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- PDB-9oe1: Zebrafish Abcb4 in IF-narrow conformation in the presence of Tari... -

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Basic information

Entry
Database: PDB / ID: 9oe1
TitleZebrafish Abcb4 in IF-narrow conformation in the presence of Tariquidar (TQR-IF-Narrow)
ComponentsATP-binding cassette, sub-family B (MDR/TAP), member 4
KeywordsTRANSPORT PROTEIN / Multidrug resistance / Zebrafish Abcb4 / P-gp / Tariquidar
Function / homology
Function and homology information


ABC-type protein transporter activity / toxin transmembrane transporter activity / ABC-type xenobiotic transporter / ABC-type xenobiotic transporter activity / ATPase-coupled transmembrane transporter activity / efflux transmembrane transporter activity / transmembrane transport / response to toxic substance / apical plasma membrane / ATP hydrolysis activity / ATP binding
Similarity search - Function
Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. ...Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / tariquidar / ABC-type xenobiotic transporter
Similarity search - Component
Biological speciesDanio rerio (zebrafish)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.02 Å
AuthorsZhan, J. / Xia, D.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI) United States
CitationJournal: To Be Published
Title: Conformational Landscape of Zebrafish Abcb4
Authors: Zhan, J. / Xia, D.
History
DepositionApr 28, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 3, 2026Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: Additional map / Part number: 1 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: Additional map / Part number: 2 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jun 3, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

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Assembly

Deposited unit
A: ATP-binding cassette, sub-family B (MDR/TAP), member 4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)143,4807
Polymers141,0911
Non-polymers2,3896
Water59433
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein ATP-binding cassette, sub-family B (MDR/TAP), member 4


Mass: 141090.938 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Danio rerio (zebrafish) / Gene: abcb4, zgc:172149 / Production host: Komagataella pastoris (fungus) / References: UniProt: E7F1E3
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical ChemComp-AGS / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-GAMMA-S / ADENOSINE 5'-(3-THIOTRIPHOSPHATE) / ADENOSINE 5'-(GAMMA-THIOTRIPHOSPHATE) / ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE


Mass: 523.247 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H16N5O12P3S / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP-gamma-S, energy-carrying molecule analogue*YM
#4: Chemical ChemComp-R1H / tariquidar / ~{N}-[2-[[4-[2-(6,7-dimethoxy-3,4-dihydro-1~{H}-isoquinolin-2-yl)ethyl]phenyl]carbamoyl]-4,5-dimethoxy-phenyl]quinoline-3-carboxamide


Mass: 646.732 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C38H38N4O6 / Feature type: SUBJECT OF INVESTIGATION
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 33 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY
Has protein modificationN

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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: Zebrafish Abcb4 in inward-facing narrow-open conformation in the presence of Tariquidar
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.14 MDa / Experimental value: YES
Source (natural)Organism: Danio rerio (zebrafish)
Source (recombinant)Organism: Komagataella pastoris (fungus)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277.15 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 700 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 54.4 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.21.2_5419 / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.02 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 581887 / Symmetry type: POINT
RefinementCross valid method: NONE

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