9X5O | pdb_00009x5o

Cryo-EM structure of SLC4A10 bound DIDS

• PDB DOI: https://doi.org/10.2210/pdb9X5O/pdb
• EM Map EMD-66592: EMDB EMDataResource

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


• Deposited: 2025-10-13 Released: 2026-10-28 
• Deposition Author(s): Yang, H., Sun, P.
• Funding Organization(s): National Natural Science Foundation of China (NSFC), Ministry of Science and Technology (MoST, China)

---

Experimental Data Snapshot

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

Literature

Substrates binding and inhibition of the human sodium dependent choline/biocarbonate exchanger, NCBE

Sun, P.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 254.11 kDa 
• Atom Count: 9,188 
• Modeled Residue Count: 1,142 
• Deposited Residue Count: 2,236 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sodium-driven chloride bicarbonate exchanger	A, B	1,118	Homo sapiens	Mutation(s): 0  Gene Names: SLC4A10, NBCN2, NCBE
UniProt & NIH Common Fund Data Resources
Find proteins for Q6U841 (Homo sapiens) Explore Q6U841  Go to UniProtKB:  Q6U841
PHAROS:  Q6U841 GTEx:  ENSG00000144290

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
Y01 (Subject of Investigation/LOI)	D [auth A], F [auth B]	CHOLESTEROL HEMISUCCINATE C31 H50 O4 WLNARFZDISHUGS-MIXBDBMTSA-N
4KU (Subject of Investigation/LOI)	C [auth A], E [auth B]	2,2'-ethane-1,2-diylbis{5-[(sulfanylmethyl)amino]benzenesulfonic acid} C16 H20 N2 O6 S4 LJEHNCSYWIAXRX-UHFFFAOYSA-N

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	1.20.1_4487
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-10-28 
Deposition Author(s): Yang, H., Sun, P.

---

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	32171216
Ministry of Science and Technology (MoST, China)	China	STI2030-Major Projects 2022ZD0212600

Revision History  

• Version 1.0: 2026-10-28
  Type: Initial release