Chemical modification of transducin with dansyl chloride hinders its binding to light-activated rhodopsin.
Chemical modification of transducin with dansyl chloride hinders its binding to light-activated rhodopsin.
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用丹磺酰氯对转导蛋白进行化学修饰会阻碍其与光激活视紫红质的结合。
DOI:
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
J. Bubis
中科院分区:
文献类型:
--
作者:
A. Kosoy;C. Möller;D. Perdomo;J. Bubis
Transducin (T), the heterotrimeric guanine nucleotide binding protein in rod outer segments, serves as an intermediary between the receptor protein, rhodopsin, and the effector protein, cGMP phosphodiesterase. Labeling of T with dansyl chloride (DnsCl) inhibited its light-dependent guanine nucleotide binding activity. Conversely, DnsCl had no effect on the functionality of rhodopsin. Approximately 2-3 mol of DnsCl were incorporated per mole of T. Since fluoroaluminate was capable of activating DnsCl-modified T, this lysine-specific labeling compound did not affect the guanine nucleotide-binding pocket of T. However, the labeling of T with DnsCl hindered its binding to photoexcited rhodopsin, as shown by sedimentation experiments. Additionally, rhodopsin completely protected against the DnsCl inactivation of T. These results demonstrated the existence of functional lysines on T that are located in the proximity of the interaction site with the photoreceptor protein.
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影响因子:
--
作者:
Natochin,M;Artemyev,NO
通讯作者:
Artemyev,NO
DOI:
10.1073/pnas.93.2.560
发表时间:
1996-01-23
影响因子:
11.1
作者:
Baylor, D
通讯作者:
Baylor, D
影响因子:
4.4
作者:
P. Hargrave
通讯作者:
P. Hargrave
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kisselev,OG;Ermolaeva,MV;Gautam,N
通讯作者:
Gautam,N
影响因子:
2.9
作者:
Hingorani,VN;Ho,Y
通讯作者:
Ho,Y