Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Structural Characterization of Maize SIRK1 Kinase Domain Reveals an Unusual Architecture of the Activation Segment

Journal Article · · Frontiers in Plant Science
 [1];  [1];  [1];  [1];  [1];  [2];  [1]
  1. Univ. Estadual de Campinas (Brazil)
  2. Univ. Estadual de Campinas (Brazil); Univ. of Oxford (United Kingdom)

Kinases are primary regulators of plant metabolism and excellent targets for plant breeding. However, most kinases, including the abundant receptor-like kinases (RLK), have no assigned role. SIRK1 is a leucine-rich repeat receptor-like kinase (LRR-RLK), the largest family of RLK. In Arabidopsis thaliana, SIRK1 (AtSIRK1) is phosphorylated after sucrose is resupplied to sucrose-starved seedlings and it modulates the sugar response by phosphorylating several substrates. In maize, the ZmSIRK1 expression is altered in response to drought stress. In neither Arabidopsis nor in maize has the function of SIRK1 been completely elucidated. As a first step toward the biochemical characterization of ZmSIRK1, we obtained its recombinant kinase domain, demonstrated that it binds AMP-PNP, a non-hydrolysable ATP-analog, and solved the structure of ZmSIRK1- AMP-PNP co-crystal. The ZmSIRK1 crystal structure revealed a unique conformation for the activation segment. In an attempt to find inhibitors for ZmSIRK1, we screened a focused small molecule library and identified six compounds that stabilized ZmSIRK1 against thermal melt. ITC analysis confirmed that three of these compounds bound to ZmSIRK1 with low micromolar affinity. Solving the 3D structure of ZmSIRK1-AMP-PNP co-crystal provided information on the molecular mechanism of ZmSIRK1 activity. Furthermore, the identification of small molecules that bind this kinase can serve as initial backbone for development of new potent and selective ZmSIRK1 antagonists.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC); Sao Paulo Research Foundation
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1430299
Journal Information:
Frontiers in Plant Science, Journal Name: Frontiers in Plant Science Journal Issue: 05, 2017 Vol. 8; ISSN 1664-462X
Publisher:
Frontiers Research FoundationCopyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (59)

Genome-wide transcriptome analysis of two maize inbred lines under drought stress journal December 2009
Regulation of IRAK-4 kinase activity via autophosphorylation within its activation loop journal January 2007
Structural Characterization of the RLCK Family Member BSK8: A Pseudokinase with an Unprecedented Architecture journal November 2013
High-throughput production of human proteins for crystallization: The SGC experience journal October 2010
Crystal Structures of IRAK-4 Kinase in Complex with Inhibitors: A Serine/Threonine Kinase with Tyrosine as a Gatekeeper journal December 2006
Crystal Structures of c-Src Reveal Features of Its Autoinhibitory Mechanism journal May 1999
Crystal Structure of Hck in Complex with a Src Family–Selective Tyrosine Kinase Inhibitor journal May 1999
High-Resolution Crystal Structures of Human Cyclin-Dependent Kinase 2 with and without ATP:  Bound Waters and Natural Ligand as Guides for Inhibitor Design journal January 1996
Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4 journal August 1970
Crystal structure of cyclin-dependent kinase 2 journal June 1993
Downstream nuclear events in brassinosteroid signalling journal May 2006
Receptor-like kinases shape the plant journal October 2009
Targeted polypharmacology: discovery of dual inhibitors of tyrosine and phosphoinositide kinases journal October 2008
The promise and peril of chemical probes journal July 2015
The use of differential scanning fluorimetry to detect ligand interactions that promote protein stability journal September 2007
A chemical probe toolbox for dissecting the cancer epigenome journal February 2017
Plant immunity: towards an integrated view of plant–pathogen interactions journal June 2010
Programmable RNA targeting by bacterial Argonaute nucleases with unconventional guide binding and cleavage specificity journal August 2022
The selectivity of protein kinase inhibitors: a further update journal November 2007
Surface comparison of active and inactive protein kinases identifies a conserved activation mechanism journal November 2006
Receptor-like kinases from Arabidopsis form a monophyletic gene family related to animal receptor kinases journal August 2001
A Calcium/Calmodulin-regulated Member of the Receptor-like Kinase Family Confers Cold Tolerance in Plants journal December 2009
Arabidopsis thaliana Pattern Recognition Receptors for Bacterial Elongation Factor Tu and Flagellin Can Be Combined to Form Functional Chimeric Receptors journal April 2010
Temporal Analysis of Sucrose-induced Phosphorylation Changes in Plasma Membrane Proteins of Arabidopsis journal June 2007
Dali server: conservation mapping in 3D journal May 2010
Phaser crystallographic software journal July 2007
The Buccaneer software for automated model building. 1. Tracing protein chains journal August 2006
MolProbity : all-atom structure validation for macromolecular crystallography journal December 2009
XDS journal January 2010
Features and development of Coot journal March 2010
Overview of the CCP 4 suite and current developments journal March 2011
BSKs Mediate Signal Transduction from the Receptor Kinase BRI1 in Arabidopsis journal July 2008
A Src-Like Inactive Conformation in the Abl Tyrosine Kinase Domain journal May 2006
An Expanded Maize Gene Expression Atlas based on RNA Sequencing and its Use to Explore Root Development journal January 2016
Genome size variation and polyploidy incidence in the alpine flora from Spain [Genome size variation and polyploidy incidence in the alpine flora from Spain] journal June 2013
Cutting Edge: IL-1 Receptor-Associated Kinase 4 Structures Reveal Novel Features and Multiple Conformations journal February 2007
Crystal Structures of c-Src Reveal Features of Its Autoinhibitory Mechanism journal May 1999
Crystal Structure of Hck in Complex with a Src Family–Selective Tyrosine Kinase Inhibitor journal May 1999
Chemical Inhibition of a Subset of Arabidopsis thaliana GSK3-like Kinases Activates Brassinosteroid Signaling journal June 2009
Structure of the pseudokinase domain of BIR2, a regulator of BAK1-mediated immune signaling in Arabidopsis journal April 2014
Structural basis for the impact of phosphorylation on the activation of plant receptor-like kinase BAK1 journal May 2012
The advantages and disadvantages of being polyploid journal October 2005
Regulation of the c-Abl and Bcr–Abl tyrosine kinases journal January 2004
The selectivity of protein kinase inhibitors: a further update journal November 2007
A Calcium/Calmodulin-regulated Member of the Receptor-like Kinase Family Confers Cold Tolerance in Plants journal December 2009
Arabidopsis thaliana Pattern Recognition Receptors for Bacterial Elongation Factor Tu and Flagellin Can Be Combined to Form Functional Chimeric Receptors journal April 2010
Sucrose-induced Receptor Kinase SIRK1 Regulates a Plasma Membrane Aquaporin in Arabidopsis journal July 2013
Temporal Analysis of Sucrose-induced Phosphorylation Changes in Plasma Membrane Proteins of Arabidopsis journal June 2007
Identification and Functional Analysis of in Vivo Phosphorylation Sites of the Arabidopsis BRASSINOSTEROID-INSENSITIVE1 Receptor Kinase journal May 2005
Phaser crystallographic software journal July 2007
The Buccaneer software for automated model building. 1. Tracing protein chains journal August 2006
MolProbity : all-atom structure validation for macromolecular crystallography journal December 2009
XDS journal January 2010
Features and development of Coot journal March 2010
Overview of the CCP 4 suite and current developments journal March 2011
The MORPHEUS II protein crystallization screen journal June 2015
Genome-wide atlas of transcription during maize development journal March 2011
Crystal structures of the phosphorylated BRI1 kinase domain and implications for brassinosteroid signal initiation journal March 2014
Linking Crystallographic Model and Data Quality journal May 2012

Cited By (5)


Similar Records

LIK1, A CERK1-Interacting Kinase, Regulates Plant Immune Responses in Arabidopsis
Journal Article · Fri Jul 18 00:00:00 EDT 2014 · PLoS ONE · OSTI ID:1904703

Mutations in FLS2 Ser-938 Dissect Signaling Activation in FLS2-Mediated Arabidopsis Immunity
Journal Article · Thu Apr 18 00:00:00 EDT 2013 · PLoS Pathogens · OSTI ID:1904701

Modes of Action and Functions of ERECTA-family Receptor-like Kinases in Plant Organ Growth and Development
Technical Report · Mon Apr 30 20:00:00 EDT 2012 · OSTI ID:1041198