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- EMDB-13060: Structure of ABCB1/P-glycoprotein in apo state -

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Basic information

Entry
Database: EMDB / ID: EMD-13060
TitleStructure of ABCB1/P-glycoprotein in apo state
Map dataStructure of ABCB1/P-glycoprotein in apo state
Sample
  • Complex: Structure of ABCB1/P-glycoprotein in apo state
    • Protein or peptide: Multidrug resistance protein 1A
Function / homology
Function and homology information


hormone transport / cellular response to borneol / response to codeine / response to cyclosporin A / Atorvastatin ADME / cellular response to mycotoxin / daunorubicin transport / positive regulation of response to drug / response to quercetin / cellular response to external biotic stimulus ...hormone transport / cellular response to borneol / response to codeine / response to cyclosporin A / Atorvastatin ADME / cellular response to mycotoxin / daunorubicin transport / positive regulation of response to drug / response to quercetin / cellular response to external biotic stimulus / regulation of intestinal absorption / negative regulation of sensory perception of pain / response to antineoplastic agent / positive regulation of establishment of Sertoli cell barrier / Prednisone ADME / response to alcohol / ceramide translocation / terpenoid transport / ceramide floppase activity / response to glycoside / floppase activity / establishment of blood-retinal barrier / protein localization to bicellular tight junction / ABC-type oligopeptide transporter activity / ABC-family proteins mediated transport / cellular response to L-glutamate / response to thyroxine / establishment of blood-brain barrier / phosphatidylethanolamine flippase activity / xenobiotic transport across blood-brain barrier / phosphatidylcholine floppase activity / xenobiotic detoxification by transmembrane export across the plasma membrane / export across plasma membrane / intercellular canaliculus / ABC-type xenobiotic transporter / response to vitamin D / P-type phospholipid transporter / ABC-type xenobiotic transporter activity / response to vitamin A / response to glucagon / intestinal absorption / phospholipid translocation / cellular response to antibiotic / cellular hyperosmotic salinity response / maintenance of blood-brain barrier / cellular response to alkaloid / efflux transmembrane transporter activity / xenobiotic transmembrane transporter activity / transmembrane transporter activity / ATPase-coupled transmembrane transporter activity / response to cadmium ion / lactation / cellular response to dexamethasone stimulus / cellular response to estradiol stimulus / response to progesterone / female pregnancy / brush border membrane / placenta development / circadian rhythm / cellular response to tumor necrosis factor / cellular response to lipopolysaccharide / response to hypoxia / response to xenobiotic stimulus / apical plasma membrane / ATP hydrolysis activity / ATP binding / plasma membrane / cytoplasm
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
ATP-dependent translocase ABCB1
Similarity search - Component
Biological speciesMus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.2 Å
AuthorsFord RC / Barbieri A / Thonghin N / Shafi T / Prince SM / Collins RF
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: Membranes (Basel) / Year: 2021
Title: Structure of ABCB1/P-Glycoprotein in the Presence of the CFTR Potentiator Ivacaftor.
Authors: Alessandro Barbieri / Nopnithi Thonghin / Talha Shafi / Stephen M Prince / Richard F Collins / Robert C Ford /
Abstract: ABCB1/P-glycoprotein is an ATP binding cassette transporter that is involved in the clearance of xenobiotics, and it affects the disposition of many drugs in the body. Conformational flexibility of ...ABCB1/P-glycoprotein is an ATP binding cassette transporter that is involved in the clearance of xenobiotics, and it affects the disposition of many drugs in the body. Conformational flexibility of the protein within the membrane is an intrinsic part of its mechanism of action, but this has made structural studies challenging. Here, we have studied different conformations of P-glycoprotein simultaneously in the presence of ivacaftor, a known competitive inhibitor. In order to conduct this, we used high contrast cryo-electron microscopy imaging with a Volta phase plate. We associate the presence of ivacaftor with the appearance of an additional density in one of the conformational states detected. The additional density is in the central aqueous cavity and is associated with a wider separation of the two halves of the transporter in the inward-facing state. Conformational changes to the nucleotide-binding domains are also observed and may help to explain the stimulation of ATPase activity that occurs when transported substrate is bound in many ATP binding cassette transporters.
History
DepositionJun 10, 2021-
Header (metadata) releaseDec 8, 2021-
Map releaseDec 8, 2021-
UpdateJan 5, 2022-
Current statusJan 5, 2022Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 1.05
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 1.05
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7oti
  • Surface level: 1.2
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7oti
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_13060.png

Downloads & links

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Map

FileDownload / File: emd_13060.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationStructure of ABCB1/P-glycoprotein in apo state
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.04 Å/pix.
x 220 pix.
= 229.46 Å		1.04 Å/pix.
x 220 pix.
= 229.46 Å		1.04 Å/pix.
x 220 pix.
= 229.46 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.043 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 1.05 / Movie #1: 1.05
Minimum - Maximum-2.2252736 - 4.731945
Average (Standard dev.)0.0069710575 (±0.21030474)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions220220220
Spacing220220220
CellA=B=C: 229.45999 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0431.0431.043
M x/y/z220220220
origin x/y/z0.0000.0000.000
length x/y/z229.460229.460229.460
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS220220220
D min/max/mean-2.2254.7320.007

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Supplemental data

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Sample components

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Entire : Structure of ABCB1/P-glycoprotein in apo state

EntireName: Structure of ABCB1/P-glycoprotein in apo state
Components
  • Complex: Structure of ABCB1/P-glycoprotein in apo state
    • Protein or peptide: Multidrug resistance protein 1A

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Supramolecule #1: Structure of ABCB1/P-glycoprotein in apo state

SupramoleculeName: Structure of ABCB1/P-glycoprotein in apo state / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Mus musculus (house mouse)
Recombinant expressionOrganism: Komagataella pastoris (fungus)

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Macromolecule #1: Multidrug resistance protein 1A

MacromoleculeName: Multidrug resistance protein 1A / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: xenobiotic-transporting ATPase
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 141.877875 KDa
Recombinant expressionOrganism: Komagataella pastoris (fungus)
SequenceString: MELEEDLKGR ADKNFSKMGK KSKKEKKEKK PAVSVLTMFR YAGWLDRLYM LVGTLAAIIH GVALPLMMLI FGDMTDSFAS VGNVSKNST NMSEADKRAM FAKLEEEMTT YAYYYTGIGA GVLIVAYIQV SFWCLAAGRQ IHKIRQKFFH AIMNQEIGWF D VHDVGELN ...String:
MELEEDLKGR ADKNFSKMGK KSKKEKKEKK PAVSVLTMFR YAGWLDRLYM LVGTLAAIIH GVALPLMMLI FGDMTDSFAS VGNVSKNST NMSEADKRAM FAKLEEEMTT YAYYYTGIGA GVLIVAYIQV SFWCLAAGRQ IHKIRQKFFH AIMNQEIGWF D VHDVGELN TRLTDDVSKI NEGIGDKIGM FFQAMATFFG GFIIGFTRGW KLTLVILAIS PVLGLSAGIW AKILSSFTDK EL HAYAKAG AVAEEVLAAI RTVIAFGGQK KELERYNNNL EEAKRLGIKK AITANISMGA AFLLIYASYA LAFWYGTSLV ISK EYSIGQ VLTVFFSVLI GAFSVGQASP NIEAFANARG AAYEVFKIID NKPSIDSFSK SGHKPDNIQG NLEFKNIHFS YPSR KEVQI LKGLNLKVKS GQTVALVGNS GCGKSTTVQL MQRLYDPLDG MVSIDGQDIR TINVRYLREI IGVVSQEPVL FATTI AENI RYGREDVTMD EIEKAVKEAN AYDFIMKLPH QFDTLVGERG AQLSGGQKQR IAIARALVRN PKILLLDEAT SALDTE SEA VVQAALDKAR EGRTTIVIAH RLSTVRNADV IAGFDGGVIV EQGNHDELMR EKGIYFKLVM TQTAGNEIEL GNEACKS KD EIDNLDMSSK DSGSSLIRRR STRKSICGPH DQDRKLSTKE ALDEDVPPAS FWRILKLNST EWPYFVVGIF CAIINGGL Q PAFSVIFSKV VGVFTNGGPP ETQRQNSNLF SLLFLILGII SFITFFLQGF TFGKAGEILT KRLRYMVFKS MLRQDVSWF DDPKNTTGAL TTRLANDAAQ VKGATGSRLA VIFQNIANLG TGIIISLIYG WQLTLLLLAI VPIIAIAGVV EMKMLSGQAL KDKKELEGS GKIATEAIEN FRTVVSLTRE QKFETMYAQS LQIPYRNAMK KAHVFGITFS FTQAMMYFSY AACFRFGAYL V TQQLMTFE NVLLVFSAIV FGAMAVGQVS SFAPDYAKAT VSASHIIRII EKTPEIDSYS TQGLKPNMLE GNVQFSGVVF NY PTRPSIP VLQGLSLEVK KGQTLALVGS SGCGKSTVVQ LLERFYDPMA GSVFLDGKEI KQLNVQWLRA QLGIVSQEPI LFD CSIAEN IAYGDNSRVV SYEEIVRAAK EANIHQFIDS LPDKYNTRVG DKGTQLSGGQ KQRIAIARAL VRQPHILLLD EATS ALDTE SEKVVQEALD KAREGRTCIV IAHRLSTIQN ADLIVVIQNG KVKEHGTHQQ LLAQKGIYFS MVSVQAGAKR SLEHH HHHH

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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

Concentration1.1 mg/mL
BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsPhase plate: VOLTA PHASE PLATE / Spherical aberration corrector: 2.7
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 64.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 317000
CTF correctionSoftware - Name: CTFFIND
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 104000
Initial angle assignmentType: OTHER / Software - Name: cisTEM
Final angle assignmentType: OTHER / Software - Name: cisTEM
Final 3D classificationNumber classes: 1

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