8I4A

Cryo-EM structure of dipyridamole-bound ABCC4

• PDB DOI: https://doi.org/10.2210/pdb8I4A/pdb
• EM Map EMD-35167: EMDB EMDataResource

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTM


• Deposited: 2023-01-19 Released: 2023-05-24 
• Deposition Author(s): Chen, Y., Wang, L., Hou, W.T., Zhou, C.Z., Chen, Y., Li, Q.
• Funding Organization(s): Ministry of Science and Technology (MoST, China), Chinese Academy of Sciences

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure ofABCC4

Chen, Y., Wang, L., Hou, W.T., Zhou, C.Z., Chen, Y., Li, Q.

(2023) Nat Cardiovasc Res 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 150.2 kDa 
• Atom Count: 9,763 
• Modelled Residue Count: 1,218 
• Deposited Residue Count: 1,325 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ATP-binding cassette sub-family C member 4	A	1,325	Homo sapiens	Mutation(s): 0  Gene Names: ABCC4, MOATB, MRP4 EC: 7.6.2 (PDB Primary Data), 7.6.2.2 (PDB Primary Data), 7.6.2.3 (PDB Primary Data) Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for O15439 (Homo sapiens) Explore O15439  Go to UniProtKB:  O15439
PHAROS:  O15439 GTEx:  ENSG00000125257

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
H9F (Subject of Investigation/LOI)	B [auth A]	2-[[2-[bis(2-hydroxyethyl)amino]-4,8-di(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-6-yl]-(2-hydroxyethyl)amino]ethanol C24 H40 N8 O4 IZEKFCXSFNUWAM-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
H9F	BindingDB:  8I4A	IC50: min: 2000, max: 8300 (nM) from 2 assay(s)

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.18.2_3874:

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-05-24 
Deposition Author(s): Chen, Y., Wang, L., Hou, W.T., Zhou, C.Z., Chen, Y., Li, Q.

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Funding Organization	Location	Grant Number
Ministry of Science and Technology (MoST, China)	China	2019YFA0508500
Chinese Academy of Sciences	China	XDB37020202

Revision History  

• Version 1.0: 2023-05-24
  Type: Initial release
  
• Version 1.1: 2024-07-03
  Changes: Data collection