9,13-dicis-rhodopsin and its one-photon-one-double-bond isomerization.

9,13-dicis-rhodopsin and its one-photon-one-double-bond isomerization.
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9,13-二顺视紫红质及其一光子一双键异构化。

DOI:
10.1021/bi00417a044
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发表时间:
1988
期刊:
影响因子:
2.9
通讯作者:
R. S. Liu
R. S. Liu
中科院分区:
生物学3区
文献类型:
--
作者:
Y. Shichida;K. Nakamura;T. Yoshizawa;A. Trehan;M. Denny;R. S. Liu

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将纯化的9,13-双-视黄醛与牛视蛋白在2%毛地黄皂苷中在20 ℃下孵育产生两种色素,一种在羟胺中不稳定(λ max 478 nm),另一种在羟胺中稳定(λ max 485 nm)。这两种颜料表现出不同的特性。HPLC分析表明,这些色素的发色团分别具有9,13-二顺式和9-顺式几何构型。在各种条件下形成的9,13-双视紫红质的量从未超过总色素的30%。将9,13-双-视黄醛添加到含有视蛋白的ROS悬浮液中以97%的产率产生9-顺式-视紫红质。照射9,13-双视紫红质主要产生13-顺式-视黄醛,而9-顺式-视紫红质产生全反式异构体。这些结果表明,9,13-双视紫红质发生了单光子一双键异构化过程。
Incubation of purified 9,13-dicis-retinal with cattle opsin in 2% digitonin at 20 degrees C produced two pigments, one unstable (lambda max 478 nm) and the other stable (lambda max 485 nm) in hydroxylamine. The two pigments exhibited different characteristics. HPLC analysis revealed that the chromophores of these pigments have respectively 9,13-dicis and 9-cis geometries. Under various conditions the amount of 9,13-dicis-rhodopsin formed never exceeded 30% of the total pigments. The addition of 9,13-dicis-retinal to the ROS suspension containing opsin produced 9-cis-rhodopsin in 97% yield. Irradiation of the 9,13-dicis-rhodopsin mainly produced 13-cis-retinal, while 9-cis-rhodopsin produced the all-trans isomer. These results demonstrated that the one-photon-one-double-bond isomerization process took place in 9,13-dicis-rhodopsin.
通过氟化视紫红质类似物研究视紫红质发色团和视紫红质中视蛋白之间的静电相互作用。
DOI: 10.1021/bi00388a035
发表时间: 1987
期刊: Biochemistry
影响因子: 2.9
作者:
Shichida,Y;Ono,T;Yoshizawa,T;Matsumoto,H;Asato,AE;Zingoni,JP;Liu,RS
通讯作者: Liu,RS