+Open data
-Basic information
Entry | Database: PDB / ID: 7mxo | ||||||
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Title | CryoEM structure of human NKCC1 | ||||||
Components | Solute carrier family 12 member 2 | ||||||
Keywords | MEMBRANE PROTEIN / Sodium / potassium / chloride / co-transporter / ions / human / CTD / TMD / full-length | ||||||
Function / homology | Function and homology information positive regulation of cell volume / positive regulation of aspartate secretion / transepithelial ammonium transport / regulation of matrix metallopeptidase secretion / cell body membrane / inorganic anion import across plasma membrane / inorganic cation import across plasma membrane / chloride:monoatomic cation symporter activity / sodium:potassium:chloride symporter activity / metal ion transmembrane transporter activity ...positive regulation of cell volume / positive regulation of aspartate secretion / transepithelial ammonium transport / regulation of matrix metallopeptidase secretion / cell body membrane / inorganic anion import across plasma membrane / inorganic cation import across plasma membrane / chloride:monoatomic cation symporter activity / sodium:potassium:chloride symporter activity / metal ion transmembrane transporter activity / transepithelial chloride transport / potassium ion transmembrane transporter activity / Cation-coupled Chloride cotransporters / ammonium transmembrane transport / sodium ion homeostasis / intracellular chloride ion homeostasis / negative regulation of vascular wound healing / chloride ion homeostasis / cellular response to potassium ion / ammonium channel activity / intracellular potassium ion homeostasis / cell projection membrane / intracellular sodium ion homeostasis / sodium ion import across plasma membrane / potassium ion homeostasis / cellular response to chemokine / T cell chemotaxis / hyperosmotic response / gamma-aminobutyric acid signaling pathway / cell volume homeostasis / regulation of spontaneous synaptic transmission / maintenance of blood-brain barrier / potassium ion import across plasma membrane / transport across blood-brain barrier / sodium ion transmembrane transport / lateral plasma membrane / monoatomic ion transport / chloride transmembrane transport / basal plasma membrane / cell projection / cell periphery / Hsp90 protein binding / cytoplasmic vesicle membrane / extracellular vesicle / cell body / protein-folding chaperone binding / basolateral plasma membrane / neuron projection / apical plasma membrane / neuronal cell body / protein kinase binding / extracellular exosome / membrane / plasma membrane Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.47 Å | ||||||
Authors | Moseng, M.A. | ||||||
Funding support | United States, 1items
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Citation | Journal: Sci Adv / Year: 2022 Title: Inhibition mechanism of NKCC1 involves the carboxyl terminus and long-range conformational coupling. Authors: Mitchell A Moseng / Chih-Chia Su / Kerri Rios / Meng Cui / Meinan Lyu / Przemyslaw Glaza / Philip A Klenotic / Eric Delpire / Edward W Yu / Abstract: The Na-K-2Cl cotransporter-1 (NKCC1) is an electroneutral Na-dependent transporter responsible for simultaneously translocating Na, K, and Cl ions into cells. In human tissue, NKCC1 plays a critical ...The Na-K-2Cl cotransporter-1 (NKCC1) is an electroneutral Na-dependent transporter responsible for simultaneously translocating Na, K, and Cl ions into cells. In human tissue, NKCC1 plays a critical role in regulating cytoplasmic volume, fluid intake, chloride homeostasis, and cell polarity. Here, we report four structures of human NKCC1 (hNKCC1), both in the absence and presence of loop diuretic (bumetanide or furosemide), using single-particle cryo-electron microscopy. These structures allow us to directly observe various novel conformations of the hNKCC1 dimer. They also reveal two drug-binding sites located at the transmembrane and cytosolic carboxyl-terminal domains, respectively. Together, our findings enable us to delineate an inhibition mechanism that involves a coupled movement between the cytosolic and transmembrane domains of hNKCC1. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 7mxo.cif.gz | 291 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7mxo.ent.gz | 232.5 KB | Display | PDB format |
PDBx/mmJSON format | 7mxo.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/mx/7mxo ftp://data.pdbj.org/pub/pdb/validation_reports/mx/7mxo | HTTPS FTP |
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-Related structure data
Related structure data | 24074MC 7n3nC 7sflC 7smpC 8steC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 102518.414 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HEK293 / References: UniProt: P55011 #2: Chemical | #3: Chemical | Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Full-length human NKCC1 with NaCl and KCl / Type: COMPLEX / Entity ID: #1 / Source: NATURAL |
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Molecular weight | Value: .131 MDa / Experimental value: YES |
Source (natural) | Organism: Homo sapiens (human) |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
Vitrification | Cryogen name: ETHANE |
-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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
Electron lens | Mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 5000 nm / Nominal defocus min: 1200 nm |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.18rc1_3777: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.47 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 354623 / Symmetry type: POINT | ||||||||||||||||||||||||
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