Processing and subcellular trafficking of ER-tethered EIN2 control response to ethylene gas.
Processing and subcellular trafficking of ER-tethered EIN2 control response to ethylene gas.
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DOI:
10.1126/science.1225974
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发表时间:
2012-10-19
期刊:
影响因子:
--
通讯作者:
Ecker JR
中科院分区:
文献类型:
--
作者:
Qiao H;Shen Z;Huang SS;Schmitz RJ;Urich MA;Briggs SP;Ecker JR
Ethylene gas is essential for many developmental processes and stress responses in plants. ETHYLENE INSENSITIVE2 (EIN2), an NRAMP-like integral membrane protein, plays an essential role in ethylene signaling, but its function remains enigmatic. Here we report that phosphorylation-regulated proteolytic processing of EIN2 triggers its endoplasmic reticulum (ER)–to–nucleus translocation. ER-tethered EIN2 shows CONSTITUTIVE TRIPLE RESPONSE1 (CTR1) kinase–dependent phosphorylation. Ethylene triggers dephosphorylation at several sites and proteolytic cleavage at one of these sites, resulting in nuclear translocation of a carboxyl-terminal EIN2 fragment (EIN2-C′). Mutations that mimic EIN2 dephosphorylation, or inactivate CTR1, show constitutive cleavage and nuclear localization of EIN2-C′ and EIN3 and EIN3-LIKE1–dependent activation of ethylene responses. These findings uncover a mechanism of subcellular communication whereby ethylene stimulates phosphorylation-dependent cleavage and nuclear movement of the EIN2-C′ peptide, linking hormone perception and signaling components in the ER with nuclear-localized transcriptional regulators.
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影响因子:
9.9
作者:
Lange, Vinzenz;Picotti, Paola;Domon, Bruno;Aebersold, Ruedi
通讯作者:
Aebersold, Ruedi
影响因子:
--
作者:
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DOI:
10.1126/science.1223560
发表时间:
2012-08-03
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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