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- PDB-8jis: Cryo-EM structure of the GLP-1R/GCGR dual agonist peptide15-bound... -

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Entry
Database: PDB / ID: 8jis
TitleCryo-EM structure of the GLP-1R/GCGR dual agonist peptide15-bound human GLP-1R-Gs complex
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Glucagon-like peptide 1 receptorGlucagon-like peptide-1 receptor
  • Nanobody 35Single-domain antibody
  • Peptide 15
KeywordsSTRUCTURAL PROTEIN / G protein-coupled receptor / ligand recognition / receptor activation / unimolecular dual agonist
Function / homology
Function and homology information


glucagon-like peptide 1 receptor activity / glucagon receptor activity / hormone secretion / positive regulation of blood pressure / G-protein activation / Activation of the phototransduction cascade / : / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste ...glucagon-like peptide 1 receptor activity / glucagon receptor activity / hormone secretion / positive regulation of blood pressure / G-protein activation / Activation of the phototransduction cascade / : / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Ca2+ pathway / Activation of G protein gated Potassium channels / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G alpha (z) signalling events / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / post-translational protein targeting to membrane, translocation / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / G alpha (i) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Glucagon-type ligand receptors / alkylglycerophosphoethanolamine phosphodiesterase activity / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (12/13) signalling events / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Thrombin signalling through proteinase activated receptors (PARs) / Ca2+ pathway / G alpha (z) signalling events / Extra-nuclear estrogen signaling / G alpha (s) signalling events / regulation of heart contraction / G alpha (q) signalling events / photoreceptor outer segment membrane / response to psychosocial stress / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / spectrin binding / Vasopressin regulates renal water homeostasis via Aquaporins / peptide hormone binding / cAMP-mediated signaling / photoreceptor outer segment / cardiac muscle cell apoptotic process / activation of adenylate cyclase activity / photoreceptor inner segment / negative regulation of blood pressure / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Glucagon-type ligand receptors / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / sensory perception of taste / G-protein beta-subunit binding / heterotrimeric G-protein complex / transmembrane signaling receptor activity / signaling receptor complex adaptor activity / retina development in camera-type eye / GTPase binding / cell body / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration / cellular response to hypoxia / G alpha (s) signalling events / cell population proliferation / learning or memory / cell surface receptor signaling pathway / G protein-coupled receptor signaling pathway / GTPase activity / dendrite / protein-containing complex binding / membrane / plasma membrane / cytoplasm
Similarity search - Function
: / 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, 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, 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 / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Glucagon-like peptide 1 receptor / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Similarity search - Component
Biological speciesHomo sapiens (human)
Rattus norvegicus (Norway rat)
Bos taurus (cattle)
Escherichia coli (E. coli)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.46 Å
AuthorsYang, L. / Zhou, Q.T. / Dai, A.T. / Zhao, F.H. / Chang, R.L. / Ying, T.L. / Wu, B.L. / Yang, D.H. / Wang, M.W. / Cong, Z.T.
Funding support China, 8items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)81872915 China
National Natural Science Foundation of China (NSFC)82073904 China
National Natural Science Foundation of China (NSFC)82273961 China
National Natural Science Foundation of China (NSFC)32200576 China
National Natural Science Foundation of China (NSFC)82273985 China
National Natural Science Foundation of China (NSFC)82121005 China
National Natural Science Foundation of China (NSFC)81973373 China
National Natural Science Foundation of China (NSFC)21704064 China
CitationJournal: Proc Natl Acad Sci U S A / Year: 2023
Title: Structural analysis of the dual agonism at GLP-1R and GCGR.
Authors: Yang Li / Qingtong Zhou / Antao Dai / Fenghui Zhao / Rulue Chang / Tianlei Ying / Beili Wu / Dehua Yang / Ming-Wei Wang / Zhaotong Cong /
Abstract: Glucagon-like peptide-1 receptor (GLP-1R) and glucagon receptor (GCGR), two members of class B1 G protein-coupled receptors, play important roles in glucose homeostasis and energy metabolism. They ...Glucagon-like peptide-1 receptor (GLP-1R) and glucagon receptor (GCGR), two members of class B1 G protein-coupled receptors, play important roles in glucose homeostasis and energy metabolism. They share a high degree of sequence homology but have different functionalities. Unimolecular dual agonists of both receptors developed recently displayed better clinical efficacies than that of monotherapy. To study the underlying molecular mechanisms, we determined high-resolution cryo-electron microscopy structures of GLP-1R or GCGR in complex with heterotrimeric G protein and three GLP-1R/GCGR dual agonists including peptide 15, MEDI0382 (cotadutide) and SAR425899 with variable activating profiles at GLP-1R versus GCGR. Compared with related structures reported previously and supported by our published pharmacological data, key residues responsible for ligand recognition and dual agonism were identified. Analyses of peptide conformational features revealed a difference in side chain orientations within the first three residues, indicating that distinct engagements in the deep binding pocket are required to achieve receptor selectivity. The middle region recognizes extracellular loop 1 (ECL1), ECL2, and the top of transmembrane helix 1 (TM1) resulting in specific conformational changes of both ligand and receptor, especially the dual agonists reshaped ECL1 conformation of GLP-1R relative to that of GCGR, suggesting an important role of ECL1 interaction in executing dual agonism. Structural investigation of lipid modification showed a better interaction between lipid moiety of MEDI0382 and TM1-TM2 cleft, in line with its increased potency at GCGR than SAR425899. Together, the results provide insightful information for the design and development of improved therapeutics targeting these two receptors simultaneously.
History
DepositionMay 27, 2023Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Nov 8, 2023Provider: repository / Type: Initial release

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Structure visualization

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Assembly

Deposited unit
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
P: Peptide 15
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
N: Nanobody 35
R: Glucagon-like peptide 1 receptor


Theoretical massNumber of molelcules
Total (without water)148,0896
Polymers148,0896
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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

#1: Protein Guanine nucleotide-binding protein G(s) subunit alpha isoforms short


Mass: 41401.863 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Spodoptera frugiperda (fall armyworm)
#2: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 37198.656 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Gnb1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P54311
#4: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 6261.229 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bos taurus (cattle) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P63212

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

#3: Protein/peptide Peptide 15 /


Mass: 3385.689 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#5: Antibody Nanobody 35 / Single-domain antibody


Mass: 13711.284 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Production host: Escherichia coli (E. coli)
#6: Protein Glucagon-like peptide 1 receptor / Glucagon-like peptide-1 receptor / GLP-1 receptor / GLP-1-R / GLP-1R


Mass: 46130.492 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GLP1R / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P43220

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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: Cryo-EM structure of the GLP-1R/GCGR dual agonist peptide 15-bound human GLP-1R-Gs complex
Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

MicroscopyModel: FEI TITAN
Electron gunElectron source: OTHER / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2200 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 80 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.46 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1252175 / Symmetry type: POINT

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