Time and Frequency Domain Investigations on Ultrafast Photoisomerization Reaction Dynamics of PYP

摘要

Low frequency modes of PYP (photoactive yellow protein), its several mutant and analogue systems have been investigated by fluorescence up-conversion and resonance Raman scattering techniques, complemented by DFT and ab initio MO calculations. Assignments of the oscillatory components to particular vibrations are proposed. Their role in photoisomerization reaction is discussed.