Fig. 3

Crystal spectroscopy of ferric P450nor. TR-visible absorption difference spectra of a MC-1 and b MC-2 after caged-NO photolysis. The difference was calculated by subtracting the spectrum recorded prior to photolysis. c Static IR spectrum of MC-2 after caged-NO photolysis. All the measurements were performed in the presence of the SFX carrying medium (hydroxyethyl cellulose matrix) at 293 K