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- EMDB-34909: Cryo-EM structure of human OATP1B1 in apo state -

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Basic information

Entry
Database: EMDB / ID: EMD-34909
TitleCryo-EM structure of human OATP1B1 in apo state
Map datahalf2 map
Sample
  • Complex: OATP1B1
    • Protein or peptide: Solute carrier organic anion transporter family member 1B1
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
Keywordstransporter / OATP1B1 / organic anion transporting peptide / MEMBRANE PROTEIN
Function / homology
Function and homology information


Defective SLCO1B1 causes hyperbilirubinemia, Rotor type (HBLRR) / Transport of organic anions / sodium-independent organic anion transmembrane transporter activity / sodium-independent organic anion transport / thyroid hormone transmembrane transporter activity / bile acid transmembrane transporter activity / prostaglandin transmembrane transporter activity / organic anion transport / heme catabolic process / Atorvastatin ADME ...Defective SLCO1B1 causes hyperbilirubinemia, Rotor type (HBLRR) / Transport of organic anions / sodium-independent organic anion transmembrane transporter activity / sodium-independent organic anion transport / thyroid hormone transmembrane transporter activity / bile acid transmembrane transporter activity / prostaglandin transmembrane transporter activity / organic anion transport / heme catabolic process / Atorvastatin ADME / organic anion transmembrane transporter activity / bile acid and bile salt transport / Heme degradation / monoatomic ion transport / Recycling of bile acids and salts / xenobiotic metabolic process / basal plasma membrane / basolateral plasma membrane / membrane / plasma membrane
Similarity search - Function
Organic anion transporter polypeptide / Organic Anion Transporter Polypeptide (OATP) family / Kazal-type serine protease inhibitor domain / Kazal domain superfamily / Kazal domain / Kazal domain profile. / Major facilitator superfamily domain / Major facilitator superfamily (MFS) profile. / MFS transporter superfamily
Similarity search - Domain/homology
Solute carrier organic anion transporter family member 1B1
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.53 Å
AuthorsShan Z / Yang X / Zhang Y / Nan J / Yuan Y
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Cell Res / Year: 2023
Title: Cryo-EM structures of human organic anion transporting polypeptide OATP1B1.
Authors: Ziyang Shan / Xuemei Yang / Huihui Liu / Yafei Yuan / Yuan Xiao / Jing Nan / Wei Zhang / Wenqi Song / Jufang Wang / Feiwen Wei / Yanqing Zhang /
Abstract: Members of the solute carrier organic anion transporting polypeptide (OATPs) family function as transporters for a large variety of amphipathic organic anions including endogenous metabolites and ...Members of the solute carrier organic anion transporting polypeptide (OATPs) family function as transporters for a large variety of amphipathic organic anions including endogenous metabolites and clinical drugs, such as bile salts, steroids, thyroid hormones, statins, antibiotics, antivirals, and anticancer drugs. OATP1B1 plays a vital role in transporting such substances into the liver for hepatic clearance. FDA and EMA recommend conducting in vitro testing of drug-drug interactions (DDIs) involving OATP1B1. However, the structure and working mechanism of OATPs still remains elusive. In this study, we determined cryo-EM structures of human OATP1B1 bound with representative endogenous metabolites (bilirubin and estrone-3-sulfate), a clinical drug (simeprevir), and a fluorescent indicator (2',7'-dichlorofluorescein), in both outward- and inward-open states. These structures reveal major and minor substrate binding pockets and conformational changes during transport. In combination with mutagenesis studies and molecular dynamics simulations, our work comprehensively elucidates the transport mechanism of OATP1B1 and provides the structural basis for DDI predictions involving OATP1B1, which will greatly promote our understanding of OATPs.
History
DepositionDec 7, 2022-
Header (metadata) releaseSep 13, 2023-
Map releaseSep 13, 2023-
UpdateDec 20, 2023-
Current statusDec 20, 2023Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_34909.png

Downloads & links

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Map

FileDownload / File: emd_34909.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationhalf2 map
Voxel sizeX=Y=Z: 0.832 Å
Density
Contour LevelBy AUTHOR: 0.045
Minimum - Maximum-0.82572126 - 1.1104375
Average (Standard dev.)0.00026322322 (±0.020694917)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 212.992 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: half1 map

Fileemd_34909_half_map_1.map
Annotationhalf1 map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half1 map

Fileemd_34909_half_map_2.map
Annotationhalf1 map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : OATP1B1

EntireName: OATP1B1
Components
  • Complex: OATP1B1
    • Protein or peptide: Solute carrier organic anion transporter family member 1B1
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: OATP1B1

SupramoleculeName: OATP1B1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Solute carrier organic anion transporter family member 1B1

MacromoleculeName: Solute carrier organic anion transporter family member 1B1
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 78.79075 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MADYKDDDDK SGPDEVDASG RMDQNQHLNK TAEAQPSENK KTRYCNGLKM FLAALSLSFI AKTLGAIIMK SSIIHIERRF EISSSLVGF IDGSFEIGNL LVIVFVSYFG SKLHRPKLIG IGCFIMGIGG VLTALPHFFM GYYRYSKETN INSSENSTST L STCLINQI ...String:
MADYKDDDDK SGPDEVDASG RMDQNQHLNK TAEAQPSENK KTRYCNGLKM FLAALSLSFI AKTLGAIIMK SSIIHIERRF EISSSLVGF IDGSFEIGNL LVIVFVSYFG SKLHRPKLIG IGCFIMGIGG VLTALPHFFM GYYRYSKETN INSSENSTST L STCLINQI LSLNRASPEI VGKGCLKESG SYMWIYVFMG NMLRGIGETP IVPLGLSYID DFAKEGHSSL YLGILNAIAM IG PIIGFTL GSLFSKMYVD IGYVDLSTIR ITPTDSRWVG AWWLNFLVSG LFSIISSIPF FFLPQTPNKP QKERKASLSL HVL ETNDEK DQTANLTNQG KNITKNVTGF FQSFKSILTN PLYVMFVLLT LLQVSSYIGA FTYVFKYVEQ QYGQPSSKAN ILLG VITIP IFASGMFLGG YIIKKFKLNT VGIAKFSCFT AVMSLSFYLL YFFILCENKS VAGLTMTYDG NNPVTSHRDV PLSYC NSDC NCDESQWEPV CGNNGITYIS PCLAGCKSSS GNKKPIVFYN CSCLEVTGLQ NRNYSAHLGE CPRDDACTRK FYFFVA IQV LNLFFSALGG TSHVMLIVKI VQPELKSLAL GFHSMVIRAL GGILAPIYFG ALIDTTCIKW STNNCGTRGS CRTYNST SF SRVYLGLSSM LRVSSLVLYI ILIYAMKKKY QEKDINASEN GSVMDEANLE SLNKNKHFVP SAGADSETHC

UniProtKB: Solute carrier organic anion transporter family member 1B1

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Macromolecule #3: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 3 / Number of copies: 1 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration9 mg/mL
BufferpH: 8
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 281 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 2.3000000000000003 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 105000
Specialist opticsEnergy filter - Name: GIF Quantum ER / Energy filter - Slit width: 20 eV
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.53 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 325578
FSC plot (resolution estimation)

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