Time-resolved fluorescence spectroscopy and photolysis of the photoreceptor blepharismin.

Time-resolved fluorescence spectroscopy and photolysis of the photoreceptor blepharismin.
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光感受器 blepharismin 的时间分辨荧光光谱和光解。

DOI:
10.1016/0005-2728(93)90203-r
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发表时间:
1993
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
Song,PS
Song,PS
中科院分区:
--
文献类型:
--
作者:
Yamazaki,T;Yamazaki,I;Nishimura,Y;Dai,R;Song,PS

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ble法利赛蛋白是纤毛虫日本ble法利赛的光感受器(Scevoli, P., Bisi, F., Colombetti, G., Ghetti, F., Lenci, F., and Passarelli, V., 1987)。Photobiol。[j] .生物学报,1,75-84;Lenci, F., Ghetti, F., Gioffre, D., Heelis, p ., Thomas, B., Phillips, g.o.和Song, p - s。(1989) .光化学。Photobiol。[b] .《生物学刊》3,449 -453。用2% n-辛基吡喃葡萄糖苷从红细胞中溶解ble法利赛明。粗色素蛋白的制备依次经过Bio-Gel A1.5过滤、FPLC/羟基磷灰石和FPLC/DEAE离子交换层析。至少有两种不同的光谱形式的ble法利赛明,分别在597±1 nm和601±1 nm处具有最大吸光度。稳态荧光发射最大值分别为602.5 nm和617.5 nm。这些色素的荧光衰减曲线是非指数型的。根据一项全球分析,前者的主要成分具有相对较短的荧光寿命(200-500 ps)。这一分析表明,短波长吸收形式的ble法利赛素的激发态比自由亲本发色团金丝桃素的激发态经历初级光过程的速度更快。ble法利赛明在溶液中的光解产生不可逆产物,并伴有最大吸光度10-12 nm的色移。然而,时间分辨荧光的机理和ble法利赛明的光化学性质仍有待阐明。
Blepharismin is the photoreceptor for the photophobic response in the ciliateBlepharisma japonicum(Scevoli, P., Bisi, F., Colombetti, G., Ghetti, F., Lenci, F., and Passarelli, V. (1987) J. Photochem. Photobiol.: B. Biol. 1, 75-84; Lenci, F., Ghetti, F., Gioffre, D., Heelis, P.F., Thomas, B., Phillips, G.O., and Song, P.-S. (1989) J. Photochem. Photobiol.: B. Biol. 3, 449-453). Blepharismin was solubilized from the red cells with 2% n-octylglucopyranoside. A crude pigment-protein preparation was then successively subjected to Bio-Gel A1.5 filtration, FPLC/hydroxyapatite and FPLC/DEAE ion-exchange chromatography. At least two spectrally distinct forms of blepharismin, with the respective absorbance maxima at 597 ± 1 and 601 ± 1 nm, were resolved. The steady state fluorescence emission maxima were at 602.5 and 617.5 nm, respectively. The fluorescence decay curves for these pigments were non-exponential. The major component possesses relatively short fluorescence lifetime (200–500 ps) for the former, according to a global analysis. This analysis suggests that the excited state of the shorter wavelength-absorbing form of blepharismin undergoes primary photoprocess faster than that of the free parental chromophore hypericin. Photolysis of blepharismin in solution yielded a irreversible product, accompanied by a 10–12 nm bathochromic shift of the absorbance maximum. However, the mechanistic nature of the time-resolved fluorescence and the photochemistry of blepharismin remains to be elucidated.
蓝色和红色形式的 Blepharisma japonicum 的避光反应的作用谱
DOI: 10.1111/j.1751-1097.1993.tb02938.x
发表时间: 1993
影响因子: 3.3
作者:
G. Checcucci;G. Damato;F. Ghetti;F. Lenci
通讯作者: F. Lenci
DOI: 10.1016/1011-1344(89)80049-1
发表时间: 1989
期刊: Journal of photochemistry and photobiology. B, Biology
影响因子: --
作者:
F. Lenci;F. Ghetti;D. Gioffrè;V. Passarelli;P. Song;P. F. Heelis;B. Thomas;G. Phillips
通讯作者: G. Phillips
Blepharisma japonicum I 的光动力响应:光感受器色素的作用光谱测定和时间分辨荧光
DOI: 10.1016/1011-1344(87)80007-6
发表时间: 1987
影响因子: 5.4
作者:
Patrizia Scevoli;F. Bisi;G. Colombetti;F. Ghetti;F. Lenci;V. Passarelli
通讯作者: V. Passarelli
DOI: 10.1016/0167-4838(90)90144-5
发表时间: 1990
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Kim,IH;Rhee,JS;Huh,JW;Florell,S;Faure,B;Lee,KW;Kahsai,T;Song,PS;Tamai,N;Yamazaki,T
通讯作者: Yamazaki,T
眼睑的光生物学
DOI: 10.1007/978-1-4684-7003-1_4
发表时间: 1981
影响因子: 5.4
作者:
A. C. Giese
通讯作者: A. C. Giese