9JBU | pdb_00009jbu

Structure of LAT4 in complex with digitonin

• PDB DOI: https://doi.org/10.2210/pdb9JBU/pdb
• EM Map EMD-61326: EMDB EMDataResource

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


• Deposited: 2024-08-27 Released: 2026-03-11 
• Deposition Author(s): Yin, Y.X., Ding, D., Lu, Y.S., Chen, H.Y.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural insights into the amino acid transport and pharmacological blockade of human LAT4

Yin, Y.X., Ding, D., Lu, Y.S., Chen, H.Y.

To be published.

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: 64.03 kDa 
• Atom Count: 3,219 
• Modeled Residue Count: 415 
• Deposited Residue Count: 569 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Large neutral amino acids transporter small subunit 4	A	569	Homo sapiens	Mutation(s): 0  Gene Names: SLC43A2, LAT4, PP7664
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N370 (Homo sapiens) Explore Q8N370  Go to UniProtKB:  Q8N370
PHAROS:  Q8N370 GTEx:  ENSG00000167703

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
AJP (Subject of Investigation/LOI)	B [auth A]	Digitonin C56 H92 O29 UVYVLBIGDKGWPX-KUAJCENISA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-03-11 
Deposition Author(s): Yin, Y.X., Ding, D., Lu, Y.S., Chen, H.Y.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	82030081
National Natural Science Foundation of China (NSFC)	China	81874235
National Natural Science Foundation of China (NSFC)	China	82173386

Revision History  

• Version 1.0: 2026-03-11
  Type: Initial release