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- PDB-6uun: CryoEM Structure of the active Adrenomedullin 1 receptor G protei... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6uun | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Title | CryoEM Structure of the active Adrenomedullin 1 receptor G protein complex with adrenomedullin peptide | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | MEMBRANE PROTEIN / GPCR / adrenomedullin receptor complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Function / homology | ![]() adrenomedullin receptor binding / positive regulation of progesterone biosynthetic process / basement membrane assembly / cellular response to sucrose stimulus / adrenomedullin binding / CGRP receptor complex / neuron projection regeneration / adrenomedullin receptor activity / adrenomedullin receptor complex / vascular associated smooth muscle cell development ...adrenomedullin receptor binding / positive regulation of progesterone biosynthetic process / basement membrane assembly / cellular response to sucrose stimulus / adrenomedullin binding / CGRP receptor complex / neuron projection regeneration / adrenomedullin receptor activity / adrenomedullin receptor complex / vascular associated smooth muscle cell development / adrenomedullin receptor signaling pathway / calcitonin receptor activity / calcitonin gene-related peptide receptor signaling pathway / vascular associated smooth muscle cell proliferation / calcitonin gene-related peptide receptor activity / branching involved in labyrinthine layer morphogenesis / amylin receptor 2 signaling pathway / regulation of systemic arterial blood pressure / positive regulation of vasculogenesis / bicellular tight junction assembly / Calcitonin-like ligand receptors / response to ether / regulation of the force of heart contraction / regulation of G protein-coupled receptor signaling pathway / regulation of urine volume / G protein-coupled receptor internalization / adherens junction assembly / negative regulation of vascular permeability / sprouting angiogenesis / negative regulation of vasoconstriction / response to starvation / odontogenesis of dentin-containing tooth / androgen metabolic process / PKA activation in glucagon signalling / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / hair follicle placode formation / cellular response to vascular endothelial growth factor stimulus / developmental growth / D1 dopamine receptor binding / animal organ regeneration / intracellular transport / vascular endothelial cell response to laminar fluid shear stress / negative regulation of endothelial cell apoptotic process / vasculogenesis / positive regulation of heart rate / renal water homeostasis / cellular response to hormone stimulus / response to glucocorticoid / Hedgehog 'off' state / coreceptor activity / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / clathrin-coated pit / positive regulation of vascular associated smooth muscle cell proliferation / regulation of insulin secretion / cellular response to glucagon stimulus / adenylate cyclase activator activity / trans-Golgi network membrane / protein localization to plasma membrane / female pregnancy / intracellular protein transport / response to insulin / neural tube closure / negative regulation of inflammatory response to antigenic stimulus / G protein-coupled receptor activity / hormone activity / bone development / receptor internalization / regulation of blood pressure / G-protein beta/gamma-subunit complex binding / platelet aggregation / Olfactory Signaling Pathway / cognition / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / positive regulation of angiogenesis / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / calcium ion transport / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 Similarity search - Function | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Biological species | ![]() ![]() ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Belousoff, M.J. / Liang, Y.L. / Sexton, P. / Danev, R. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structure and Dynamics of Adrenomedullin Receptors AM and AM Reveal Key Mechanisms in the Control of Receptor Phenotype by Receptor Activity-Modifying Proteins. Authors: Yi-Lynn Liang / Matthew J Belousoff / Madeleine M Fletcher / Xin Zhang / Maryam Khoshouei / Giuseppe Deganutti / Cassandra Koole / Sebastian G B Furness / Laurence J Miller / Debbie L Hay / ...Authors: Yi-Lynn Liang / Matthew J Belousoff / Madeleine M Fletcher / Xin Zhang / Maryam Khoshouei / Giuseppe Deganutti / Cassandra Koole / Sebastian G B Furness / Laurence J Miller / Debbie L Hay / Arthur Christopoulos / Christopher A Reynolds / Radostin Danev / Denise Wootten / Patrick M Sexton / ![]() ![]() ![]() ![]() ![]() ![]() ![]() Abstract: Adrenomedullin (AM) and calcitonin gene-related peptide (CGRP) receptors are critically important for metabolism, vascular tone, and inflammatory response. AM receptors are also required for normal ...Adrenomedullin (AM) and calcitonin gene-related peptide (CGRP) receptors are critically important for metabolism, vascular tone, and inflammatory response. AM receptors are also required for normal lymphatic and blood vascular development and angiogenesis. They play a pivotal role in embryo implantation and fertility and can provide protection against hypoxic and oxidative stress. CGRP and AM receptors are heterodimers of the calcitonin receptor-like receptor (CLR) and receptor activity-modifying protein 1 (RAMP1) (CGRPR), as well as RAMP2 or RAMP3 (AMR and AMR, respectively). However, the mechanistic basis for RAMP modulation of CLR phenotype is unclear. In this study, we report the cryo-EM structure of the AMR in complex with AM and Gs at a global resolution of 3.0 Å, and structures of the AMR in complex with either AM or intermedin/adrenomedullin 2 (AM2) and Gs at 2.4 and 2.3 Å, respectively. The structures reveal distinctions in the primary orientation of the extracellular domains (ECDs) relative to the receptor core and distinct positioning of extracellular loop 3 (ECL3) that are receptor-dependent. Analysis of dynamic data present in the cryo-EM micrographs revealed additional distinctions in the extent of mobility of the ECDs. Chimeric exchange of the linker region of the RAMPs connecting the TM helix and the ECD supports a role for this segment in controlling receptor phenotype. Moreover, a subset of the motions of the ECD appeared coordinated with motions of the G protein relative to the receptor core, suggesting that receptor ECD dynamics could influence G protein interactions. This work provides fundamental advances in our understanding of GPCR function and how this can be allosterically modulated by accessory proteins. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 229.3 KB | Display | ![]() |
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PDB format | ![]() | 170.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 20883MC ![]() 6uusC ![]() 6uvaC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABG
#1: Protein | Mass: 45683.434 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 38534.062 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#4: Protein | Mass: 7861.143 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Protein , 3 types, 3 molecules EPR
#3: Protein | Mass: 17839.375 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#6: Protein | Mass: 6038.813 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
#7: Protein | Mass: 56274.520 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Antibody , 1 types, 1 molecules N
#5: Antibody | Mass: 15140.742 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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-Details
Has protein modification | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Molecular weight | Experimental value: NO | ||||||||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.4 | ||||||||||||||||||||||||||||||
Specimen | Conc.: 4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||
Specimen support | Details: unspecified | ||||||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 68 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.16_3549: / Classification: refinement | ||||||||||||||||||||||||
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EM software | Name: PHENIX / Category: model refinement | ||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 111000 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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