9WG4 | pdb_00009wg4

Cryo-EM structure of pocket engineered OR52cs in its active state

• PDB DOI: https://doi.org/10.2210/pdb9WG4/pdb
• EM Map EMD-65947: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Lama glama, Homo sapiens
• Expression System: Escherichia coli, Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2025-08-22 Released: 2026-06-17 
• Deposition Author(s): Choi, C.W., Choi, H.-J.
• Funding Organization(s): Samsung Science and Technology Foundation, National Research Foundation (NRF, Korea)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.29 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

The structure of pocket engineered OR52cs in its active state

Choi, C.W., Choi, H.-J.

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: 127.14 kDa 
• Atom Count: 7,786 
• Modeled Residue Count: 1,022 
• Deposited Residue Count: 1,130 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nanobody 35	A [auth N]	130	Lama glama	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Pocket engineered human consensus OR52 (OR52cs)	B [auth R]	323	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
mini form Guanine nucleotide-binding protein G(s) subunit alpha	C [auth X]	248	Homo sapiens	Mutation(s): 0

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	D [auth Y]	358	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: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	E [auth Z]	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

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1MBN( Subject of Investigation/LOI)	F [auth R]	(3~{R})-3-methyl-3-oxidanyl-hexanoic acid C7 H14 O3 RGRNSTGIHROKJB-SSDOTTSWSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.29 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: 2026-06-17 
Deposition Author(s): Choi, C.W., Choi, H.-J.

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Funding Organization	Location	Grant Number
Samsung Science and Technology Foundation	Korea, Republic Of	--
National Research Foundation (NRF, Korea)	Korea, Republic Of	--

Revision History  

• Version 1.0: 2026-06-17
  Type: Initial release