+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-13060 | |||||||||
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Title | Structure of ABCB1/P-glycoprotein in apo state | |||||||||
Map data | Structure of ABCB1/P-glycoprotein in apo state | |||||||||
Sample |
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Keywords | ABCB1 / ABC Transporters / Membrane Proteins / Ivacaftor / MDR1 / Multidrug resistance / cryo-em / MEMBRANE PROTEIN | |||||||||
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 / negative regulation of sensory perception of pain ...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 / negative regulation of sensory perception of pain / regulation of intestinal absorption / cellular response to external biotic stimulus / response to antineoplastic agent / positive regulation of establishment of Sertoli cell barrier / Prednisone ADME / terpenoid transport / ceramide floppase activity / response to glycoside / ceramide translocation / floppase activity / establishment of blood-retinal barrier / protein localization to bicellular tight junction / response to alcohol / ABC-family proteins mediated transport / phosphatidylethanolamine flippase activity / response to thyroxine / establishment of blood-brain barrier / phosphatidylcholine floppase activity / xenobiotic transport across blood-brain barrier / export across plasma membrane / ABC-type xenobiotic transporter / xenobiotic detoxification by transmembrane export across the plasma membrane / cellular response to L-glutamate / intercellular canaliculus / P-type phospholipid transporter / response to vitamin D / ABC-type xenobiotic transporter activity / response to vitamin A / intestinal absorption / response to glucagon / 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 / ATPase-coupled transmembrane transporter activity / 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 | |||||||||
Biological species | Mus musculus (house mouse) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.2 Å | |||||||||
Authors | Ford RC / Barbieri A | |||||||||
Funding support | 1 items
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Citation | Journal: 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 |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_13060.map.gz | 37.7 MB | EMDB map data format | |
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Header (meta data) | emd-13060-v30.xml emd-13060.xml | 10.9 KB 10.9 KB | Display Display | EMDB header |
Images | emd_13060.png | 105.8 KB | ||
Filedesc metadata | emd-13060.cif.gz | 5.9 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-13060 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-13060 | HTTPS FTP |
-Validation report
Summary document | emd_13060_validation.pdf.gz | 524.8 KB | Display | EMDB validaton report |
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Full document | emd_13060_full_validation.pdf.gz | 524.3 KB | Display | |
Data in XML | emd_13060_validation.xml.gz | 6.1 KB | Display | |
Data in CIF | emd_13060_validation.cif.gz | 7 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13060 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13060 | HTTPS FTP |
-Related structure data
Related structure data | 7otiMC 7otgC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_13060.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Structure of ABCB1/P-glycoprotein in apo state | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.043 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : Structure of ABCB1/P-glycoprotein in apo state
Entire | Name: Structure of ABCB1/P-glycoprotein in apo state |
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Components |
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-Supramolecule #1: Structure of ABCB1/P-glycoprotein in apo state
Supramolecule | Name: Structure of ABCB1/P-glycoprotein in apo state / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Mus musculus (house mouse) |
-Macromolecule #1: Multidrug resistance protein 1A
Macromolecule | Name: Multidrug resistance protein 1A / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: xenobiotic-transporting ATPase |
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Source (natural) | Organism: Mus musculus (house mouse) |
Molecular weight | Theoretical: 141.877875 KDa |
Recombinant expression | Organism: Komagataella pastoris (fungus) |
Sequence | String: 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 UniProtKB: ATP-dependent translocase ABCB1 |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 1.1 mg/mL |
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Buffer | pH: 8 |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Phase plate: VOLTA PHASE PLATE / Spherical aberration corrector: 2.7 |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 64.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |