Tyrosine phosphorylation regulates the activity of phytochrome photoreceptors.
Tyrosine phosphorylation regulates the activity of phytochrome photoreceptors.
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DOI:
10.1016/j.celrep.2013.05.006
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发表时间:
2013-06-27
期刊:
影响因子:
8.8
通讯作者:
Chory J
中科院分区:
文献类型:
--
作者:
Nito K;Wong CC;Yates JR 3rd;Chory J
Phytochromes are red/far-red light receptors that function in photomorphogenesis of plants. Photoisomerization of phytochrome by red light leads to its translocation to the nucleus where it regulates gene expression. We examined whether phytochrome is phosphorylated in response to light, and report that phyB’s N-terminus contains a region with a number of phospho-serines, threonines and tyrosines. The light-dependent phosphorylation of tyrosine 104 (Y104) appears to play a negatve role in phyB’s activity because a phospho-mimic mutant, phyBY104E is unable to complement any phyB-related phenotype, is defective in binding to its signaling partner PIF3, and fails to form stable nuclear bodies, even though it retains normal photochemistry in vitro. In contrast, plants stably expressing a non-phosphorylatable mutant phyBY104F are hypersensitive to light. Because the proper response to changes in the light environment is crucial to plant survival, our study brings tyrosine phosphorylation to the forefront of light signaling mechanisms.
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影响因子:
4.5
作者:
Kikis, Elise A.;Oka, Yoshito;Hudson, Matthew E.;Nagatani, Akira;Quail, Peter H.
通讯作者:
Quail, Peter H.
DOI:
10.1101/sqb.1960.025.01.025
发表时间:
1960-01-01
期刊:
COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY
影响因子:
--
作者:
HENDRICKS, SB
通讯作者:
HENDRICKS, SB
影响因子:
7.2
作者:
Gupta, R;Huang, YF;Luan, S
通讯作者:
Luan, S
影响因子:
5.1
作者:
Fordham-Skelton, AP;Skipsey, M;Gatehouse, JA
通讯作者:
Gatehouse, JA
影响因子:
7.2
作者:
Clough, SJ;Bent, AF
通讯作者:
Bent, AF