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  • 1
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    Perception of brassinosteroids by the extracellular domain of the receptor kinase BRI1 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-07-06
    Description: An assay was developed to study plant receptor kinase activation and signaling mechanisms. The extracellular leucine-rich repeat (LRR) and transmembrane domains of the Arabidopsis receptor kinase BRI1, which is implicated in brassinosteroid signaling, were fused to the serine/threonine kinase domain of XA21, the rice disease resistance receptor. The chimeric receptor initiates plant defense responses in rice cells upon treatment with brassinosteroids. These results, which indicate that the extracellular domain of BRI1 perceives brassinosteroids, suggest a general signaling mechanism for the LRR receptor kinases of plants. This system should allow the discovery of ligands for the LRR kinases, the largest group of plant receptor kinases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉He, Z -- Wang, Z Y -- Li, J -- Zhu, Q -- Lamb, C -- Ronald, P -- Chory, J -- New York, N.Y. -- Science. 2000 Jun 30;288(5475):2360-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Biology Laboratory, The Howard Hughes Medical Institute, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10875920" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis ; *Arabidopsis Proteins ; Brassinosteroids ; Cell Death ; Cell Line ; Chitinase/genetics ; Cholestanols/*metabolism/pharmacology ; Gene Expression Regulation, Plant ; Ligands ; Oryza/cytology/*metabolism/microbiology ; Phenylalanine Ammonia-Lyase/genetics ; Plant Proteins/genetics/metabolism ; Plants, Genetically Modified ; Protein Kinases/*chemistry/genetics/*metabolism ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Respiratory Burst ; *Signal Transduction ; Steroids, Heterocyclic/*metabolism/pharmacology ; Xanthomonas/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Structural insight into brassinosteroid perception by BRI1 (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-06-15
    Description: Brassinosteroids are essential phytohormones that have crucial roles in plant growth and development. Perception of brassinosteroids requires an active complex of BRASSINOSTEROID-INSENSITIVE 1 (BRI1) and BRI1-ASSOCIATED KINASE 1 (BAK1). Recognized by the extracellular leucine-rich repeat (LRR) domain of BRI1, brassinosteroids induce a phosphorylation-mediated cascade to regulate gene expression. Here we present the crystal structures of BRI1(LRR) in free and brassinolide-bound forms. BRI1(LRR) exists as a monomer in crystals and solution independent of brassinolide. It comprises a helical solenoid structure that accommodates a separate insertion domain at its concave surface. Sandwiched between them, brassinolide binds to a hydrophobicity-dominating surface groove on BRI1(LRR). Brassinolide recognition by BRI1(LRR) is through an induced-fit mechanism involving stabilization of two interdomain loops that creates a pronounced non-polar surface groove for the hormone binding. Together, our results define the molecular mechanisms by which BRI1 recognizes brassinosteroids and provide insight into brassinosteroid-induced BRI1 activation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4019668/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4019668/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉She, Ji -- Han, Zhifu -- Kim, Tae-Wuk -- Wang, Jinjing -- Cheng, Wei -- Chang, Junbiao -- Shi, Shuai -- Wang, Jiawei -- Yang, Maojun -- Wang, Zhi-Yong -- Chai, Jijie -- R01 GM066258/GM/NIGMS NIH HHS/ -- R01GM066258/GM/NIGMS NIH HHS/ -- England -- Nature. 2011 Jun 12;474(7352):472-6. doi: 10.1038/nature10178.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Key Laboratory for Protein Sciences of Ministry of Education School of Life Sciences, Tsinghua University, Beijing 100084, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21666666" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/*chemistry/*metabolism ; Arabidopsis Proteins/*chemistry/*metabolism ; Binding Sites ; Brassinosteroids ; Cholestanols/chemistry/*metabolism ; Crystallography, X-Ray ; Enzyme Activation ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Protein Binding ; Protein Folding ; Protein Kinases/*chemistry/*metabolism ; Protein Structure, Tertiary ; Steroids, Heterocyclic/chemistry/*metabolism ; Structure-Activity Relationship ; Substrate Specificity
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    BSKs mediate signal transduction from the receptor kinase BRI1 in Arabidopsis (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-07-26
    Description: Brassinosteroids (BRs) bind to the extracellular domain of the receptor kinase BRI1 to activate a signal transduction cascade that regulates nuclear gene expression and plant development. Many components of the BR signaling pathway have been identified and studied in detail. However, the substrate of BRI1 kinase that transduces the signal to downstream components remains unknown. Proteomic studies of plasma membrane proteins lead to the identification of three homologous BR-signaling kinases (BSK1, BSK2, and BSK3). The BSKs are phosphorylated by BRI1 in vitro and interact with BRI1 in vivo. Genetic and transgenic studies demonstrate that the BSKs represent a small family of kinases that activate BR signaling downstream of BRI1. These results demonstrate that BSKs are the substrates of BRI1 kinase that activate downstream BR signal transduction.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2730546/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2730546/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tang, Wenqiang -- Kim, Tae-Wuk -- Oses-Prieto, Juan A -- Sun, Yu -- Deng, Zhiping -- Zhu, Shengwei -- Wang, Ruiju -- Burlingame, Alma L -- Wang, Zhi-Yong -- R01 GM066258/GM/NIGMS NIH HHS/ -- R01 GM066258-07/GM/NIGMS NIH HHS/ -- R01GM066258/GM/NIGMS NIH HHS/ -- RR012961/RR/NCRR NIH HHS/ -- RR01614/RR/NCRR NIH HHS/ -- RR019934/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2008 Jul 25;321(5888):557-60. doi: 10.1126/science.1156973.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18653891" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/enzymology/genetics/*metabolism ; Arabidopsis Proteins/chemistry/genetics/*metabolism ; Brassinosteroids ; Cell Membrane/metabolism ; Cholestanols/metabolism/pharmacology ; Molecular Sequence Data ; Mutagenesis, Insertional ; Phosphorylation ; Plants, Genetically Modified ; Protein Kinases/chemistry/genetics/*metabolism ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases ; Proteomics ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Steroids, Heterocyclic/metabolism/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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