Picosecond Transient Circular Dichroism of the Photoreceptor Protein of the Light-Adapted Form of Blepharisma Japonicum

Abstract : 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.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00435861
Contributor : Pascal Plaza <>
Submitted on : Wednesday, November 25, 2009 - 10:05:44 AM
Last modification on : Thursday, March 21, 2019 - 2:43:45 PM

Identifiers

Citation

François Hache, Mai-Thu Khuc, Johanna Brazard, Pascal Plaza, Monique Martin, et al.. Picosecond Transient Circular Dichroism of the Photoreceptor Protein of the Light-Adapted Form of Blepharisma Japonicum. Chemical Physics Letters, Elsevier, 2009, 483, pp.133. ⟨10.1016/j.cplett.2009.10.059⟩. ⟨hal-00435861⟩

Share

Metrics

Record views

232