9JRK

outward-open hSLC19A1 + MTX

• PDB DOI: https://doi.org/10.2210/pdb9JRK/pdb
• EM Map EMD-61758: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli, Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  PDBTM


• Deposited: 2024-09-29 Released: 2025-02-26 
• Deposition Author(s): Zhang, Q.X., Liu, K.X., Gao, P.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.44 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Molecular basis of SLC19A1-mediated folate and cyclic dinucleotide transport

Zhang, Q.X., Zhang, X.Y., Liu, K.X., Gao, P.

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: 77.97 kDa 
• Atom Count: 3,139 
• Modelled Residue Count: 386 
• Deposited Residue Count: 690 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Soluble cytochrome b562,Reduced folate transporter,fusion protein	A	690	Escherichia coli, Homo sapiens	Mutation(s): 0  Gene Names: cybC, SLC19A1, FLOT1, RFC1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P41440 (Homo sapiens) Explore P41440  Go to UniProtKB:  P41440
PHAROS:  P41440 GTEx:  ENSG00000173638
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7  Go to UniProtKB:  P0ABE7
UniProt Groups	P0ABE7P41440

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MTX (Subject of Investigation/LOI)	B [auth A]	METHOTREXATE C20 H22 N8 O5 FBOZXECLQNJBKD-ZDUSSCGKSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.44 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-02-26 
Deposition Author(s): Zhang, Q.X., Liu, K.X., Gao, P.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2025-02-26
  Type: Initial release