9TIB | pdb_00009tib

Cryo-EM structure of the y LAT1/CD98hc heteromeric complex bound to L-glutamine

• PDB DOI: https://doi.org/10.2210/pdb9TIB/pdb
• EM Map EMD-55949: EMDB EMDataResource

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


• Deposited: 2025-12-05 Released: 2026-11-11 
• Deposition Author(s): Aparicio, D., Martinez, M., Llorca, O., Palacin, M.
• Funding Organization(s): Ministerio de Ciencia e Innovacion (MCIN)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: CELL 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: in silico

Literature

Membrane Protein Transporter

Aparicio, D., Palacin, M., Llorca, O., Martinez, M.

(2026) Nat Commun 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 124.08 kDa 
• Atom Count: 7,105 
• Modeled Residue Count: 912 
• Deposited Residue Count: 1,141 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Y+L amino acid transporter 1	A [auth B]	511	Homo sapiens	Mutation(s): 0  Gene Names: SLC7A7
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UM01 (Homo sapiens) Explore Q9UM01  Go to UniProtKB:  Q9UM01
PHAROS:  Q9UM01 GTEx:  ENSG00000155465

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
4F2 cell-surface antigen heavy chain	B [auth C]	630	Homo sapiens	Mutation(s): 0  Gene Names: SLC3A2, MDU1
UniProt & NIH Common Fund Data Resources
Find proteins for P08195 (Homo sapiens) Explore P08195  Go to UniProtKB:  P08195
GTEx:  ENSG00000168003

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: CELL 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC	v4.6.0

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-11-11 
Deposition Author(s): Aparicio, D., Martinez, M., Llorca, O., Palacin, M.

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Funding Organization	Location	Grant Number
Ministerio de Ciencia e Innovacion (MCIN)	Spain	PID2021-122802OB-I00

Revision History  

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