9E4H | pdb_00009e4h

Human ASIC1a at pH 5.7 with rotated, domain-swapped transmembrane domain

PDB DOI: https://doi.org/10.2210/pdb9E4H/pdb
EM Map EMD-47510: EMDB EMDataResource

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

Deposited: 2024-10-24 Released: 2026-01-21
Deposition Author(s): Hartfield, K.A., Cahill, J., Baconguis, I.
Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.61 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

Conformational plasticity of human acid-sensing ion channel 1a

Cahill, J., Hartfield, K.A., Heusser, S.A., Ritter, N., Poulsen, M.H., Yoshioka, C., Pless, S.A., Baconguis, I.

To be published.

Macromolecule Content

Total Structure Weight: 180.76 kDa
Atom Count: 10,287
Modeled Residue Count: 1,281
Deposited Residue Count: 1,593
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Acid-sensing ion channel 1	A, B, C	531	Homo sapiens	Mutation(s): 0 Gene Names: ASIC1, ACCN2, BNAC2
UniProt & NIH Common Fund Data Resources
Find proteins for P78348 (Homo sapiens) Explore P78348 Go to UniProtKB: P78348
PHAROS: P78348 GTEx: ENSG00000110881
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P78348
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.61 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Released Date: 2026-01-21

Deposition Author(s):

Hartfield, K.A.

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01GM138862

Revision History (Full details and data files)

Version 1.0: 2026-01-21
Type: Initial release

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.