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- PDB-6b3j: 3.3 angstrom phase-plate cryo-EM structure of a biased agonist-bo... -

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Entry
Database: PDB / ID: 6b3j
Title3.3 angstrom phase-plate cryo-EM structure of a biased agonist-bound human GLP-1 receptor-Gs complex
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Exendin-P5
  • Glucagon-like peptide 1 receptor
  • Nanobody 35
KeywordsSIGNALING PROTEIN / class B G protein-coupled receptor / agonist-receptor-G protein ternary complex / glucagon-like peptide 1 receptor / active-state G protein-coupled receptor / phase plate / phase contrast / single particle cryo-em
Function / homology
Function and homology information


glucagon-like peptide 1 receptor activity / glucagon receptor activity / hormone secretion / positive regulation of blood pressure / post-translational protein targeting to membrane, translocation / response to psychosocial stress / regulation of heart contraction / peptide hormone binding / PKA activation in glucagon signalling / hair follicle placode formation ...glucagon-like peptide 1 receptor activity / glucagon receptor activity / hormone secretion / positive regulation of blood pressure / post-translational protein targeting to membrane, translocation / response to psychosocial stress / regulation of heart contraction / peptide hormone binding / PKA activation in glucagon signalling / hair follicle placode formation / mu-type opioid receptor binding / developmental growth / corticotropin-releasing hormone receptor 1 binding / intracellular transport / D1 dopamine receptor binding / Hedgehog 'off' state / beta-2 adrenergic receptor binding / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / adenylate cyclase activator activity / negative regulation of blood pressure / cAMP-mediated signaling / trans-Golgi network membrane / ionotropic glutamate receptor binding / insulin-like growth factor receptor binding / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / bone development / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G-protein activation / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / cognition / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / platelet aggregation / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / transmembrane signaling receptor activity / GPER1 signaling / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / sensory perception of smell / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / positive regulation of cold-induced thermogenesis / G alpha (i) signalling events / positive regulation of cytosolic calcium ion concentration / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / learning or memory / cell surface receptor signaling pathway / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / GTP binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytoplasm / cytosol
Similarity search - Function
Transducin (heterotrimeric G protein), gamma chain / G Protein Gi Gamma 2 / : / GPCR, family 2, glucagon-like peptide-1 receptor / GPCR, family 2, glucagon-like peptide-1/glucagon receptor / G-protein coupled receptors family 2 signature 1. / Hormone receptor domain / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors ...Transducin (heterotrimeric G protein), gamma chain / G Protein Gi Gamma 2 / : / GPCR, family 2, glucagon-like peptide-1 receptor / GPCR, family 2, glucagon-like peptide-1/glucagon receptor / G-protein coupled receptors family 2 signature 1. / Hormone receptor domain / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / GPCR family 2, extracellular hormone receptor domain superfamily / G-protein coupled receptors family 2 signature 2. / GPCR, family 2, secretin-like, conserved site / GPCR, family 2, secretin-like / 7 transmembrane receptor (Secretin family) / GPCR, family 2-like / G-protein coupled receptors family 2 profile 2. / G-protein alpha subunit, group S / YVTN repeat-like/Quinoprotein amine dehydrogenase / 7 Propeller / Methylamine Dehydrogenase; Chain H / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / Few Secondary Structures / Irregular / G-protein beta WD-40 repeat / P-loop containing nucleotide triphosphate hydrolases / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase / Rossmann fold / 3-Layer(aba) Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Glucagon-like peptide 1 receptor / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Similarity search - Component
Biological speciesHomo sapiens (human)
Lama glama (llama)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsLiang, Y.L. / Khoshouei, M. / Glukhova, A. / Furness, S.G.B. / Koole, C. / Zhao, P. / Clydesdale, L. / Thal, D.M. / Radjainia, M. / Danev, R. ...Liang, Y.L. / Khoshouei, M. / Glukhova, A. / Furness, S.G.B. / Koole, C. / Zhao, P. / Clydesdale, L. / Thal, D.M. / Radjainia, M. / Danev, R. / Baumeister, W. / Wang, M.W. / Miller, L.J. / Christopoulos, A. / Sexton, P.M. / Wootten, D.
Funding support Australia, 4items
OrganizationGrant numberCountry
National Health and Medical Research Council (NHMRC, Australia)1061044 Australia
National Health and Medical Research Council (NHMRC, Australia)1065410 Australia
National Health and Medical Research Council (NHMRC, Australia)1126857 Australia
National Health and Medical Research Council (NHMRC, Australia)1055134 Australia
CitationJournal: Nature / Year: 2018
Title: Phase-plate cryo-EM structure of a biased agonist-bound human GLP-1 receptor-Gs complex.
Authors: Yi-Lynn Liang / Maryam Khoshouei / Alisa Glukhova / Sebastian G B Furness / Peishen Zhao / Lachlan Clydesdale / Cassandra Koole / Tin T Truong / David M Thal / Saifei Lei / Mazdak Radjainia ...Authors: Yi-Lynn Liang / Maryam Khoshouei / Alisa Glukhova / Sebastian G B Furness / Peishen Zhao / Lachlan Clydesdale / Cassandra Koole / Tin T Truong / David M Thal / Saifei Lei / Mazdak Radjainia / Radostin Danev / Wolfgang Baumeister / Ming-Wei Wang / Laurence J Miller / Arthur Christopoulos / Patrick M Sexton / Denise Wootten /
Abstract: The class B glucagon-like peptide-1 (GLP-1) G protein-coupled receptor is a major target for the treatment of type 2 diabetes and obesity. Endogenous and mimetic GLP-1 peptides exhibit biased agonism- ...The class B glucagon-like peptide-1 (GLP-1) G protein-coupled receptor is a major target for the treatment of type 2 diabetes and obesity. Endogenous and mimetic GLP-1 peptides exhibit biased agonism-a difference in functional selectivity-that may provide improved therapeutic outcomes. Here we describe the structure of the human GLP-1 receptor in complex with the G protein-biased peptide exendin-P5 and a Gα heterotrimer, determined at a global resolution of 3.3 Å. At the extracellular surface, the organization of extracellular loop 3 and proximal transmembrane segments differs between our exendin-P5-bound structure and previous GLP-1-bound GLP-1 receptor structure. At the intracellular face, there was a six-degree difference in the angle of the Gαs-α5 helix engagement between structures, which was propagated across the G protein heterotrimer. In addition, the structures differed in the rate and extent of conformational reorganization of the Gα protein. Our structure provides insights into the molecular basis of biased agonism.
History
DepositionSep 22, 2017Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 21, 2018Provider: repository / Type: Initial release
Revision 1.1Feb 28, 2018Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.2Mar 7, 2018Group: Database references / Category: citation / citation_author
Item: _citation.journal_id_ISSN / _citation.journal_volume ..._citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.3Jan 15, 2020Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
R: Glucagon-like peptide 1 receptor
P: Exendin-P5
A: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
N: Nanobody 35


Theoretical massNumber of molelcules
Total (without water)168,1966
Polymers168,1966
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area15970 Å2
ΔGint-100 kcal/mol
Surface area53870 Å2

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Components

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Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABG

#3: Protein Guanine nucleotide-binding protein G(s) subunit alpha isoforms short / Adenylate cyclase-stimulating G alpha protein


Mass: 45683.434 Da / Num. of mol.: 1
Mutation: S54N, G226A, E268A, N271K, N274D, R280K, T284D, I285T
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAS, GNAS1, GSP / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P63092
#4: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 38534.062 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P62873
#5: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7861.143 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P59768

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Protein / Protein/peptide / Antibody , 3 types, 3 molecules RPN

#1: Protein Glucagon-like peptide 1 receptor / GLP-1R


Mass: 56748.418 Da / Num. of mol.: 1 / Fragment: residues 24-463
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GLP1R / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P43220
#2: Protein/peptide Exendin-P5


Mass: 4228.670 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#6: Antibody Nanobody 35


Mass: 15140.742 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lama glama (llama) / Production host: Escherichia coli (E. coli)

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Complex of a full-length, active-state glucagon-like peptide-1 receptor with exendin-P5 ligand, heterotrimeric Gs protein and nanobody 35.
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.15 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 7.5
SpecimenConc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Calibrated magnification: 47170 X / Cs: 2.7 mm / C2 aperture diameter: 50 µm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 8 sec. / Electron dose: 50 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2793
EM imaging opticsEnergyfilter name: Gatan Quantum energy filter / Phase plate: The images were taken at 500 defocus
Image scansWidth: 3838 / Height: 3710 / Movie frames/image: 50

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Processing

SoftwareName: PHENIX / Version: 1.12_2829: / Classification: refinement
EM software
IDNameVersionCategory
7Coot0.8.6model fitting
13PHENIX1.12-2829model refinement
CTF correctionDetails: Phase plate CTF correction / Type: NONE
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 614883 / Symmetry type: POINT
Atomic model buildingDetails: 3C5T was rigid body fitted with minimal manual adjustments. The rest of the chain R and chains A,B,G,N were extensively remodeled. Chain P was built de novo.
Atomic model building
IDPDB-IDPdb chain-ID 3D fitting-IDPdb chain residue range
15VAI

5vai

R1130-423
23C5T

3c5t

R130-128
33SN6

3sn6

A1
43SN6

3sn6

B1
53SN6

3sn6

G1
63SN6

3sn6

N1
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0079246
ELECTRON MICROSCOPYf_angle_d0.98712536
ELECTRON MICROSCOPYf_dihedral_angle_d5.145446
ELECTRON MICROSCOPYf_chiral_restr0.0611376
ELECTRON MICROSCOPYf_plane_restr0.0071597

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