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

François Hache; Mai Thu Khuc; Johanna Brazard; Pascal Plaza; Monique M. Martin; Giovanni Checcucci; Francesco Lenci

doi:10.1016/j.cplett.2009.10.059

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

François Hache, Mai Thu Khuc, Johanna Brazard, Pascal Plaza, Monique M. Martin, Giovanni Checcucci, Francesco Lenci

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	133-137
Number of pages	5
Journal	Chemical Physics Letters
Volume	483
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2009.10.059
Publication status	Published - 1 Jan 2009

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title = "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.",

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T1 - Picosecond transient circular dichroism of the photoreceptor protein of the light-adapted form of Blepharisma japonicum

AU - Hache, François

AU - Khuc, Mai Thu

AU - Brazard, Johanna

AU - Plaza, Pascal

AU - Martin, Monique M.

AU - Checcucci, Giovanni

AU - Lenci, Francesco

PY - 2009/1/1

Y1 - 2009/1/1

N2 - 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.

AB - 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.

U2 - 10.1016/j.cplett.2009.10.059

DO - 10.1016/j.cplett.2009.10.059

M3 - Article

AN - SCOPUS:72049132893

SN - 0009-2614

VL - 483

SP - 133

EP - 137

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

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

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