Picosecond transient circular dichroism of the photoreceptor protein of the light-adapted form of Blepharisma japonicum

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TitrePicosecond transient circular dichroism of the photoreceptor protein of the light-adapted form of Blepharisma japonicum
Type de publicationJournal Article
Nouvelles publications2009
AuteursHache, F, Khuc MT, Brazard J, Plaza P, Martin MM, Checcucci G, Lenci F
JournalChemical Physics Letters
Volume483
Fascicule1-3
Pagination133-137
Année de publicationNov
Numéro0009-2614
Accession NumberISI:000271758000026
Résumé

We present a picosecond transient circular dichroism study of OBIP, the putative photoreceptor protein involved in the photophobic response of Blepharisma japonicum. The probe wavelength was chosen at 230 nm. The results are compared to those of the isolated chromophore, OxyBP, in solution. The CD changes in OBIP and OxyBP do not show the same dynamics: OBIP's signal relaxes in a few ps whereas no such decay is obtained for OxyBP. This observation brings support to the formerly evoked existence of a fast photoinduced reaction in the chromoprotein, and demonstrates the implication of local geometrical changes that accompany this process. (C) 2009 Published by Elsevier B. V.

URL<Go to ISI>://000271758000026
DOI10.1016/j.cplett.2009.10.059
Importer un fichierPicosecond transient circular dichroism of the photoreceptor protein of the light-adapted form of Blepharisma japonicum
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