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- EMDB-25447: The complex of phosphorylated human cystic fibrosis transmembrane... -

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Basic information

Entry
Database: EMDB / ID: EMD-25447
TitleThe complex of phosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) with ATP/Mg and Lumacaftor (VX-809)
Map dataE1371QCFTR/lumacaftor/ATP
Sample
  • Complex: The complex of phosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) with ATP/Mg and Lumacaftor (VX-809)
    • Protein or peptide: Cystic fibrosis transmembrane conductance regulator
    • Protein or peptide: Cystic fibrosis transmembrane conductance regulator
  • Ligand: MAGNESIUM ION
  • Ligand: ADENOSINE-5'-TRIPHOSPHATE
  • Ligand: DODECANE
  • Ligand: DECANE
  • Ligand: CHOLESTEROL
  • Ligand: Lumacaftor
  • Ligand: UNKNOWN ATOM OR ION
  • Ligand: water
KeywordsABC transporter / ion channel / folding correction / MEMBRANE PROTEIN / ATP-BINDING PROTEIN
Function / homology
Function and homology information


positive regulation of voltage-gated chloride channel activity / positive regulation of cyclic nucleotide-gated ion channel activity / Sec61 translocon complex binding / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity / positive regulation of enamel mineralization / transepithelial water transport / RHO GTPases regulate CFTR trafficking / intracellular pH elevation / ATPase-coupled inorganic anion transmembrane transporter activity ...positive regulation of voltage-gated chloride channel activity / positive regulation of cyclic nucleotide-gated ion channel activity / Sec61 translocon complex binding / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity / positive regulation of enamel mineralization / transepithelial water transport / RHO GTPases regulate CFTR trafficking / intracellular pH elevation / ATPase-coupled inorganic anion transmembrane transporter activity / amelogenesis / chloride channel inhibitor activity / Golgi-associated vesicle membrane / multicellular organismal-level water homeostasis / vesicle docking involved in exocytosis / cholesterol transport / membrane hyperpolarization / bicarbonate transmembrane transporter activity / bicarbonate transport / chloride channel regulator activity / chloride transmembrane transporter activity / sperm capacitation / chloride channel activity / cholesterol biosynthetic process / RHOQ GTPase cycle / positive regulation of exocytosis / positive regulation of insulin secretion involved in cellular response to glucose stimulus / chloride channel complex / ATPase-coupled transmembrane transporter activity / ABC-type transporter activity / cellular response to forskolin / cellular response to cAMP / isomerase activity / chloride transmembrane transport / response to endoplasmic reticulum stress / PDZ domain binding / establishment of localization in cell / Defective CFTR causes cystic fibrosis / clathrin-coated endocytic vesicle membrane / Late endosomal microautophagy / ABC-family proteins mediated transport / transmembrane transport / recycling endosome / Aggrephagy / Chaperone Mediated Autophagy / recycling endosome membrane / Cargo recognition for clathrin-mediated endocytosis / Clathrin-mediated endocytosis / protein-folding chaperone binding / early endosome membrane / early endosome / endosome membrane / Ub-specific processing proteases / apical plasma membrane / lysosomal membrane / endoplasmic reticulum membrane / enzyme binding / cell surface / ATP hydrolysis activity / protein-containing complex / ATP binding / membrane / nucleus / plasma membrane / cytosol / cytoplasm
Similarity search - Function
: / CFTR regulator domain / Cystic fibrosis TM conductance regulator (CFTR), regulator domain / Cystic fibrosis transmembrane conductance regulator / 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. ...: / CFTR regulator domain / Cystic fibrosis TM conductance regulator (CFTR), regulator domain / Cystic fibrosis transmembrane conductance regulator / 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
Cystic fibrosis transmembrane conductance regulator
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.7 Å
AuthorsFiedorczuk K / Chen J
Funding support United States, 2 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
Cystic Fibrosis Foundation United States
CitationJournal: Cell / Year: 2022
Title: Mechanism of CFTR correction by type I folding correctors.
Authors: Karol Fiedorczuk / Jue Chen /
Abstract: Small molecule chaperones have been exploited as therapeutics for the hundreds of diseases caused by protein misfolding. The most successful examples are the CFTR correctors, which transformed cystic ...Small molecule chaperones have been exploited as therapeutics for the hundreds of diseases caused by protein misfolding. The most successful examples are the CFTR correctors, which transformed cystic fibrosis therapy. These molecules revert folding defects of the ΔF508 mutant and are widely used to treat patients. To investigate the molecular mechanism of their action, we determined cryo-electron microscopy structures of CFTR in complex with the FDA-approved correctors lumacaftor or tezacaftor. Both drugs insert into a hydrophobic pocket in the first transmembrane domain (TMD1), linking together four helices that are thermodynamically unstable. Mutating residues at the binding site rendered ΔF508-CFTR insensitive to lumacaftor and tezacaftor, underscoring the functional significance of the structural discovery. These results support a mechanism in which the correctors stabilize TMD1 at an early stage of biogenesis, prevent its premature degradation, and thereby allosterically rescuing many disease-causing mutations.
History
DepositionNov 18, 2021-
Header (metadata) releaseJan 12, 2022-
Map releaseJan 12, 2022-
UpdateFeb 28, 2024-
Current statusFeb 28, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.019
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.019
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7svd
  • Surface level: 0.019
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_25447.png

Downloads & links

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Map

FileDownload / File: emd_25447.map.gz / Format: CCP4 / Size: 325 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationE1371QCFTR/lumacaftor/ATP
Voxel sizeX=Y=Z: 0.676 Å
Density
Contour LevelBy AUTHOR: 0.019 / Movie #1: 0.019
Minimum - Maximum-0.03997171 - 0.08111812
Average (Standard dev.)0.000046793615 (±0.0025328994)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions440440440
Spacing440440440
CellA=B=C: 297.44 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.6760.6760.676
M x/y/z440440440
origin x/y/z0.0000.0000.000
length x/y/z297.440297.440297.440
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ400400400
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS440440440
D min/max/mean-0.0400.0810.000

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Supplemental data

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Sample components

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Entire : The complex of phosphorylated human cystic fibrosis transmembrane...

EntireName: The complex of phosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) with ATP/Mg and Lumacaftor (VX-809)
Components
  • Complex: The complex of phosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) with ATP/Mg and Lumacaftor (VX-809)
    • Protein or peptide: Cystic fibrosis transmembrane conductance regulator
    • Protein or peptide: Cystic fibrosis transmembrane conductance regulator
  • Ligand: MAGNESIUM ION
  • Ligand: ADENOSINE-5'-TRIPHOSPHATE
  • Ligand: DODECANE
  • Ligand: DECANE
  • Ligand: CHOLESTEROL
  • Ligand: Lumacaftor
  • Ligand: UNKNOWN ATOM OR ION
  • Ligand: water

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Supramolecule #1: The complex of phosphorylated human cystic fibrosis transmembrane...

SupramoleculeName: The complex of phosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) with ATP/Mg and Lumacaftor (VX-809)
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Cystic fibrosis transmembrane conductance regulator

MacromoleculeName: Cystic fibrosis transmembrane conductance regulator / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: channel-conductance-controlling ATPase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 168.334469 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MQRSPLEKAS VVSKLFFSWT RPILRKGYRQ RLELSDIYQI PSVDSADNLS EKLEREWDRE LASKKNPKLI NALRRCFFWR FMFYGIFLY LGEVTKAVQP LLLGRIIASY DPDNKEERSI AIYLGIGLCL LFIVRTLLLH PAIFGLHHIG MQMRIAMFSL I YKKTLKLS ...String:
MQRSPLEKAS VVSKLFFSWT RPILRKGYRQ RLELSDIYQI PSVDSADNLS EKLEREWDRE LASKKNPKLI NALRRCFFWR FMFYGIFLY LGEVTKAVQP LLLGRIIASY DPDNKEERSI AIYLGIGLCL LFIVRTLLLH PAIFGLHHIG MQMRIAMFSL I YKKTLKLS SRVLDKISIG QLVSLLSNNL NKFDEGLALA HFVWIAPLQV ALLMGLIWEL LQASAFCGLG FLIVLALFQA GL GRMMMKY RDQRAGKISE RLVITSEMIE NIQSVKAYCW EEAMEKMIEN LRQTELKLTR KAAYVRYFNS SAFFFSGFFV VFL SVLPYA LIKGIILRKI FTTISFCIVL RMAVTRQFPW AVQTWYDSLG AINKIQDFLQ KQEYKTLEYN LTTTEVVMEN VTAF WEEGF GELFEKAKQN NNNRKTSNGD DSLFFSNFSL LGTPVLKDIN FKIERGQLLA VAGSTGAGKT SLLMVIMGEL EPSEG KIKH SGRISFCSQF SWIMPGTIKE NIIFGVSYDE YRYRSVIKAC QLEEDISKFA EKDNIVLGEG GITLSGGQRA RISLAR AVY KDADLYLLDS PFGYLDVLTE KEIFESCVCK LMANKTRILV TSKMEHLKKA DKILILHEGS SYFYGTFSEL QNLQPDF SS KLMGCDSFDQ FSAERRNSIL TETLHRFSLE GDAPVSWTET KKQSFKQTGE FGEKRKNSIL NPINSIRKFS IVQKTPLQ M NGIEEDSDEP LERRLSLVPD SEQGEAILPR ISVISTGPTL QARRRQSVLN LMTHSVNQGQ NIHRKTTAST RKVSLAPQA NLTELDIYSR RLSQETGLEI SEEINEEDLK ECFFDDMESI PAVTTWNTYL RYITVHKSLI FVLIWCLVIF LAEVAASLVV LWLLGNTPL QDKGNSTHSR NNSYAVIITS TSSYYVFYIY VGVADTLLAM GFFRGLPLVH TLITVSKILH HKMLHSVLQA P MSTLNTLK AGGILNRFSK DIAILDDLLP LTIFDFIQLL LIVIGAIAVV AVLQPYIFVA TVPVIVAFIM LRAYFLQTSQ QL KQLESEG RSPIFTHLVT SLKGLWTLRA FGRQPYFETL FHKALNLHTA NWFLYLSTLR WFQMRIEMIF VIFFIAVTFI SIL TTGEGE GRVGIILTLA MNIMSTLQWA VNSSIDVDSL MRSVSRVFKF IDMPTEGKPT KSTKPYKNGQ LSKVMIIENS HVKK DDIWP SGGQMTVKDL TAKYTEGGNA ILENISFSIS PGQRVGLLGR TGSGKSTLLS AFLRLLNTEG EIQIDGVSWD SITLQ QWRK AFGVIPQKVF IFSGTFRKNL DPYEQWSDQE IWKVADEVGL RSVIEQFPGK LDFVLVDGGC VLSHGHKQLM CLARSV LSK AKILLLDQPS AHLDPVTYQI IRRTLKQAFA DCTVILCEHR IEAMLECQQF LVIEENKVRQ YDSIQKLLNE RSLFRQA IS PSDRVKLFPH RNSSKCKSKP QIAALKEETE EEVQDTRL

UniProtKB: Cystic fibrosis transmembrane conductance regulator

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Macromolecule #2: Cystic fibrosis transmembrane conductance regulator

MacromoleculeName: Cystic fibrosis transmembrane conductance regulator / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 1.464797 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)

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Macromolecule #3: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 3 / Number of copies: 2 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #4: ADENOSINE-5'-TRIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 4 / Number of copies: 2 / Formula: ATP
Molecular weightTheoretical: 507.181 Da
Chemical component information

ChemComp-ATP:
ADENOSINE-5'-TRIPHOSPHATE / ATP, energy-carrying molecule*YM / Adenosine triphosphate

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Macromolecule #5: DODECANE

MacromoleculeName: DODECANE / type: ligand / ID: 5 / Number of copies: 1 / Formula: D12
Molecular weightTheoretical: 170.335 Da
Chemical component information

ChemComp-D12:
DODECANE / Dodecane

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Macromolecule #6: DECANE

MacromoleculeName: DECANE / type: ligand / ID: 6 / Number of copies: 2 / Formula: D10
Molecular weightTheoretical: 142.282 Da
Chemical component information

ChemComp-D10:
DECANE / Decane

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Macromolecule #7: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 7 / Number of copies: 3 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL / Cholesterol

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Macromolecule #8: Lumacaftor

MacromoleculeName: Lumacaftor / type: ligand / ID: 8 / Number of copies: 1 / Formula: VX8
Molecular weightTheoretical: 452.407 Da
Chemical component information

ChemComp-VX8:
Lumacaftor / Lumacaftor

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Macromolecule #9: UNKNOWN ATOM OR ION

MacromoleculeName: UNKNOWN ATOM OR ION / type: ligand / ID: 9 / Number of copies: 1 / Formula: UNX
Molecular weightTheoretical: 103.12 Da

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Macromolecule #10: water

MacromoleculeName: water / type: ligand / ID: 10 / Number of copies: 2 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER / Water

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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

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 98.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6o1v

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 52920
FSC plot (resolution estimation)

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