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- PDB-6jmq: LAT1-CD98hc complex bound to MEM-108 Fab -

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Basic information

Entry
Database: PDB / ID: 6jmq
TitleLAT1-CD98hc complex bound to MEM-108 Fab
Components
  • (Antibody) x 2
  • 4F2 cell-surface antigen heavy chain
  • Large neutral amino acids transporter small subunit 1
KeywordsMEMBRANE PROTEIN/IMMUNE SYSTEM / Transporter / Glycoprotein / Complex / MEMBRANE PROTEIN / MEMBRANE PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / L-tryptophan transmembrane transporter activity / cellular response to L-arginine / apical pole of neuron / tyrosine transport / L-histidine transport / amino acid transport complex / L-leucine import across plasma membrane / L-alanine transmembrane transporter activity ...L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / L-tryptophan transmembrane transporter activity / cellular response to L-arginine / apical pole of neuron / tyrosine transport / L-histidine transport / amino acid transport complex / L-leucine import across plasma membrane / L-alanine transmembrane transporter activity / L-alanine import across plasma membrane / Defective SLC7A7 causes lysinuric protein intolerance (LPI) / aromatic amino acid transmembrane transporter activity / phenylalanine transport / methionine transport / L-leucine transmembrane transporter activity / amino acid transmembrane transport / thyroid hormone transmembrane transporter activity / isoleucine transport / valine transport / alanine transport / proline transport / L-amino acid transmembrane transporter activity / L-leucine transport / thyroid hormone transport / negative regulation of vascular associated smooth muscle cell apoptotic process / neutral amino acid transport / amino acid import across plasma membrane / positive regulation of cytokine production involved in immune response / neutral L-amino acid transmembrane transporter activity / external side of apical plasma membrane / Tryptophan catabolism / Amino acid transport across the plasma membrane / amino acid transmembrane transporter activity / exogenous protein binding / antiporter activity / anchoring junction / Basigin interactions / xenobiotic transport / microvillus membrane / response to muscle activity / positive regulation of interleukin-4 production / response to exogenous dsRNA / amino acid transport / positive regulation of interleukin-17 production / tryptophan transport / positive regulation of glial cell proliferation / response to hyperoxia / transport across blood-brain barrier / cellular response to glucose starvation / liver regeneration / negative regulation of autophagy / basal plasma membrane / peptide antigen binding / positive regulation of type II interferon production / calcium ion transport / melanosome / double-stranded RNA binding / cellular response to lipopolysaccharide / virus receptor activity / basolateral plasma membrane / carbohydrate metabolic process / apical plasma membrane / cadherin binding / protein heterodimerization activity / negative regulation of gene expression / lysosomal membrane / intracellular membrane-bounded organelle / synapse / symbiont entry into host cell / cell surface / protein homodimerization activity / RNA binding / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol
Similarity search - Function
L-type amino acid transporter / Solute carrier family 3 member 2, N-terminal domain / 4F2 cell-surface antigen heavy chain / Solute carrier family 3 member 2 N-terminus / : / Amino acid/polyamine transporter I / Amino acid permease / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain ...L-type amino acid transporter / Solute carrier family 3 member 2, N-terminal domain / 4F2 cell-surface antigen heavy chain / Solute carrier family 3 member 2 N-terminus / : / Amino acid/polyamine transporter I / Amino acid permease / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Glycosyl hydrolase, all-beta / Glycoside hydrolase superfamily / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
CHOLESTEROL / Amino acid transporter heavy chain SLC3A2 / Large neutral amino acids transporter small subunit 1
Similarity search - Component
Biological speciesHomo sapiens (human)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.31 Å
AuthorsLee, Y. / Nishizawa, T. / Kusakizako, T. / Oda, K. / Ishitani, R. / Nakane, T. / Nureki, O.
Funding support Japan, 2items
OrganizationGrant numberCountry
Japan Society for the Promotion of ScienceJP16J07405 Japan
Japan Agency for Medical Research and Development (AMED)JP18am0101115 Japan
CitationJournal: Nat Struct Mol Biol / Year: 2019
Title: Cryo-EM structure of the human L-type amino acid transporter 1 in complex with glycoprotein CD98hc.
Authors: Yongchan Lee / Pattama Wiriyasermkul / Chunhuan Jin / Lili Quan / Ryuichi Ohgaki / Suguru Okuda / Tsukasa Kusakizako / Tomohiro Nishizawa / Kazumasa Oda / Ryuichiro Ishitani / Takeshi ...Authors: Yongchan Lee / Pattama Wiriyasermkul / Chunhuan Jin / Lili Quan / Ryuichi Ohgaki / Suguru Okuda / Tsukasa Kusakizako / Tomohiro Nishizawa / Kazumasa Oda / Ryuichiro Ishitani / Takeshi Yokoyama / Takanori Nakane / Mikako Shirouzu / Hitoshi Endou / Shushi Nagamori / Yoshikatsu Kanai / Osamu Nureki /
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 ...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.
History
DepositionMar 13, 2019Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 19, 2019Provider: repository / Type: Initial release
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Revision 1.1Nov 6, 2019Group: Data collection / Other / Category: atom_sites / cell
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / em_entity_assembly / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _em_entity_assembly.entity_id_list / _pdbx_entity_nonpoly.entity_id / _pdbx_entity_nonpoly.name / _pdbx_struct_assembly_gen.asym_id_list / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Oct 30, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 2.2Jun 25, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
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Structure visualization

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Assembly

Deposited unit
A: Large neutral amino acids transporter small subunit 1
B: 4F2 cell-surface antigen heavy chain
C: Antibody
D: Antibody
hetero molecules


Theoretical massNumber of molelcules
Total (without water)172,94013
Polymers169,9184
Non-polymers3,0219
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein Large neutral amino acids transporter small subunit 1 / 4F2 light chain / 4F2LC / CD98 light chain / Integral membrane protein E16 / L-type amino acid ...4F2 light chain / 4F2LC / CD98 light chain / Integral membrane protein E16 / L-type amino acid transporter 1 / hLAT1 / Solute carrier family 7 member 5 / y+ system cationic amino acid transporter


Mass: 56043.746 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC7A5, CD98LC, LAT1, MPE16 / Cell line (production host): HEK293S GnTI- / Production host: Homo sapiens (human) / References: UniProt: Q01650
#2: Protein 4F2 cell-surface antigen heavy chain / Glycoprotein / 4F2hc / 4F2 heavy chain antigen / Lymphocyte activation antigen 4F2 large subunit / ...Glycoprotein / 4F2hc / 4F2 heavy chain antigen / Lymphocyte activation antigen 4F2 large subunit / Solute carrier family 3 member 2


Mass: 68069.625 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC3A2, MDU1 / Cell line (production host): HEK293S GnTI- / Production host: Homo sapiens (human) / References: UniProt: P08195

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Antibody , 2 types, 2 molecules CD

#3: Antibody Antibody


Mass: 22577.857 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Mus musculus (house mouse)
#4: Antibody Antibody


Mass: 23227.152 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Mus musculus (house mouse)

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Sugars , 2 types, 4 molecules

#5: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#7: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 1 types, 5 molecules

#6: Chemical
ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Formula: C27H46O

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Details

Has protein modificationY
Sequence detailsAuthors do not know the actual sequences of chains C, D since the protein WAS derived from an ...Authors do not know the actual sequences of chains C, D since the protein WAS derived from an commercial antibody whose sequence is NOT available.

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: LAT1-CD98hc complex bound to MEM-108 Fab / Type: COMPLEX / Entity ID: #1-#4 / Source: MULTIPLE SOURCES
Molecular weightValue: 175 kDa/nm / Experimental value: YES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 7.14 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k)

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Processing

Software
NameVersionClassification
phenix.real_space_refine1.14_3260refinement
PHENIX1.14_3260refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.31 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 250712 / Symmetry type: POINT
RefinementStereochemistry target values: CDL v1.2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.004710204
ELECTRON MICROSCOPYf_angle_d0.819913956
ELECTRON MICROSCOPYf_chiral_restr0.05131656
ELECTRON MICROSCOPYf_plane_restr0.00721725
ELECTRON MICROSCOPYf_dihedral_angle_d8.29316025

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