7FIN

Cryo-EM structure of the GIPR/GLP-1R/GCGR triagonist peptide 20-bound human GIPR-Gs complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural insights into multiplexed pharmacological actions of tirzepatide and peptide 20 at the GIP, GLP-1 or glucagon receptors.

Zhao, F.Zhou, Q.Cong, Z.Hang, K.Zou, X.Zhang, C.Chen, Y.Dai, A.Liang, A.Ming, Q.Wang, M.Chen, L.N.Xu, P.Chang, R.Feng, W.Xia, T.Zhang, Y.Wu, B.Yang, D.Zhao, L.Xu, H.E.Wang, M.W.

(2022) Nat Commun 13: 1057-1057

  • DOI: https://doi.org/10.1038/s41467-022-28683-0
  • Primary Citation of Related Structures:  
    7FIM, 7FIN, 7FIY, 7V35, 7VAB, 7VBH, 7VBI

  • PubMed Abstract: 

    Glucose homeostasis, regulated by glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon (GCG) is critical to human health. Several multi-targeting agonists at GIPR, GLP-1R or GCGR, developed to maximize metabolic benefits with reduced side-effects, are in clinical trials to treat type 2 diabetes and obesity. To elucidate the molecular mechanisms by which tirzepatide, a GIPR/GLP-1R dual agonist, and peptide 20, a GIPR/GLP-1R/GCGR triagonist, manifest their multiplexed pharmacological actions over monoagonists such as semaglutide, we determine cryo-electron microscopy structures of tirzepatide-bound GIPR and GLP-1R as well as peptide 20-bound GIPR, GLP-1R and GCGR. The structures reveal both common and unique features for the dual and triple agonism by illustrating key interactions of clinical relevance at the near-atomic level. Retention of glucagon function is required to achieve such an advantage over GLP-1 monotherapy. Our findings provide valuable insights into the structural basis of functional versatility of tirzepatide and peptide 20.


  • Organizational Affiliation

    School of Pharmacy, Fudan University, Shanghai, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Gastric inhibitory polypeptide receptor,human glucose-dependent insulinotropic polypeptide receptorA [auth R]573Homo sapiensMutation(s): 1 
Gene Names: GIPR
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P48546 (Homo sapiens)
Explore P48546 
Go to UniProtKB:  P48546
PHAROS:  P48546
GTEx:  ENSG00000010310 
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UniProt GroupP48546
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Peptide 20B [auth P]39Homo sapiensMutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(s) subunit alpha isoforms shortC [auth A]394Bos taurusMutation(s): 8 
Gene Names: GNASGNAS1
EC: 3.6.5
Membrane Entity: Yes 
UniProt
Find proteins for P04896 (Bos taurus)
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UniProt GroupP04896
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1D [auth B]371Rattus norvegicusMutation(s): 0 
Gene Names: Gnb1
UniProt
Find proteins for P54311 (Rattus norvegicus)
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UniProt GroupP54311
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2E [auth G]71Bos taurusMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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Find proteins for P63212 (Bos taurus)
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UniProt GroupP63212
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Nanobody-35F [auth N]140synthetic constructMutation(s): 0 
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Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CLR
Query on CLR

Download Ideal Coordinates CCD File 
G [auth R]
H [auth R]
I [auth R]
J [auth R]
K [auth R]
G [auth R],
H [auth R],
I [auth R],
J [auth R],
K [auth R],
L [auth R],
M [auth R]
CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
GGL
Query on GGL

Download Ideal Coordinates CCD File 
N [auth P]GAMMA-L-GLUTAMIC ACID
C5 H9 N O4
WHUUTDBJXJRKMK-VKHMYHEASA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
AIB
Query on AIB
B [auth P]L-PEPTIDE LINKINGC4 H9 N O2ALA
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China81872915
National Natural Science Foundation of China (NSFC)China82073904
National Natural Science Foundation of China (NSFC)China32071203
National Natural Science Foundation of China (NSFC)China81922071
National Natural Science Foundation of China (NSFC)China81773792
National Natural Science Foundation of China (NSFC)China81973373
National Natural Science Foundation of China (NSFC)China81922071 (Y.Z.), 81773792 (D.Y.), 81973373 (D.Y.) and 21704064 (Q.Z.); National Science and Technology Major

Revision History  (Full details and data files)

  • Version 1.0: 2022-02-23
    Type: Initial release
  • Version 1.1: 2022-03-16
    Changes: Database references