Xie, a.x.
(Aihua Xie)

FRAOS04 Coherent Protein Dynamics Explored at FELIX
Robert Austin (PU, Princeton, New Jersey), Britta Redlich, Lex van der Meer (FOM Rijnhuizen, Nieuwegein), Aihua Xie (OKSU-Phy, Stillwater - Oklahoma)

We have discovered that there exists a very narrow (less than 0.02 microns) wide resonance in the amide I band of myoglobin and photoactive yellow protein that can be driven to greater than 30% saturation using very narrow linewidth pump-probe spectroscopy at FELIX. The extraordinary narrowness of this transition and the extraordinary ease of saturation inplies that this band is highly anharmonic and decoupled from the other oscillators in the amide I band. We will present detailed measurments on this discovery and implications for energy flow in proteins.