L. Herenyi et al., ENERGY LANDSCAPE OF THE TAUTOMER STATES OF MESOPORPHYRIN EMBEDDED IN HORSERADISH-PEROXIDASE, Biophysical journal, 69(2), 1995, pp. 577-582
The energy hypersurface of the dominant tautomer states of mesoporphyr
in-substituted horseradish peroxidase was determined by creation of a
nonequilibrium population of these states through photochemical transf
ormation at 5 K and measurement of the temperature changes of the resp
ective spectral bands as they were warmed to room temperature.