9MAG | pdb_00009mag

CryoEM structure of a transmembrane protein

• PDB DOI: https://doi.org/10.2210/pdb9MAG/pdb
• EM Map EMD-63753: EMDB EMDataResource

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


• Deposited: 2025-03-14 Released: 2026-03-18 
• Deposition Author(s): Ning, Y., Ge, J., Yu, J.
• Funding Organization(s): Other government

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.37 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

CryoEM structure of a transmembrane protein

Ning, Y., Ge, J., Yu, J.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Cyclic - C4  (Explore in 3D)
Pseudo Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 156.9 kDa 
• Atom Count: 10,213 
• Modeled Residue Count: 1,266 
• Deposited Residue Count: 1,364 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Inward rectifier potassium channel 16	A, C	337	Homo sapiens	Mutation(s): 0  Gene Names: KCNJ16
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NPI9 (Homo sapiens) Explore Q9NPI9  Go to UniProtKB:  Q9NPI9
PHAROS:  Q9NPI9 GTEx:  ENSG00000153822

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ATP-sensitive inward rectifier potassium channel 10	B [auth D], D [auth B]	345	Homo sapiens	Mutation(s): 0  Gene Names: KCNJ10
UniProt & NIH Common Fund Data Resources
Find proteins for P78508 (Homo sapiens) Explore P78508  Go to UniProtKB:  P78508
PHAROS:  P78508 GTEx:  ENSG00000177807

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1ENN (Subject of Investigation/LOI)	H [auth D], I [auth B]	2-(2-bromanyl-4-propan-2-yl-phenoxy)-~{N}-(2,2,6,6-tetramethylpiperidin-4-yl)ethanamide C20 H31 Br N2 O2 OTTDLWFVHQYRDA-UHFFFAOYSA-N
K (Subject of Investigation/LOI)	E [auth A], F [auth A], G [auth A]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.37 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1_4487

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-03-18 
Deposition Author(s): Ning, Y., Ge, J., Yu, J.

---

Funding Organization	Location	Grant Number
Other government		LG-QS-202203-05; 22PJ1410300; 32471016

Revision History  

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