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- PDB-6hij: Cryo-EM structure of the human ABCG2-MZ29-Fab complex with choles... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6hij | |||||||||
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Title | Cryo-EM structure of the human ABCG2-MZ29-Fab complex with cholesterol and PE lipids docked | |||||||||
![]() | ATP-binding cassette sub-family G member 2 | |||||||||
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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 | ![]() ![]() | |||||||||
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![]() | Jackson, S.M. / Manolaridis, I. / Kowal, J. / Zechner, M. / Taylor, N.M.I. / Bause, M. / Bauer, S. / Bartholomaeus, R. / Stahlberg, H. / Bernhardt, G. ...Jackson, S.M. / Manolaridis, I. / Kowal, J. / Zechner, M. / Taylor, N.M.I. / Bause, M. / Bauer, S. / Bartholomaeus, R. / Stahlberg, H. / Bernhardt, G. / Koenig, B. / Buschauer, A. / Altmann, K.H. / Locher, K.P. | |||||||||
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. | |||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 214.7 KB | Display | ![]() |
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PDB format | ![]() | 182.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 4256MC ![]() 3953C ![]() 4246C ![]() 6etiC ![]() 6feqC ![]() 6ffcC C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 72385.852 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Chemical | ChemComp-PEE / ![]() #3: Chemical | ChemComp-CLR / ![]() #4: Chemical | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: ![]() |
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Sample preparation
Component | Name: ATP-binding cassette sub-family G member 2 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Conc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied![]() ![]() |
Vitrification![]() | Cryogen name: ETHANE-PROPANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source![]() ![]() |
Electron lens | Mode: BRIGHT FIELD![]() |
Image recording | Electron dose: 100 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.12_2829: / Classification: refinement | ||||||||||||||||||||||||
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EM software |
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CTF correction![]() | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Particle selection | Num. of particles selected: 2098186 | ||||||||||||||||||||||||
Symmetry | Point symmetry![]() ![]() | ||||||||||||||||||||||||
3D reconstruction![]() | Resolution: 3.56 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 402348 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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