Early events in ligand dissociation dynamics in myoglobin: An infrared study

Abstract : We used a femtosecond visible-infrared pump-probe experiment to follow ligand dissociation in carbonmonoxy-myoglobin. The CO mid-infrared absorption was found to be significantly delayed with respect to the photodissiciation. Assuming a gradual vibrational frequency change, the mid-infrared differential transmission can be interpreted in terms of a 1.2 ps ligand transfer time from the heme to the docking site.
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T. Polack, Marten Vos, Jean-Louis Martin, Antigoni Alexandrou. Early events in ligand dissociation dynamics in myoglobin: An infrared study. Springer Series in Chemical Physics, May 2002, Vancouver, Canada. pp.631. ⟨hal-00845036⟩

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