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Title: Perturbation of the interactions of calmodulin with GRK5 using a natural product chemical probe

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America

G protein-coupled receptor (GPCR) kinases (GRKs) are responsible for initiating desensitization of activated GPCRs. GRK5 is potently inhibited by the calcium-sensing protein calmodulin (CaM), which leads to nuclear translocation of GRK5 and promotion of cardiac hypertrophy. In this paper, we report the architecture of the Ca2+·CaM– GRK5 complex determined by small-angle X-ray scattering and negative-stain electron microscopy. Ca2+·CaM binds primarily to the small lobe of the kinase domain of GRK5 near elements critical for receptor interaction and membrane association, thereby inhibiting receptor phosphorylation while activating the kinase for phosphorylation of soluble substrates. To define the role of each lobe of Ca2+·CaM, we utilized the natural product malbrancheamide as a chemical probe to show that the C-terminal lobe of Ca2+·CaM regulates membrane binding while the N-terminal lobe regulates receptor phosphorylation and kinase domain activation. In cells, malbrancheamide attenuated GRK5 nuclear translocation and effectively blocked the hypertrophic response, demonstrating the utility of this natural product and its derivatives in probing Ca2+·CaM-dependent hypertrophy.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Institutes of Health (NIH); US Department of Education; Rackham Predoctoral Fellowship; Hans W. Vahlteich Professorship; Walther Cancer Foundation; LSI Cubed; USDOE Office of Science (SC); National Institute of General Medical Sciences (NIGMS); Michigan Economic Development Corporation and Michigan Technology Tri-Corridor
Grant/Contract Number:
HL071818; HL122416; CA221289; CA70375; R35 GM118101; AC02-06CH11357; 1S10OD018090-01; 085P1000817
OSTI ID:
1557319
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 116, Issue 32; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (40)

Recognition in the Face of Diversity: Interactions of Heterotrimeric G proteins and G Protein-coupled Receptor (GPCR) Kinases with Activated GPCRs journal January 2011
GRK5-Mediated Exacerbation of Pathological Cardiac Hypertrophy Involves Facilitation of Nuclear NFAT Activity journal December 2014
Ab initio electron density determination directly from solution scattering data journal January 2018
Structure-Based Design, Synthesis, and Biological Evaluation of Highly Selective and Potent G Protein-Coupled Receptor Kinase 2 Inhibitors journal November 2015
Function and Structure of MalA/MalA′, Iterative Halogenases for Late-Stage C–H Functionalization of Indole Alkaloids journal August 2017
Nuclear Translocation of Cardiac G Protein-Coupled Receptor Kinase 5 Downstream of Select Gq-Activating Hypertrophic Ligands Is a Calmodulin-Dependent Process journal March 2013
CRYSOL – a Program to Evaluate X-ray Solution Scattering of Biological Macromolecules from Atomic Coordinates journal December 1995
Molecular basis for activation of G protein-coupled receptor kinases journal August 2010
Prevalence of left-ventricular hypertrophy in hypertension: an updated review of echocardiographic studies journal November 2011
Role of the Amino Terminus of G Protein-Coupled Receptor Kinase 2 in Receptor Phosphorylation journal August 2009
The many structural faces of calmodulin: a multitasking molecular jackknife journal July 2014
Insights into molecular interactions between CaM and its inhibitors from molecular dynamics simulations and experimental data journal February 2015
Structure-Function Analysis of G Protein-coupled Receptor Kinase-5: ROLE OF THE CARBOXYL TERMINUS IN KINASE REGULATION journal November 1998
Hitchhiking on the heptahelical highway: structure and function of 7TM receptor complexes journal April 2016
G protein-coupled receptor kinases: Past, present and future journal January 2018
The Evolving Impact of G Protein-Coupled Receptor Kinases in Cardiac Health and Disease journal April 2015
Accurate SAXS Profile Computation and its Assessment by Contrast Variation Experiments journal August 2013
Phosphatidylinositol 4,5-Bisphosphate (PIP 2 )-enhanced G Protein-coupled Receptor Kinase (GRK) Activity: LOCATION, STRUCTURE, AND REGULATION OF THE PIP 2 BINDING SITE DISTINGUISHES THE GRK SUBFAMILIES journal October 1996
Uncovering G protein-coupled receptor kinase-5 as a histone deacetylase kinase in the nucleus of cardiomyocytes journal August 2008
Characterizing flexible and intrinsically unstructured biological macromolecules by SAS using the Porod-Debye law journal April 2011
Membrane Orientation and Binding Determinants of G Protein-Coupled Receptor Kinase 5 as Assessed by Combined Vibrational Spectroscopic Studies journal November 2013
Malbrancheamide, a new calmodulin inhibitor from the fungus Malbranchea aurantiaca journal February 2006
Atomic Structure of GRK5 Reveals Distinct Structural Features Novel for G Protein-coupled Receptor Kinases journal June 2015
Regulation of the G Protein-coupled Receptor Kinase GRK5 by Protein Kinase C journal February 1997
G Protein-Coupled Receptor Kinase 5 Contains a DNA-Binding Nuclear Localization Sequence journal November 2004
The Amino-Terminal Domain of GRK5 Inhibits Cardiac Hypertrophy through the Regulation of Calcium-Calmodulin Dependent Transcription Factors journal March 2018
Regulation of G-protein-coupled receptor kinase subtypes by calcium sensor proteins journal January 1999
Inference of Macromolecular Assemblies from Crystalline State journal September 2007
Fluorescence, circular dichroism, NMR, and docking studies of the interaction of the alkaloid malbrancheamide with calmodulin journal October 2010
Target selectivity in EF-hand calcium binding proteins journal December 2004
Regulation of G Protein-Coupled Receptor Kinases journal February 2000
Synucleins Are a Novel Class of Substrates for G Protein-coupled Receptor Kinases journal June 2000
Myelin basic protein: a multifunctional protein journal June 2006
A Predicted Amphipathic Helix Mediates Plasma Membrane Localization of GRK5 journal February 2004
Inhibition of G Protein-coupled Receptor Kinase Subtypes by Ca 2+ /Calmodulin journal November 1996
Regulation of G Protein-coupled Receptor Kinases by Calmodulin and Localization of the Calmodulin Binding Domain journal July 1997
Localization of the Sites for Ca 2+ -Binding Proteins on G Protein-Coupled Receptor Kinases journal September 1998
Crystal Structure of G Protein-coupled Receptor Kinase 5 in Complex with a Rationally Designed Inhibitor journal June 2015
Regulation of CaV2 calcium channels by G protein coupled receptors journal July 2013
AB Initio Electron Density Determination Directly from Solution Scattering Data journal February 2020