Neutron Diffraction Reveals Hydrogen Bonds Critical for cGMP-Selective Activation: Insights for cGMP-Dependent Protein Kinase Agonist Design
Abstract
High selectivity of cyclic-nucleotide binding (CNB) domains for cAMP and cGMP are required for segregating signaling pathways; however, the mechanism of selectivity remains unclear. To investigate the mechanism of high selectivity in cGMP-dependent protein kinase (PKG), we determined a room-temperature joint X-ray/neutron (XN) structure of PKG Iβ CNB-B, a domain 200-fold selective for cGMP over cAMP, bound to cGMP (2.2 Å), and a low-temperature X-ray structure of CNB-B with cAMP (1.3 Å). Finally, the XN structure directly describes the hydrogen bonding interactions that modulate high selectivity for cGMP, while the structure with cAMP reveals that all these contacts are disrupted, explaining its low affinity for cAMP.
- Authors:
-
- Verna and Mars McClean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77004, United States
- Biology and Soft Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Institute Laue-Langevin, 71 Avenue des Martyrs, 38000, Grenoble, France
- Berkeley Center for Structural Biology, Lawrence Berkeley National Laboratory, Berkeley, California, United States
- Verna and Mars McClean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77004, United States, Department of Pharmacology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77004, United States
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1163250
- Alternate Identifier(s):
- OSTI ID: 1257634
- Grant/Contract Number:
- AC02-05CH11231; R01GM90161
- Resource Type:
- Published Article
- Journal Name:
- Biochemistry
- Additional Journal Information:
- Journal Name: Biochemistry Journal Volume: 53 Journal Issue: 43; Journal ID: ISSN 0006-2960
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES
Citation Formats
Huang, Gilbert Y., Gerlits, Oksana O., Blakeley, Matthew P., Sankaran, Banumathi, Kovalevsky, Andrey Y., and Kim, Choel. Neutron Diffraction Reveals Hydrogen Bonds Critical for cGMP-Selective Activation: Insights for cGMP-Dependent Protein Kinase Agonist Design. United States: N. p., 2014.
Web. doi:10.1021/bi501012v.
Huang, Gilbert Y., Gerlits, Oksana O., Blakeley, Matthew P., Sankaran, Banumathi, Kovalevsky, Andrey Y., & Kim, Choel. Neutron Diffraction Reveals Hydrogen Bonds Critical for cGMP-Selective Activation: Insights for cGMP-Dependent Protein Kinase Agonist Design. United States. https://doi.org/10.1021/bi501012v
Huang, Gilbert Y., Gerlits, Oksana O., Blakeley, Matthew P., Sankaran, Banumathi, Kovalevsky, Andrey Y., and Kim, Choel. Wed .
"Neutron Diffraction Reveals Hydrogen Bonds Critical for cGMP-Selective Activation: Insights for cGMP-Dependent Protein Kinase Agonist Design". United States. https://doi.org/10.1021/bi501012v.
@article{osti_1163250,
title = {Neutron Diffraction Reveals Hydrogen Bonds Critical for cGMP-Selective Activation: Insights for cGMP-Dependent Protein Kinase Agonist Design},
author = {Huang, Gilbert Y. and Gerlits, Oksana O. and Blakeley, Matthew P. and Sankaran, Banumathi and Kovalevsky, Andrey Y. and Kim, Choel},
abstractNote = {High selectivity of cyclic-nucleotide binding (CNB) domains for cAMP and cGMP are required for segregating signaling pathways; however, the mechanism of selectivity remains unclear. To investigate the mechanism of high selectivity in cGMP-dependent protein kinase (PKG), we determined a room-temperature joint X-ray/neutron (XN) structure of PKG Iβ CNB-B, a domain 200-fold selective for cGMP over cAMP, bound to cGMP (2.2 Å), and a low-temperature X-ray structure of CNB-B with cAMP (1.3 Å). Finally, the XN structure directly describes the hydrogen bonding interactions that modulate high selectivity for cGMP, while the structure with cAMP reveals that all these contacts are disrupted, explaining its low affinity for cAMP.},
doi = {10.1021/bi501012v},
journal = {Biochemistry},
number = 43,
volume = 53,
place = {United States},
year = {2014},
month = {10}
}
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Publisher's Version of Record
https://doi.org/10.1021/bi501012v
https://doi.org/10.1021/bi501012v
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Cited by: 22 works
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