[English] 日本語
![](img/lk-miru.gif)
- PDB-8sbe: Structure of the rat vesicular glutamate transporter 2 determined... -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 8sbe | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Structure of the rat vesicular glutamate transporter 2 determined by single-particle Cryo-EM | ||||||||||||
![]() | Vesicular glutamate transporter 2 | ||||||||||||
![]() | MEMBRANE PROTEIN / glutamate transport / synaptic vesicle / Major facilitator Superfamily / excitatory neurotransmission | ||||||||||||
Function / homology | ![]() sodium:phosphate symporter activity / sodium-dependent phosphate transport / phosphate ion uniporter activity / L-glutamate uniporter activity / pericellular basket / Organic anion transporters / neurotransmitter uptake / neurotransmitter loading into synaptic vesicle / L-glutamate import / hyaloid vascular plexus regression ...sodium:phosphate symporter activity / sodium-dependent phosphate transport / phosphate ion uniporter activity / L-glutamate uniporter activity / pericellular basket / Organic anion transporters / neurotransmitter uptake / neurotransmitter loading into synaptic vesicle / L-glutamate import / hyaloid vascular plexus regression / phosphate ion transport / L-glutamate transmembrane transport / potassium:proton antiporter activity / L-glutamate transmembrane transporter activity / phosphate ion homeostasis / neurotransmitter transmembrane transporter activity / neural retina development / regulation of synapse structure or activity / monoatomic anion transport / chloride channel activity / chloride channel complex / excitatory synapse / synaptic transmission, glutamatergic / hippocampus development / synaptic vesicle membrane / synaptic vesicle / presynapse / early endosome / neuron projection / plasma membrane Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å | ||||||||||||
![]() | Li, F. / Finer-Moore, J. / Eriksen, J. / Cheng, Y. / Edwards, R. / Stroud, R. | ||||||||||||
Funding support | ![]()
| ||||||||||||
![]() | ![]() Title: Ion transport and regulation in a synaptic vesicle glutamate transporter. Authors: Fei Li / Jacob Eriksen / Janet Finer-Moore / Roger Chang / Phuong Nguyen / Alisa Bowen / Alexander Myasnikov / Zanlin Yu / David Bulkley / Yifan Cheng / Robert H Edwards / Robert M Stroud / ![]() Abstract: Synaptic vesicles accumulate neurotransmitters, enabling the quantal release by exocytosis that underlies synaptic transmission. Specific neurotransmitter transporters are responsible for this ...Synaptic vesicles accumulate neurotransmitters, enabling the quantal release by exocytosis that underlies synaptic transmission. Specific neurotransmitter transporters are responsible for this activity and therefore are essential for brain function. The vesicular glutamate transporters (VGLUTs) concentrate the principal excitatory neurotransmitter glutamate into synaptic vesicles, driven by membrane potential. However, the mechanism by which they do so remains poorly understood owing to a lack of structural information. We report the cryo-electron microscopy structure of rat VGLUT2 at 3.8-angstrom resolution and propose structure-based mechanisms for substrate recognition and allosteric activation by low pH and chloride. A potential permeation pathway for chloride intersects with the glutamate binding site. These results demonstrate how the activity of VGLUTs can be coordinated with large shifts in proton and chloride concentrations during the synaptic vesicle cycle to ensure normal synaptic transmission. | ||||||||||||
History |
|
-
Structure visualization
Structure viewer | Molecule: ![]() ![]() |
---|
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 86.4 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 59.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
---|
-Related structure data
Related structure data | ![]() 21040MC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
#1: Protein | Mass: 58893.008 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: synonyms: VGLUT2, differentiation-associated BNPI, solute carrier family 17 member 6, Differentiation-associated NA(+)-dependent inorganic phosphate cotransporter Source: (gene. exp.) ![]() ![]() ![]() ![]() |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: Vesicular glutamate transporter 2 in complex with a high-affinity Fab Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
---|---|
Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.4 |
Specimen | Conc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TALOS ARCTICA |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Calibrated magnification: 36000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Electron dose: 55 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of real images: 5704 |
-
Processing
Software |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software |
| ||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Particle selection | Num. of particles selected: 1919729 | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 243615 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 119.39 Å2 | ||||||||||||||||||||||||
Refine LS restraints |
|