In vitro assays of rod and cone opsin activity: retinoid analogs as agonists and inverse agonists.
In vitro assays of rod and cone opsin activity: retinoid analogs as agonists and inverse agonists.
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视杆细胞和视锥细胞视蛋白活性的体外测定:类维生素A类似物作为激动剂和反向激动剂。
DOI:
10.1007/978-1-60327-325-1_4
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Crouch,RosalieK
中科院分区:
文献类型:
--
作者:
Kono,Masahiro;Crouch,RosalieK
Upon absorption of a photon, the bound 11-cis-retinoid isomerizes to the all-transform resulting in a protein conformational change that enables it to activate its G protein, transducin, to begin the visual signal transduction cascade. The native ligand, 11-cis-retinal, acts as an inverse agonist to both the apoproteins of rod and cone visual pigments (opsins); all-trans-retinal is an agonist. Truncated analogs of retinal have been used to characterize structure–function relationships with rod opsins, but little has been done with cone opsins. Activation of transducin by an opsin is one method to characterize the conformational state of the opsin. This chapter describes an in vitro transducin activation assay that can be used with cone opsins to determine the degree to which different ligands can act as an agonist or an inverse agonist to gain insight into the ligand-binding pocket of cone opsins and differences between the different classes of opsins. The understanding of the effects of ligands on cone opsin activity can potentially be applied to future therapeutic agents targeting opsins.
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影响因子:
2.9
作者:
Kono,Masahiro;Crouch,RosalieK;Oprian,DanielD
通讯作者:
Oprian,DanielD
影响因子:
4.8
作者:
F. Bartl;O. Fritze;E. Ritter;Rolf Herrmann;V. Kuksa;K. Palczewski;K. Hofmann;O. Ernst
通讯作者:
O. Ernst
DOI:
10.1016/0304-4165(75)90337-2
发表时间:
1975-01-01
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
MATSUMOTO, H;TOKUNAGA, F;YOSHIZAWA, T
通讯作者:
YOSHIZAWA, T
影响因子:
3.3
作者:
E. Ramon;X. Mao;K. Ridge
通讯作者:
K. Ridge
影响因子:
2.9
作者:
NATHANS, J
通讯作者:
NATHANS, J