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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-4246 | |||||||||
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Title | Structure of inhibitor-bound ABCG2 | |||||||||
![]() | ABCG2-MB136-Fab EM map | |||||||||
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Function / homology | ![]() biotin transmembrane transporter activity / biotin transport / riboflavin transport / riboflavin transmembrane transporter activity / renal urate salt excretion / sphingolipid transporter activity / urate metabolic process / urate transmembrane transporter activity / Abacavir transmembrane transport / organic anion transport ...biotin transmembrane transporter activity / biotin transport / riboflavin transport / riboflavin transmembrane transporter activity / renal urate salt excretion / sphingolipid transporter activity / urate metabolic process / urate transmembrane transporter activity / Abacavir transmembrane transport / organic anion transport / external side of apical plasma membrane / sphingolipid biosynthetic process / organic anion transmembrane transporter activity / Sphingolipid de novo biosynthesis / xenobiotic transport across blood-brain barrier / export across plasma membrane / ABC-type xenobiotic transporter / Paracetamol ADME / transepithelial transport / Ciprofloxacin ADME / cellular detoxification / ABC-type xenobiotic transporter activity / NFE2L2 regulating MDR associated enzymes / ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | ![]() ![]() | |||||||||
![]() | Jackson SM / Manolaridis I / Kowal J / Zechner M / Altmann KH / Locher KP | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis of small-molecule inhibition of human multidrug transporter ABCG2. Authors: Scott M Jackson / Ioannis Manolaridis / Julia Kowal / Melanie Zechner / Nicholas M I Taylor / Manuel Bause / Stefanie Bauer / Ruben Bartholomaeus / Guenther Bernhardt / Burkhard Koenig / ...Authors: Scott M Jackson / Ioannis Manolaridis / Julia Kowal / Melanie Zechner / Nicholas M I Taylor / Manuel Bause / Stefanie Bauer / Ruben Bartholomaeus / Guenther Bernhardt / Burkhard Koenig / Armin Buschauer / Henning Stahlberg / Karl-Heinz Altmann / Kaspar P Locher / ![]() ![]() ![]() Abstract: ABCG2 is an ATP-binding cassette (ABC) transporter that protects tissues against xenobiotics, affects the pharmacokinetics of drugs and contributes to multidrug resistance. Although many inhibitors ...ABCG2 is an ATP-binding cassette (ABC) transporter that protects tissues against xenobiotics, affects the pharmacokinetics of drugs and contributes to multidrug resistance. Although many inhibitors and modulators of ABCG2 have been developed, understanding their structure-activity relationship requires high-resolution structural insight. Here, we present cryo-EM structures of human ABCG2 bound to synthetic derivatives of the fumitremorgin C-related inhibitor Ko143 or the multidrug resistance modulator tariquidar. Both compounds are bound to the central, inward-facing cavity of ABCG2, blocking access for substrates and preventing conformational changes required for ATP hydrolysis. The high resolutions allowed for de novo building of the entire transporter and also revealed tightly bound phospholipids and cholesterol interacting with the lipid-exposed surface of the transmembrane domains (TMDs). Extensive chemical modifications of the Ko143 scaffold combined with in vitro functional analyses revealed the details of ABCG2 interactions with this compound family and provide a basis for the design of novel inhibitors and modulators. | |||||||||
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 | ![]() | 49.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 16.3 KB 16.3 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 8.5 KB | Display | ![]() |
Images | ![]() | 75.4 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6feqMC ![]() 3953C ![]() 4256C ![]() 6etiC ![]() 6ffcC ![]() 6hijC C: citing same article ( M: atomic model generated by this map |
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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 | ABCG2-MB136-Fab EM map | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.065 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 : inhibitor-bound ABCG2
Entire | Name: inhibitor-bound ABCG2 |
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Components |
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-Supramolecule #1: inhibitor-bound ABCG2
Supramolecule | Name: inhibitor-bound ABCG2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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-Supramolecule #2: ABCG2
Supramolecule | Name: ABCG2 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
-Supramolecule #3: inhibitor
Supramolecule | Name: inhibitor / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#3 |
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Source (natural) | Organism: ![]() ![]() ![]() |
-Macromolecule #1: ATP-binding cassette sub-family G member 2
Macromolecule | Name: ATP-binding cassette sub-family G member 2 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 72.385852 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MSSSNVEVFI PVSQGNTNGF PATASNDLKA FTEGAVLSFH NICYRVKLKS GFLPCRKPVE KEILSNINGI MKPGLNAILG PTGGGKSSL LDVLAARKDP SGLSGDVLIN GAPRPANFKC NSGYVVQDDV VMGTLTVREN LQFSAALRLA TTMTNHEKNE R INRVIQEL ...String: MSSSNVEVFI PVSQGNTNGF PATASNDLKA FTEGAVLSFH NICYRVKLKS GFLPCRKPVE KEILSNINGI MKPGLNAILG PTGGGKSSL LDVLAARKDP SGLSGDVLIN GAPRPANFKC NSGYVVQDDV VMGTLTVREN LQFSAALRLA TTMTNHEKNE R INRVIQEL GLDKVADSKV GTQFIRGVSG GERKRTSIGM ELITDPSILF LDEPTTGLDS STANAVLLLL KRMSKQGRTI IF SIHQPRY SIFKLFDSLT LLASGRLMFH GPAQEALGYF ESAGYHCEAY NNPADFFLDI INGDSTAVAL NREEDFKATE IIE PSKQDK PLIEKLAEIY VNSSFYKETK AELHQLSGGE KKKKITVFKE ISYTTSFCHQ LRWVSKRSFK NLLGNPQASI AQII VTVVL GLVIGAIYFG LKNDSTGIQN RAGVLFFLTT NQCFSSVSAV ELFVVEKKLF IHEYISGYYR VSSYFLGKLL SDLLP MRML PSIIFTCIVY FMLGLKPKAD AFFVMMFTLM MVAYSASSMA LAIAAGQSVV SVATLLMTIC FVFMMIFSGL LVNLTT IAS WLSWLQYFSI PRYGFTALQH NEFLGQNFCP GLNATGNNPC NYATCTGEEY LVKQGIDLSP WGLWKNHVAL ACMIVIF LT IAYLKLLFLK KYS |
-Macromolecule #2: 5D3(Fab) light chain variable domain
Macromolecule | Name: 5D3(Fab) light chain variable domain / type: protein_or_peptide / ID: 2 / Details: The variable domain of the light chain of 5D3(Fab) / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() ![]() |
Molecular weight | Theoretical: 23.594016 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: DIVLTQSPSS FSVSLGDRVT ISCKASGYIL NRLAWYQQKP GNAPRLLISG ATSLETGFPS RFSGTGSGKD YTLSISSLQT EDVGTYYCQ QYWSTPWTFG GGTKLEIRRA DAAPTVSIFP PSSEQLTSGG ASVVCFLNNF YPKDINVKWK IDGSERQNGV L NSWTDQDS ...String: DIVLTQSPSS FSVSLGDRVT ISCKASGYIL NRLAWYQQKP GNAPRLLISG ATSLETGFPS RFSGTGSGKD YTLSISSLQT EDVGTYYCQ QYWSTPWTFG GGTKLEIRRA DAAPTVSIFP PSSEQLTSGG ASVVCFLNNF YPKDINVKWK IDGSERQNGV L NSWTDQDS KDSTYSMSST LTLTKDEYER HNSYTCEATH KTSTSPIVKS FNRNEC |
-Macromolecule #3: 5D3(Fab) heavy chain variable domain
Macromolecule | Name: 5D3(Fab) heavy chain variable domain / type: protein_or_peptide / ID: 3 / Details: The variable domain of the heavy chain of 5D3(Fab) / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() ![]() |
Molecular weight | Theoretical: 23.843633 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: QVQLQESGPG LVKPSQSLSL TCTVTGFSIT SDYAWNWIRQ FPGKKLEWMG YINFDGGTTY NPSLRGRISI TRDTSKNQFF LQLRSVTPE DTATYYCATF YGAKGTLDYW GQGTSVTVSS AKTTPPSVYP LAPVCGDTSG SSVTLGCLVK GYFPEPVTLT W NSGSLSSG ...String: QVQLQESGPG LVKPSQSLSL TCTVTGFSIT SDYAWNWIRQ FPGKKLEWMG YINFDGGTTY NPSLRGRISI TRDTSKNQFF LQLRSVTPE DTATYYCATF YGAKGTLDYW GQGTSVTVSS AKTTPPSVYP LAPVCGDTSG SSVTLGCLVK GYFPEPVTLT W NSGSLSSG VHTFPAVLQS DLYTLSSSVT VTSSTWPSQS ITCNVAHPAS STKVDKKIEP RGP |
-Macromolecule #4: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 2 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Macromolecule #5: ~{N}-[5-[1-[4-[2-[6-methoxy-7-[2-[2-(2-methoxyethoxy)ethoxy]ethox...
Macromolecule | Name: ~{N}-[5-[1-[4-[2-[6-methoxy-7-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]-3,4-dihydro-1~{H}-isoquinolin-2-yl]ethyl]phenyl]-1,2,3-triazol-4-yl]-2-propanoyl-phenyl]quinoline-2-carboxamide type: ligand / ID: 5 / Number of copies: 1 / Formula: D6T |
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Molecular weight | Theoretical: 798.925 Da |
Chemical component information | ![]() ChemComp-D6T: |
-Experimental details
-Structure determination
Method | ![]() |
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Aggregation state | particle |
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Sample preparation
Concentration | 0.4 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE-PROPANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD![]() |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Number real images: 2468 / Average exposure time: 0.25 sec. / Average electron dose: 1.55 e/Å2 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Overall B value: 163 |
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Output model | ![]() PDB-6feq: |