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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-30837 | ||||||||||||
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Title | cryo EM map of the LAT1-4F2hc bound with JX-078 | ||||||||||||
![]() | cryo EM map of the LAT1-4F2hc bound with JX-078 | ||||||||||||
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Function / homology | ![]() L-tryptophan transmembrane transporter activity / alanine transport / L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / cellular response to L-arginine / thyroid hormone transmembrane transporter activity / neutral L-amino acid secondary active transmembrane transporter activity / amino acid import across plasma membrane / Defective SLC7A7 causes lysinuric protein intolerance (LPI) / methionine transport ...L-tryptophan transmembrane transporter activity / alanine transport / L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / cellular response to L-arginine / thyroid hormone transmembrane transporter activity / neutral L-amino acid secondary active transmembrane transporter activity / amino acid import across plasma membrane / Defective SLC7A7 causes lysinuric protein intolerance (LPI) / methionine transport / tyrosine transport / L-histidine transport / apical pole of neuron / aromatic amino acid transmembrane transporter activity / amino acid transport complex / L-amino acid transmembrane transporter activity / : / L-leucine import across plasma membrane / L-alanine transmembrane transporter activity / isoleucine transport / L-alanine import across plasma membrane / phenylalanine transport / valine transport / L-leucine transmembrane transporter activity / amino acid transmembrane transport / calcium:sodium antiporter activity / L-leucine transport / thyroid hormone transport / proline transport / positive regulation of cytokine production involved in immune response / neutral amino acid transport / negative regulation of vascular associated smooth muscle cell apoptotic process / amino acid transmembrane transporter activity / Amino acid transport across the plasma membrane / external side of apical plasma membrane / neutral L-amino acid transmembrane transporter activity / Tryptophan catabolism / exogenous protein binding / xenobiotic transport / antiporter activity / response to muscle activity / anchoring junction / Basigin interactions / microvillus membrane / amino acid transport / positive regulation of interleukin-4 production / response to exogenous dsRNA / positive regulation of interleukin-17 production / tryptophan transport / transport across blood-brain barrier / response to hyperoxia / cellular response to glucose starvation / positive regulation of glial cell proliferation / negative regulation of autophagy / basal plasma membrane / liver regeneration / peptide antigen binding / calcium ion transport / double-stranded RNA binding / positive regulation of type II interferon production / melanosome / virus receptor activity / basolateral plasma membrane / cellular response to lipopolysaccharide / carbohydrate metabolic process / symbiont entry into host cell / cadherin binding / apical plasma membrane / protein heterodimerization activity / lysosomal membrane / negative regulation of gene expression / intracellular membrane-bounded organelle / synapse / cell surface / protein homodimerization activity / RNA binding / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.9 Å | ||||||||||||
![]() | Yan RH / Li YN / Zhang YY / Zhong XY / Zhou Q | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Mechanism of substrate transport and inhibition of the human LAT1-4F2hc amino acid transporter. Authors: Renhong Yan / Yaning Li / Jennifer Müller / Yuanyuan Zhang / Simon Singer / Lu Xia / Xinyue Zhong / Jürg Gertsch / Karl-Heinz Altmann / Qiang Zhou / ![]() ![]() Abstract: LAT1 (SLC7A5) is one of the representative light chain proteins of heteromeric amino acid transporters, forming a heterodimer with its heavy chain partner 4F2hc (SLC3A2). LAT1 is overexpressed in ...LAT1 (SLC7A5) is one of the representative light chain proteins of heteromeric amino acid transporters, forming a heterodimer with its heavy chain partner 4F2hc (SLC3A2). LAT1 is overexpressed in many types of tumors and mediates the transfer of drugs and hormones across the blood-brain barrier. Thus, LAT1 is considered as a drug target for cancer treatment and may be exploited for drug delivery into the brain. Here, we synthesized three potent inhibitors of human LAT1, which inhibit transport of leucine with IC values between 100 and 250 nM, and solved the cryo-EM structures of the corresponding LAT1-4F2hc complexes with these inhibitors bound at resolution of up to 2.7 or 2.8 Å. The protein assumes an outward-facing occluded conformation, with the inhibitors bound in the classical substrate binding pocket, but with their tails wedged between the substrate binding site and TM10 of LAT1. We also solved the complex structure of LAT1-4F2hc with 3,5-diiodo-L-tyrosine (Diiodo-Tyr) at 3.4 Å overall resolution, which revealed a different inhibition mechanism and might represent an intermediate conformation between the outward-facing occluded state mentioned above and the outward-open state. To our knowledge, this is the first time that the outward-facing conformation is revealed for the HAT family. Our results unveil more important insights into the working mechanisms of HATs and provide a structural basis for future drug design. | ||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 59.1 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 13.7 KB 13.7 KB | Display Display | ![]() |
Images | ![]() | 44.4 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 443.4 KB | Display | ![]() |
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Full document | ![]() | 443 KB | Display | |
Data in XML | ![]() | 6.1 KB | Display | |
Data in CIF | ![]() | 6.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7dslMC ![]() 7dskC ![]() 7dsnC ![]() 7dsqC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | cryo EM map of the LAT1-4F2hc bound with JX-078 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.087 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : LAT1-4F2hc bound with JX-078
Entire | Name: LAT1-4F2hc bound with JX-078 |
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Components |
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-Supramolecule #1: LAT1-4F2hc bound with JX-078
Supramolecule | Name: LAT1-4F2hc bound with JX-078 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2 |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() |
-Macromolecule #1: 4F2 cell-surface antigen heavy chain
Macromolecule | Name: 4F2 cell-surface antigen heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 70.160828 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MAHHHHHHHH HHSGRELQPP EASIAVVSIP RQLPGSHSEA GVQGLSAGDD SETGSDCVTQ AGLQLLASSD PPALASKNAE VTVETGFHH VSQADIEFLT SIDPTASASG SAGITGTMSQ DTEVDMKEVE LNELEPEKQP MNAASGAAMS LAGAEKNGLV K IKVAEDEA ...String: MAHHHHHHHH HHSGRELQPP EASIAVVSIP RQLPGSHSEA GVQGLSAGDD SETGSDCVTQ AGLQLLASSD PPALASKNAE VTVETGFHH VSQADIEFLT SIDPTASASG SAGITGTMSQ DTEVDMKEVE LNELEPEKQP MNAASGAAMS LAGAEKNGLV K IKVAEDEA EAAAAAKFTG LSKEELLKVA GSPGWVRTRW ALLLLFWLGW LGMLAGAVVI IVRAPRCREL PAQKWWHTGA LY RIGDLQA FQGHGAGNLA GLKGRLDYLS SLKVKGLVLG PIHKNQKDDV AQTDLLQIDP NFGSKEDFDS LLQSAKKKSI RVI LDLTPN YRGENSWFST QVDTVATKVK DALEFWLQAG VDGFQVRDIE NLKDASSFLA EWQNITKGFS EDRLLIAGTN SSDL QQILS LLESNKDLLL TSSYLSDSGS TGEHTKSLVT QYLNATGNRW CSWSLSQARL LTSFLPAQLL RLYQLMLFTL PGTPV FSYG DEIGLDAAAL PGQPMEAPVM LWDESSFPDI PGAVSANMTV KGQSEDPGSL LSLFRRLSDQ RSKERSLLHG DFHAFS AGP GLFSYIRHWD QNERFLVVLN FGDVGLSAGL QASDLPASAS LPAKADLLLS TQPGREEGSP LELERLKLEP HEGLLLR FP YAALE |
-Macromolecule #2: Large neutral amino acids transporter small subunit 1
Macromolecule | Name: Large neutral amino acids transporter small subunit 1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 57.186895 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MADYKDDDDK SGPDEVDASG RAGAGPKRRA LAAPAAEEKE EAREKMLAAK SADGSAPAGE GEGVTLQRNI TLLNGVAIIV GTIIGSGIF VTPTGVLKEA GSPGLALVVW AACGVFSIVG ALCYAELGTT ISKSGGDYAY MLEVYGSLPA FLKLWIELLI I RPSSQYIV ...String: MADYKDDDDK SGPDEVDASG RAGAGPKRRA LAAPAAEEKE EAREKMLAAK SADGSAPAGE GEGVTLQRNI TLLNGVAIIV GTIIGSGIF VTPTGVLKEA GSPGLALVVW AACGVFSIVG ALCYAELGTT ISKSGGDYAY MLEVYGSLPA FLKLWIELLI I RPSSQYIV ALVFATYLLK PLFPTCPVPE EAAKLVACLC VLLLTAVNCY SVKAATRVQD AFAAAKLLAL ALIILLGFVQ IG KGDVSNL DPNFSFEGTK LDVGNIVLAL YSGLFAYGGW NYLNFVTEEM INPYRNLPLA IIISLPIVTL VYVLTNLAYF TTL STEQML SSEAVAVDFG NYHLGVMSWI IPVFVGLSCF GSVNGSLFTS SRLFFVGSRE GHLPSILSMI HPQLLTPVPS LVFT CVMTL LYAFSKDIFS VINFFSFFNW LCVALAIIGM IWLRHRKPEL ERPIKVNLAL PVFFILACLF LIAVSFWKTP VECGI GFTI ILSGLPVYFF GVWWKNKPKW LLQGIFSTTV LCQKLMQVVP QET |
-Macromolecule #4: 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE
Macromolecule | Name: 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE / type: ligand / ID: 4 / Number of copies: 1 / Formula: 3PH |
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Molecular weight | Theoretical: 704.998 Da |
Chemical component information | ![]() ChemComp-3PH: |
-Macromolecule #5: (2~{S})-2-azanyl-7-[(2-phenylphenyl)methoxy]-3,4-dihydro-1~{H}-na...
Macromolecule | Name: (2~{S})-2-azanyl-7-[(2-phenylphenyl)methoxy]-3,4-dihydro-1~{H}-naphthalene-2-carboxylic acid type: ligand / ID: 5 / Number of copies: 1 / Formula: HO0 |
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Molecular weight | Theoretical: 373.444 Da |
Chemical component information | ![]() ChemComp-HO0: |
-Macromolecule #6: CHOLESTEROL HEMISUCCINATE
Macromolecule | Name: CHOLESTEROL HEMISUCCINATE / type: ligand / ID: 6 / Number of copies: 2 / Formula: Y01 |
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Molecular weight | Theoretical: 486.726 Da |
Chemical component information | ![]() ChemComp-Y01: |
-Macromolecule #7: water
Macromolecule | Name: water / type: ligand / ID: 7 / Number of copies: 8 / Formula: HOH |
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Molecular weight | Theoretical: 18.015 Da |
Chemical component information | ![]() ChemComp-HOH: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 8 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0.6) / Number images used: 579107 |
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Initial angle assignment | Type: ANGULAR RECONSTITUTION |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |