9IPM | pdb_00009ipm

Hemichannel sub-structure of Cx36/GJD2 gap junction intercellular channel (FN conformation) in soybean polar lipid nanodiscs, treated with a 20-fold molar excess of carbenoxolone

PDB DOI: https://doi.org/10.2210/pdb9IPM/pdb
EM Map EMD-60777: EMDB EMDataResource

Classification: MEMBRANE PROTEIN
Organism(s): Homo sapiens, Escherichia coli
Expression System: Homo sapiens
Mutation(s): Yes

Deposited: 2024-07-11 Released: 2026-01-21
Deposition Author(s): Jang, H.S.
Funding Organization(s): National Research Foundation (NRF, Korea), Other private

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 3.56 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 9IPM

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

Literature

Structural insights into the closing mechanism of gap junction intercellular channels by carbenoxolone

Lee, C.W., Jang, H.S., Woo, J.S.

To be published.

Macromolecule Content

Total Structure Weight: 255.54 kDa
Atom Count: 8,760
Modeled Residue Count: 1,026
Deposited Residue Count: 2,154
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Gap junction delta-2 protein,Soluble cytochrome b562	A [auth E] B [auth A] C [auth B] D [auth F] E [auth C] A [auth E], B [auth A], C [auth B], D [auth F], E [auth C], F [auth D]	359	Homo sapiens, Escherichia coli	Mutation(s): 3 Gene Names: GJD2, GJA9, cybC
UniProt & NIH Common Fund Data Resources
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7 Go to UniProtKB: P0ABE7
Find proteins for Q9UKL4 (Homo sapiens) Explore Q9UKL4 Go to UniProtKB: Q9UKL4
PHAROS: Q9UKL4 GTEx: ENSG00000159248
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Groups	P0ABE7 Q9UKL4
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
MC3 Query on MC3 Download:Ideal Coordinates CCD File SDF format, chain G [auth E] SDF format, chain I [auth E] SDF format, chain J [auth A] SDF format, chain L [auth A] SDF format, chain M [auth B] SDF format, chain O [auth B] SDF format, chain P [auth F] SDF format, chain R [auth F] SDF format, chain S [auth C] SDF format, chain U [auth C] SDF format, chain V [auth D] SDF format, chain X [auth D] MOL2 format, chain G [auth E] MOL2 format, chain I [auth E] MOL2 format, chain J [auth A] MOL2 format, chain L [auth A] MOL2 format, chain M [auth B] MOL2 format, chain O [auth B] MOL2 format, chain P [auth F] MOL2 format, chain R [auth F] MOL2 format, chain S [auth C] MOL2 format, chain U [auth C] MOL2 format, chain V [auth D] MOL2 format, chain X [auth D] mmCIF format, chain G [auth E] mmCIF format, chain I [auth E] mmCIF format, chain J [auth A] mmCIF format, chain L [auth A] mmCIF format, chain M [auth B] mmCIF format, chain O [auth B] mmCIF format, chain P [auth F] mmCIF format, chain R [auth F] mmCIF format, chain S [auth C] mmCIF format, chain U [auth C] mmCIF format, chain V [auth D] mmCIF format, chain X [auth D]	G [auth E] I [auth E] J [auth A] L [auth A] M [auth B] G [auth E], I [auth E], J [auth A], L [auth A], M [auth B], O [auth B], P [auth F], R [auth F], S [auth C], U [auth C], V [auth D], X [auth D]	1,2-DIMYRISTOYL-RAC-GLYCERO-3-PHOSPHOCHOLINE C₃₆ H₇₂ N O₈ P CITHEXJVPOWHKC-UUWRZZSWSA-N		Interactions Focus chain G [auth E] Focus chain I [auth E] Focus chain J [auth A] Focus chain L [auth A] Focus chain M [auth B] Focus chain O [auth B] Focus chain P [auth F] Focus chain R [auth F] Focus chain S [auth C] Focus chain U [auth C] Focus chain V [auth D] Focus chain X [auth D] Interactions & Density Focus chain G [auth E] Focus chain I [auth E] Focus chain J [auth A] Focus chain L [auth A] Focus chain M [auth B] Focus chain O [auth B] Focus chain P [auth F] Focus chain R [auth F] Focus chain S [auth C] Focus chain U [auth C] Focus chain V [auth D] Focus chain X [auth D]
C14 Query on C14 Download:Ideal Coordinates CCD File SDF format, chain H [auth E] SDF format, chain K [auth A] SDF format, chain N [auth B] SDF format, chain Q [auth F] SDF format, chain T [auth C] SDF format, chain W [auth D] MOL2 format, chain H [auth E] MOL2 format, chain K [auth A] MOL2 format, chain N [auth B] MOL2 format, chain Q [auth F] MOL2 format, chain T [auth C] MOL2 format, chain W [auth D] mmCIF format, chain H [auth E] mmCIF format, chain K [auth A] mmCIF format, chain N [auth B] mmCIF format, chain Q [auth F] mmCIF format, chain T [auth C] mmCIF format, chain W [auth D]	H [auth E] K [auth A] N [auth B] Q [auth F] T [auth C] H [auth E], K [auth A], N [auth B], Q [auth F], T [auth C], W [auth D]	TETRADECANE C₁₄ H₃₀ BGHCVCJVXZWKCC-UHFFFAOYSA-N		Interactions Focus chain H [auth E] Focus chain K [auth A] Focus chain N [auth B] Focus chain Q [auth F] Focus chain T [auth C] Focus chain W [auth D] Interactions & Density Focus chain H [auth E] Focus chain K [auth A] Focus chain N [auth B] Focus chain Q [auth F] Focus chain T [auth C] Focus chain W [auth D]

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 3.56 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC
MODEL REFINEMENT	PHENIX

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-01-21

Deposition Author(s):

Funding Organization	Location	Grant Number
National Research Foundation (NRF, Korea)	Korea, Republic Of	RS-2023-00217798
Other private	Korea, Republic Of	SUHF-18010097
Other private	Korea, Republic Of	--

Revision History (Full details and data files)

Version 1.0: 2026-01-21
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.