9ON6 | pdb_00009on6

The pre-open state 2 structure of human P2X2 receptor channel in lipid nanodiscs with free ATP and sodium

PDB DOI: https://doi.org/10.2210/pdb9ON6/pdb
EM Map EMD-70629: EMDB EMDataResource

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

Deposited: 2025-05-14 Released: 2026-03-18
Deposition Author(s): Dhingra, S., Swartz, K.J.
Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.60 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 9ON6

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

Literature

The pre-open state 2 structure of human P2X2 receptor channel in lipid nanodiscs with free ATP and sodium

Dhingra, S., Swartz, K.J.

To be published.

Macromolecule Content

Total Structure Weight: 158.96 kDa
Atom Count: 7,791
Modeled Residue Count: 969
Deposited Residue Count: 1,413
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
P2X purinoceptor 2	A, B [auth C], C [auth B]	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: 3	Glycosylation Focus chain A Focus chain B [auth C] Focus chain C [auth B]	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 G [auth A] SDF format, chain O [auth B] SDF format, chain K [auth C] MOL2 format, chain G [auth A] MOL2 format, chain O [auth B] MOL2 format, chain K [auth C] mmCIF format, chain G [auth A] mmCIF format, chain O [auth B] mmCIF format, chain K [auth C]	G [auth A], K [auth C], O [auth B]	ADENOSINE-5'-TRIPHOSPHATE C₁₀ H₁₆ N₅ O₁₃ P₃ ZKHQWZAMYRWXGA-KQYNXXCUSA-N		Interactions Focus chain G [auth A] Focus chain K [auth C] Focus chain O [auth B] Interactions & Density Focus chain G [auth A] Focus chain K [auth C] Focus chain O [auth B]
NAG (Subject of Investigation/LOI) Query on NAG Download:Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain H [auth C] SDF format, chain I [auth C] SDF format, chain J [auth C] SDF format, chain L [auth B] SDF format, chain M [auth B] SDF format, chain N [auth B] SDF format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain H [auth C] MOL2 format, chain I [auth C] MOL2 format, chain J [auth C] MOL2 format, chain L [auth B] MOL2 format, chain M [auth B] MOL2 format, chain N [auth B] MOL2 format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain H [auth C] mmCIF format, chain I [auth C] mmCIF format, chain J [auth C] mmCIF format, chain L [auth B] mmCIF format, chain M [auth B] mmCIF format, chain N [auth B] mmCIF format, chain D [auth A]	D [auth A] E [auth A] F [auth A] H [auth C] I [auth C] D [auth A], E [auth A], F [auth A], H [auth C], I [auth C], J [auth C], L [auth B], M [auth B], N [auth B]	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 C] Focus chain I [auth C] Focus chain J [auth C] Focus chain L [auth B] Focus chain M [auth B] Focus chain N [auth B] Interactions & Density Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain H [auth C] Focus chain I [auth C] Focus chain J [auth C] Focus chain L [auth B] Focus chain M [auth B] Focus chain N [auth B]

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.60 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1_4487:
RECONSTRUCTION	cryoSPARC

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-03-18

Deposition Author(s):

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)	United States	NS003018

Revision History (Full details and data files)

Version 1.0: 2026-03-18
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.