dissipation of the Soret band.

<p>Spectra were scanned every 20 sec, and the arrows indicate the direction of change. The concentrations of H₂O₂ were 10 mM in (A) and 1 mM in (B), the pH condition in both cases is 6.0.