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Conferences > ICUSD > 2012 > IW2D > IW2D.6

X-ray absorption studies of the photo-induced structural changes of myoglobin in physiological

Frederico Lima, Christopher Milne, Mercedes Hannelore Rittmann–Frank, Renske van der Veen, Marco Reinhard, Thomas Penfold, Maurizio Benfatto, and Majed Chergui

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Abstract

We report on the investigation of the photo-induced structural changes of MbNO in physiological media using ultrafast x-ray absorption spectroscopy (XAS). Pronounced changes are observed in the XANES region of the spectrum, and the NO recombination is found to occur in 216 ± 24 ps. The resulting structural analysis hints at the possibility of an intermediate structure where the NO is not completely de-ligated.

© 2012 Optical Society of America

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