9M0J | pdb_00009m0j

Cryo-EM structure of Bombesin receptor type-3 bound to oridonin

• PDB DOI: https://doi.org/10.2210/pdb9M0J/pdb
• EM Map EMD-63545: EMDB EMDataResource

• Classification: SIGNALING PROTEIN/IMMUNE SYSTEM
• Organism(s): Homo sapiens, synthetic construct
• Expression System: Trichoplusia ni, Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-02-24 Released: 2026-03-04 
• Deposition Author(s): Li, C., Xu, Y., Yin, W., Xu, H.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.90 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of Bombesin receptor type-3 bound to oridonin

Li, C., Xu, Y., Yin, W., Xu, H.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 146.07 kDa 
• Atom Count: 8,114 
• Modeled Residue Count: 1,028 
• Deposited Residue Count: 1,303 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(q) subunit alpha-1	A	361	Homo sapiens	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	344	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873 GTEx:  ENSG00000078369

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	C [auth G]	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768 GTEx:  ENSG00000186469

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Nanobody-35	D [auth N]	128	synthetic construct	Mutation(s): 0

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Bombesin receptor subtype-3	E [auth R]	399	Homo sapiens	Mutation(s): 0  Gene Names: BRS3
UniProt & NIH Common Fund Data Resources
Find proteins for P32247 (Homo sapiens) Explore P32247  Go to UniProtKB:  P32247
PHAROS:  P32247 GTEx:  ENSG00000102239

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ODN (Subject of Investigation/LOI)	F [auth R]	(1beta,6beta,7beta,8alpha,9beta,10alpha,13alpha,14R,16beta)-1,6,7,14-tetrahydroxy-7,20-epoxykauran-15-one C20 H30 O6 RWELMBQGCLVKOE-ZJOCIWLNSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.90 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-03-04 
Deposition Author(s): Li, C., Xu, Y., Yin, W., Xu, H.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	82121005

Revision History  

• Version 1.0: 2026-03-04
  Type: Initial release