Journal
SCIENCE
Volume 309, Issue 5737, Pages 1096-1100Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1115001
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Fluorescence spectroscopy of a green fluorescent protein mutant at single-molecule resolution has revealed a remarkable oscillatory behavior that can also be driven by applied fields. We show that immediately before unfolding, several periodic oscillations among the chemical substates of the protein chromophore occur. We also show that applied alternating electric or acoustic fields, when tuned to the protein characteristic frequencies, give rise to strong resonance effects.
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