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Journal Articles Physical Chemistry Chemical Physics Year : 2007

Subpicosecond UV spectroscopy of carbonmonoxy-myoglobin: Absorption and circular dichroism studies

Abstract

A thorough absorption and circular dichroism study is performed in carbonmonoxy-myoglobin with a sub-picosecond visible pump, ultraviolet probe experiment. Differential absorption in the 220-360 nm range shows that the time-resolved response mainly comes from the heme and that aromatic amino acids do not contribute significantly. Time-resolved CD at 260 nm shows no dynamics and confirms this result. On the contrary, a strong CD dynamics is observed at 230 nm. This signal could originate from transient deformation of the a-helices in the protein. Cop. the Owner Societies.

Dates and versions

hal-00824060 , version 1 (22-05-2013)

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Thibault Dartigalongue, Claire Niezborala, François Hache. Subpicosecond UV spectroscopy of carbonmonoxy-myoglobin: Absorption and circular dichroism studies. Physical Chemistry Chemical Physics, 2007, 9 (13), pp.1611. ⟨10.1039/b616173a⟩. ⟨hal-00824060⟩
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