6JMR

CD98hc extracellular domain bound to HBJ127 Fab and MEM-108 Fab

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report



Literature

Cryo-EM structure of the human L-type amino acid transporter 1 in complex with glycoprotein CD98hc.

Lee, Y., Wiriyasermkul, P., Jin, C., Quan, L., Ohgaki, R., Okuda, S., Kusakizako, T., Nishizawa, T., Oda, K., Ishitani, R., Yokoyama, T., Nakane, T., Shirouzu, M., Endou, H., Nagamori, S., Kanai, Y., Nureki, O.

(2019) Nat Struct Mol Biol 26: 510-517

  • DOI: 10.1038/s41594-019-0237-7
  • Primary Citation of Related Structures:  
    6JMR, 6JMQ

  • PubMed Abstract: 

    • The L-type amino acid transporter 1 (LAT1 or SLC7A5) transports large neutral amino acids across the membrane and is crucial for brain drug delivery and tumor growth. LAT1 forms a disulfide-linked heterodimer with CD98 heavy chain (CD98hc, 4F2hc or S ...

    The L-type amino acid transporter 1 (LAT1 or SLC7A5) transports large neutral amino acids across the membrane and is crucial for brain drug delivery and tumor growth. LAT1 forms a disulfide-linked heterodimer with CD98 heavy chain (CD98hc, 4F2hc or SLC3A2), but the mechanism of assembly and amino acid transport are poorly understood. Here we report the cryo-EM structure of the human LAT1-CD98hc heterodimer at 3.3-Å resolution. LAT1 features a canonical Leu T-fold and exhibits an unusual loop structure on transmembrane helix 6, creating an extended cavity that might accommodate bulky amino acids and drugs. CD98hc engages with LAT1 through the extracellular, transmembrane and putative cholesterol-mediated interactions. We also show that two anti-CD98 antibodies recognize distinct, multiple epitopes on CD98hc but not its glycans, explaining their robust reactivities. These results reveal the principles of glycoprotein-solute carrier assembly and provide templates for improving preclinical drugs and antibodies targeting LAT1 or CD98hc.

    Organizational Affiliation: 

    Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan. nureki@bs.s.u-tokyo.ac.jp.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AntibodyE220Mus musculusMutation(s): 0 
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
AntibodyF218Mus musculusMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
4F2 cell-surface antigen heavy chainB631Homo sapiensMutation(s): 0 
Gene Names: SLC3A2, MDU1
Membrane protein
Mpstruc		Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group: 
Solute Carrier (SLC) Transporter Superfamily		Protein: 
SLC7A5 L-type amino acid transporter LAT1-CD98hc in complex with MEM-108 Fab
Find proteins for P08195 (Homo sapiens)
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PHAROS  P08195
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
AntibodyC219Mus musculusMutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
AntibodyD219Mus musculusMutation(s): 0 
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Oligosaccharides

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Entity ID: 6
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
A
2 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG
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B
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Japan Society for the Promotion of ScienceJapanJP16J07405
Japan Agency for Medical Research and Development (AMED)JapanJP18am0101082
Japan Agency for Medical Research and Development (AMED)JapanJP18am0101115

Revision History 

  • Version 1.0: 2019-06-19
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary