Molecular mimicry regulates ABA signaling by SnRK2 kinases and PP2C phosphatases.
Molecular mimicry regulates ABA signaling by SnRK2 kinases and PP2C phosphatases.
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DOI:
10.1126/science.1215106
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发表时间:
2012-01-06
期刊:
影响因子:
--
通讯作者:
Xu HE
中科院分区:
文献类型:
--
作者:
Soon FF;Ng LM;Zhou XE;West GM;Kovach A;Tan MH;Suino-Powell KM;He Y;Xu Y;Chalmers MJ;Brunzelle JS;Zhang H;Yang H;Jiang H;Li J;Yong EL;Cutler S;Zhu JK;Griffin PR;Melcher K;Xu HE
Abscisic acid (ABA) is an essential hormone for plants to survive environmental stresses. At the center of the ABA signaling network is a subfamily of type 2C protein phosphatases (PP2Cs), which form exclusive interactions with ABA receptors and subfamily 2 Snfl-related kinase (SnRK2s). Here, we report a SnRK2-PP2C complex structure, which reveals marked similarity in PP2C recognition by SnRK2 and ABA receptors. In the complex, the kinase activation loop docks into the active site of PP2C, while the conserved ABA-sensing tryptophan of PP2C inserts into the kinase catalytic cleft, thus mimicking receptor-PP2C interactions. These structural results provide a simple mechanism that directly couples ABA binding to SnRK2 kinase activation and highlight a new paradigm of kinase-phosphatase regulation through mutual packing of their catalytic sites.
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影响因子:
64.8
作者:
通讯作者:
--
DOI:
10.1126/science.1173041
发表时间:
2009-05-22
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Park SY;Fung P;Nishimura N;Jensen DR;Fujii H;Zhao Y;Lumba S;Santiago J;Rodrigues A;Chow TF;Alfred SE;Bonetta D;Finkelstein R;Provart NJ;Desveaux D;Rodriguez PL;McCourt P;Zhu JK;Schroeder JI;Volkman BF;Cutler SR
通讯作者:
Cutler SR
DOI:
10.1073/pnas.0912021106
发表时间:
2009-12-15
影响因子:
11.1
作者:
Geiger, Dietmar;Scherzer, Soenke;Hedrich, Rainer
通讯作者:
Hedrich, Rainer
影响因子:
4.8
作者:
Burza, Anna Maria;Pekala, Izabela;Dobrowolska, Grazyna
通讯作者:
Dobrowolska, Grazyna
影响因子:
4.1
作者:
Sanders, Matthew J.;Grondin, Pascal O.;Carling, David
通讯作者:
Carling, David