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- PDB-5w81: Phosphorylated, ATP-bound structure of zebrafish cystic fibrosis ... -
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Basic information
Entry | Database: PDB / ID: 5w81 | ||||||
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Title | Phosphorylated, ATP-bound structure of zebrafish cystic fibrosis transmembrane conductance regulator (CFTR) | ||||||
![]() | Cystic fibrosis transmembrane conductance regulator | ||||||
![]() | HYDROLASE / CFTR / anion channel / ABC transporter / ATP-bound. | ||||||
Function / homology | ![]() RHO GTPases regulate CFTR trafficking / RHOQ GTPase cycle / Kupffer's vesicle development / lymphoid lineage cell migration into thymus / Spemann organizer formation at the embryonic shield / ABC-family proteins mediated transport / regulation of neutrophil chemotaxis / Aggrephagy / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity ...RHO GTPases regulate CFTR trafficking / RHOQ GTPase cycle / Kupffer's vesicle development / lymphoid lineage cell migration into thymus / Spemann organizer formation at the embryonic shield / ABC-family proteins mediated transport / regulation of neutrophil chemotaxis / Aggrephagy / channel-conductance-controlling ATPase / intracellularly ATP-gated chloride channel activity / transepithelial water transport / respiratory burst involved in defense response / multicellular organismal-level water homeostasis / germ cell migration / bicarbonate transmembrane transporter activity / bicarbonate transport / pancreas development / embryonic hemopoiesis / chloride channel activity / chloride channel complex / T cell differentiation / ATPase-coupled transmembrane transporter activity / ABC-type transporter activity / chloride transmembrane transport / cellular response to forskolin / isomerase activity / recycling endosome membrane / heart development / early endosome membrane / defense response to bacterium / apical plasma membrane / chromatin extrusion motor activity / ATP-dependent H2AZ histone chaperone activity / ATP-dependent H3-H4 histone complex chaperone activity / cohesin loader activity / DNA clamp loader activity / innate immune response / endoplasmic reticulum membrane / ATP hydrolysis activity / ATP binding / membrane / plasma membrane / cytosol Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.37 Å | ||||||
![]() | Zhang, Z. / Liu, F. / Chen, J. | ||||||
![]() | ![]() Title: Conformational Changes of CFTR upon Phosphorylation and ATP Binding. Authors: Zhe Zhang / Fangyu Liu / Jue Chen / ![]() Abstract: The cystic fibrosis transmembrane conductance regulator (CFTR) is an anion channel evolved from an ATP-binding cassette transporter. CFTR channel gating is strictly coupled to phosphorylation and ATP ...The cystic fibrosis transmembrane conductance regulator (CFTR) is an anion channel evolved from an ATP-binding cassette transporter. CFTR channel gating is strictly coupled to phosphorylation and ATP hydrolysis. Previously, we reported essentially identical structures of zebrafish and human CFTR in the dephosphorylated, ATP-free form. Here, we present the structure of zebrafish CFTR in the phosphorylated, ATP-bound conformation, determined by cryoelectron microscopy to 3.4 Å resolution. Comparison of the two conformations shows major structural rearrangements leading to channel opening. The phosphorylated regulatory domain is disengaged from its inhibitory position; the nucleotide-binding domains (NBDs) form a "head-to-tail" dimer upon binding ATP; and the cytoplasmic pathway, found closed off in other ATP-binding cassette transporters, is cracked open, consistent with CFTR's unique channel function. Unexpectedly, the extracellular mouth of the ion pore remains closed, indicating that local movements of the transmembrane helices can control ion access to the pore even in the NBD-dimerized conformation. | ||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 251.9 KB | Display | ![]() |
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PDB format | ![]() | 194.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 960.1 KB | Display | ![]() |
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Full document | ![]() | 962.5 KB | Display | |
Data in XML | ![]() | 35.5 KB | Display | |
Data in CIF | ![]() | 53.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8782MC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 169620.812 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() | ||
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#2: Chemical | #3: Chemical | |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: zebrafish cystic fibrosis transmembrane conductance regulator (CFTR) Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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Molecular weight | Value: 168 kDa/nm / Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.5 |
Specimen | Conc.: 5.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 61199 X / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Average exposure time: 0.14 sec. / Electron dose: 1.68 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 2 / Num. of real images: 7434 |
Image scans | Width: 7420 / Height: 7676 / Movie frames/image: 50 / Used frames/image: 1-50 |
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Processing
EM software |
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CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 900000 | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.37 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 777102 / Symmetry type: POINT |