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- PDB-8gls: Complex of human cystic fibrosis transmembrane conductance regula... -

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Basic information

Entry
Database: PDB / ID: 8gls
TitleComplex of human cystic fibrosis transmembrane conductance regulator (CFTR) and Z1834339853
Components
  • Cystic fibrosis transmembrane conductance regulator
  • human cystic fibrosis transmembrane conductance regulator
KeywordsTRANSPORT PROTEIN / transporter / ion channel
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 / amelogenesis ...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 / amelogenesis / chloride channel inhibitor activity / ATPase-coupled inorganic anion transmembrane transporter activity / Golgi-associated vesicle membrane / multicellular organismal-level water homeostasis / cholesterol transport / bicarbonate transport / bicarbonate transmembrane transporter activity / membrane hyperpolarization / vesicle docking involved in exocytosis / chloride channel regulator activity / chloride transmembrane transporter activity / sperm capacitation / cholesterol biosynthetic process / chloride channel activity / RHOQ GTPase cycle / positive regulation of exocytosis / positive regulation of insulin secretion involved in cellular response to glucose stimulus / ATPase-coupled transmembrane transporter activity / chloride channel complex / ABC-type transporter activity / cellular response to cAMP / 14-3-3 protein binding / cellular response to forskolin / chloride transmembrane transport / response to endoplasmic reticulum stress / PDZ domain binding / isomerase activity / establishment of localization in cell / Defective CFTR causes cystic fibrosis / clathrin-coated endocytic vesicle membrane / Late endosomal microautophagy / recycling endosome / ABC-family proteins mediated transport / transmembrane transport / recycling endosome membrane / Chaperone Mediated Autophagy / Aggrephagy / 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 / protein-containing complex / ATP hydrolysis activity / ATP binding / nucleus / membrane / 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 ...: / 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
ADENOSINE-5'-TRIPHOSPHATE / Chem-POV / : / Cystic fibrosis transmembrane conductance regulator
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsLiu, F. / Chen, J.
Funding support1items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI)
CitationJournal: Cell / Year: 2024
Title: Structure-based discovery of CFTR potentiators and inhibitors.
Authors: Fangyu Liu / Anat Levit Kaplan / Jesper Levring / Jürgen Einsiedel / Stephanie Tiedt / Katharina Distler / Natalie S Omattage / Ivan S Kondratov / Yurii S Moroz / Harlan L Pietz / John J ...Authors: Fangyu Liu / Anat Levit Kaplan / Jesper Levring / Jürgen Einsiedel / Stephanie Tiedt / Katharina Distler / Natalie S Omattage / Ivan S Kondratov / Yurii S Moroz / Harlan L Pietz / John J Irwin / Peter Gmeiner / Brian K Shoichet / Jue Chen /
Abstract: The cystic fibrosis transmembrane conductance regulator (CFTR) is a crucial ion channel whose loss of function leads to cystic fibrosis, whereas its hyperactivation leads to secretory diarrhea. Small ...The cystic fibrosis transmembrane conductance regulator (CFTR) is a crucial ion channel whose loss of function leads to cystic fibrosis, whereas its hyperactivation leads to secretory diarrhea. Small molecules that improve CFTR folding (correctors) or function (potentiators) are clinically available. However, the only potentiator, ivacaftor, has suboptimal pharmacokinetics and inhibitors have yet to be clinically developed. Here, we combine molecular docking, electrophysiology, cryo-EM, and medicinal chemistry to identify CFTR modulators. We docked ∼155 million molecules into the potentiator site on CFTR, synthesized 53 test ligands, and used structure-based optimization to identify candidate modulators. This approach uncovered mid-nanomolar potentiators, as well as inhibitors, that bind to the same allosteric site. These molecules represent potential leads for the development of more effective drugs for cystic fibrosis and secretory diarrhea, demonstrating the feasibility of large-scale docking for ion channel drug discovery.
History
DepositionMar 23, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 26, 2024Provider: repository / Type: Initial release
Revision 1.0Jun 26, 2024Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
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Revision 1.0Jun 26, 2024Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
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Revision 1.0Jun 26, 2024Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Jan 8, 2025Group: Data collection / Database references / Structure summary
Category: citation / citation_author ...citation / citation_author / em_admin / pdbx_entry_details
Item: _citation.journal_abbrev / _citation.journal_id_CSD ..._citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.2May 14, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1May 14, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Cystic fibrosis transmembrane conductance regulator
B: human cystic fibrosis transmembrane conductance regulator
hetero molecules


Theoretical massNumber of molelcules
Total (without water)174,97612
Polymers169,7992
Non-polymers5,17710
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein / Protein/peptide , 2 types, 2 molecules AB

#1: Protein Cystic fibrosis transmembrane conductance regulator / CFTR / ATP-binding cassette sub-family C member 7 / Channel conductance-controlling ATPase / cAMP- ...CFTR / ATP-binding cassette sub-family C member 7 / Channel conductance-controlling ATPase / cAMP-dependent chloride channel


Mass: 168334.469 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CFTR, ABCC7 / Production host: Homo sapiens (human)
References: UniProt: P13569, channel-conductance-controlling ATPase
#2: Protein/peptide human cystic fibrosis transmembrane conductance regulator


Mass: 1464.797 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Non-polymers , 4 types, 10 molecules

#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM
#5: Chemical
ChemComp-POV / (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate / POPC


Mass: 760.076 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C42H82NO8P / Comment: phospholipid*YM
#6: Chemical ChemComp-ZRH / (2S)-1-(3-amino-6-fluoro-1H-indazol-1-yl)-2-methyl-3-phenoxypropan-1-one


Mass: 313.326 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C17H16FN3O2 / Feature type: SUBJECT OF INVESTIGATION

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Details

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: CFTR / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenConc.: 5.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 1.51 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.18_3855: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 106212 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0059912
ELECTRON MICROSCOPYf_angle_d0.94513403
ELECTRON MICROSCOPYf_dihedral_angle_d24.4181372
ELECTRON MICROSCOPYf_chiral_restr0.0761542
ELECTRON MICROSCOPYf_plane_restr0.0041629

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