Structure and dynamics of the CGRP receptor in apo and peptide-bound forms
- 9 April 2021
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 372 (6538), 147-+
- https://doi.org/10.1126/science.abf7258
Abstract
G protein-coupled receptors (GPCRs) are key regulators of information transmission between cells and organs. Despite this, we have only limited understanding of the behavior of GPCRs in the apo state and the conformational changes upon agonist binding that lead to G protein recruitment and activation. We expressed and purified unmodified apo and peptide-bound calcitonin gene-related peptide (CGRP) receptors to determine their cryo-EM structures and complemented these with analysis of protein conformational dynamics using hydrogen-deuterium exchange mass spectrometry (HDX-MS) and 3D variance analysis of the cryo-EM data. Together with our previously published structure of the active, Gs-bound, CGRP receptor complex, our work provides important insight into mechanisms of class B1 GPCR activation.Keywords
Funding Information
- Australian Research Council (IC200100052)
- Australian Research Council (DP210101504)
- National Health and Medical Research Council (1120919)
- National Health and Medical Research Council (1159006)
- National Health and Medical Research Council (1150083)
- National Health and Medical Research Council (1154434)
- Skretting Aquaculture Research Centre (IC200100052)
- Skretting Aquaculture Research Centre (DP210101504)
- National Health and Medical Research Council (1120919)
- National Health and Medical Research Council (1159006)
- National Health and Medical Research Council (1150083)
- Precursory Research for Embryonic Science and Technology (18069571)
- Australian Research Council Future Fellowship (FT160100075)
- National Health and Medical Research Council (1155302)
- Japan Science and Technology Agency (18069571)
- Victorian Endowment for Science Knowledge and Innovation
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