27XK | pdb_000027xk

A cryo-EM structure of GLP1-Y11-GLP1R-Gs complex

• PDB DOI: https://doi.org/10.2210/pdb27XK/pdb
• EM Map EMD-81535: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Bos taurus, Rattus norvegicus, Homo sapiens, Lama glama
• Expression System: Trichoplusia ni, Escherichia coli
• Mutation(s): Yes 


• Deposited: 2026-06-16 Released: 2026-07-01 
• Deposition Author(s): Zhao, L., Yuan, Q.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.64 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation

Currently 27XK does not have a validation slider image.

Literature

N-terminally modified GLP1R agonists drive G protein bias via extracellular loop 3 displacement

Zhao, L., Yuan, Q.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A1B1C1D1E1F1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 159.53 kDa 
• Atom Count: 9,440 
• Modeled Residue Count: 1,183 
• Deposited Residue Count: 1,414 
• Unique protein chains: 6

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(s) subunit alpha	A	361	Bos taurus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	B	371	Rattus norvegicus	Mutation(s): 0  Gene Names: Gnb1
UniProt
Find proteins for P54311 (Rattus norvegicus) Explore P54311  Go to UniProtKB:  P54311

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Glucagon-like peptide 1(7-36)	C	31	Homo sapiens	Mutation(s): 2
UniProt & NIH Common Fund Data Resources
Find proteins for P01275 (Homo sapiens) Explore P01275  Go to UniProtKB:  P01275
PHAROS:  P01275 GTEx:  ENSG00000115263

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	D [auth G]	71	Bos taurus	Mutation(s): 0  Gene Names: GNG2
UniProt
Find proteins for P63212 (Bos taurus) Explore P63212  Go to UniProtKB:  P63212

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Nanobody-35	E [auth N]	140	Lama glama	Mutation(s): 0

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
Glucagon-like peptide 1 receptor	F [auth R]	440	Homo sapiens	Mutation(s): 0  Gene Names: GLP1R
UniProt & NIH Common Fund Data Resources
Find proteins for P43220 (Homo sapiens) Explore P43220  Go to UniProtKB:  P43220
PHAROS:  P43220 GTEx:  ENSG00000112164

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.64 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC

Structure Validation

Currently 27XK does not have a validation slider image.

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-07-01 
Deposition Author(s): Zhao, L., Yuan, Q.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2026-07-01
  Type: Initial release