Femtosecond multicolor pump: probe spectroscopy of ferrous cytochrome c

Cytochrome c (cyt c) is a member of the ubiquitous class of heme proteins, which function as reversible redox carriers in electron-transport chains. Ligand photolysis and subsequent electronic and structural relaxation, followed by ligand recombination, in ferrous cyt c is studied using ultrafast laser spectroscopy.