9UX2 | pdb_00009ux2

Cryo-EM structure of the human P2X2/3 heteromer receptor - class 2 (2:1)

PDB DOI: https://doi.org/10.2210/pdb9UX2/pdb
EM Map EMD-64570: EMDB EMDataResource

Classification: MEMBRANE PROTEIN
Organism(s): Homo sapiens
Expression System: Homo sapiens
Mutation(s): No

Deposited: 2025-05-13 Released: 2026-03-11
Deposition Author(s): Zhang, J., Cheng, X.Y.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.73 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

This is version 1.0 of the entry. See complete history.

Literature

Cryo-EM structure of the human P2X2/3 heteromer receptor - class 2 (2:1)

Zhang, J., Cheng, X.Y.

To be published.

Macromolecule Content

Total Structure Weight: 147.6 kDa
Atom Count: 7,640
Modeled Residue Count: 953
Deposited Residue Count: 1,306
Unique protein chains: 2

Macromolecules

Find similar proteins by:

| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
P2X purinoceptor 3	A	364	Homo sapiens	Mutation(s): 0 Gene Names: P2RX3
UniProt & NIH Common Fund Data Resources
Find proteins for P56373 (Homo sapiens) Explore P56373 Go to UniProtKB: P56373
PHAROS: P56373 GTEx: ENSG00000109991
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P56373
Glycosylation
Glycosylation Sites: 3	Glycosylation Focus chain A	Go to GlyGen: P56373-1
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

| 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
P2X purinoceptor 2	B, C	471	Homo sapiens	Mutation(s): 0 Gene Names: P2RX2, P2X2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UBL9 (Homo sapiens) Explore Q9UBL9 Go to UniProtKB: Q9UBL9
PHAROS: Q9UBL9 GTEx: ENSG00000187848
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q9UBL9
Glycosylation
Glycosylation Sites: 2	Glycosylation Focus chain B Focus chain C	Go to GlyGen: Q9UBL9-1
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ATP (Subject of Investigation/LOI) Query on ATP Download:Ideal Coordinates CCD File SDF format, chain K [auth C] SDF format, chain J [auth B] SDF format, chain G [auth A] MOL2 format, chain K [auth C] MOL2 format, chain J [auth B] MOL2 format, chain G [auth A] mmCIF format, chain K [auth C] mmCIF format, chain J [auth B] mmCIF format, chain G [auth A]	G [auth A], J [auth B], K [auth C]	ADENOSINE-5'-TRIPHOSPHATE C₁₀ H₁₆ N₅ O₁₃ P₃ ZKHQWZAMYRWXGA-KQYNXXCUSA-N		Interactions Focus chain G [auth A] Focus chain J [auth B] Focus chain K [auth C] Interactions & Density Focus chain G [auth A] Focus chain J [auth B] Focus chain K [auth C]
NAG (Subject of Investigation/LOI) Query on NAG Download:Ideal Coordinates CCD File SDF format, chain M [auth C] SDF format, chain L [auth C] SDF format, chain I [auth B] SDF format, chain H [auth B] SDF format, chain F [auth A] SDF format, chain E [auth A] SDF format, chain D [auth A] MOL2 format, chain M [auth C] MOL2 format, chain L [auth C] MOL2 format, chain I [auth B] MOL2 format, chain H [auth B] MOL2 format, chain F [auth A] MOL2 format, chain E [auth A] MOL2 format, chain D [auth A] mmCIF format, chain M [auth C] mmCIF format, chain L [auth C] mmCIF format, chain I [auth B] mmCIF format, chain H [auth B] mmCIF format, chain F [auth A] mmCIF format, chain E [auth A] mmCIF format, chain D [auth A]	D [auth A] E [auth A] F [auth A] H [auth B] I [auth B] D [auth A], E [auth A], F [auth A], H [auth B], I [auth B], L [auth C], M [auth C]	2-acetamido-2-deoxy-beta-D-glucopyranose C₈ H₁₅ N O₆ OVRNDRQMDRJTHS-FMDGEEDCSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain H [auth B] Focus chain I [auth B] Focus chain L [auth C] Focus chain M [auth C] Interactions & Density Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain H [auth B] Focus chain I [auth B] Focus chain L [auth C] Focus chain M [auth C]