[English] 日本語

- EMDB-4390: Cryo-EM structure of the adenosine A2A receptor bound to a miniGs... -
+
Open data
-
Basic information
Entry | Database: EMDB / ID: EMD-4390 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of the adenosine A2A receptor bound to a miniGs heterotrimer | |||||||||
![]() | ||||||||||
![]() |
| |||||||||
![]() | G-protein coupled receptor / adenosine / GPCR / A2A receptor / MEMBRANE PROTEIN | |||||||||
Function / homology | ![]() regulation of norepinephrine secretion / positive regulation of circadian sleep/wake cycle, sleep / positive regulation of acetylcholine secretion, neurotransmission / negative regulation of alpha-beta T cell activation / Adenosine P1 receptors / G protein-coupled adenosine receptor activity / response to purine-containing compound / G protein-coupled adenosine receptor signaling pathway / NGF-independant TRKA activation / sensory perception ...regulation of norepinephrine secretion / positive regulation of circadian sleep/wake cycle, sleep / positive regulation of acetylcholine secretion, neurotransmission / negative regulation of alpha-beta T cell activation / Adenosine P1 receptors / G protein-coupled adenosine receptor activity / response to purine-containing compound / G protein-coupled adenosine receptor signaling pathway / NGF-independant TRKA activation / sensory perception / Surfactant metabolism / positive regulation of urine volume / synaptic transmission, dopaminergic / inhibitory postsynaptic potential / type 5 metabotropic glutamate receptor binding / negative regulation of vascular permeability / positive regulation of glutamate secretion / synaptic transmission, cholinergic / response to caffeine / blood circulation / intermediate filament / eating behavior / DNA polymerase processivity factor activity / alpha-actinin binding / presynaptic active zone / regulation of calcium ion transport / protein-disulfide reductase activity / PKA activation in glucagon signalling / membrane depolarization / asymmetric synapse / axolemma / hair follicle placode formation / developmental growth / D1 dopamine receptor binding / phagocytosis / intracellular transport / prepulse inhibition / vascular endothelial cell response to laminar fluid shear stress / cellular defense response / renal water homeostasis / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / presynaptic modulation of chemical synaptic transmission / response to amphetamine / regulation of insulin secretion / cellular response to glucagon stimulus / positive regulation of synaptic transmission, glutamatergic / adenylate cyclase activator activity / cell redox homeostasis / neuron projection morphogenesis / regulation of mitochondrial membrane potential / central nervous system development / positive regulation of apoptotic signaling pathway / trans-Golgi network membrane / positive regulation of long-term synaptic potentiation / excitatory postsynaptic potential / positive regulation of synaptic transmission, GABAergic / synaptic transmission, glutamatergic / positive regulation of protein secretion / locomotory behavior / astrocyte activation / apoptotic signaling pathway / negative regulation of inflammatory response to antigenic stimulus / bone development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / negative regulation of inflammatory response / platelet aggregation / Olfactory Signaling Pathway / cognition / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / blood coagulation / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / vasodilation / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.11 Å | |||||||||
![]() | Garcia-Nafria J / Lee Y | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: Cryo-EM structure of the adenosine A receptor coupled to an engineered heterotrimeric G protein. Authors: Javier García-Nafría / Yang Lee / Xiaochen Bai / Byron Carpenter / Christopher G Tate / ![]() Abstract: The adenosine A receptor (AR) is a prototypical G protein-coupled receptor (GPCR) that couples to the heterotrimeric G protein G. Here, we determine the structure by electron cryo-microscopy (cryo-EM) ...The adenosine A receptor (AR) is a prototypical G protein-coupled receptor (GPCR) that couples to the heterotrimeric G protein G. Here, we determine the structure by electron cryo-microscopy (cryo-EM) of AR at pH 7.5 bound to the small molecule agonist NECA and coupled to an engineered heterotrimeric G protein, which contains mini-G, the βγ subunits and nanobody Nb35. Most regions of the complex have a resolution of ~3.8 Å or better. Comparison with the 3.4 Å resolution crystal structure shows that the receptor and mini-G are virtually identical and that the density of the side chains and ligand are of comparable quality. However, the cryo-EM density map also indicates regions that are flexible in comparison to the crystal structures, which unexpectedly includes regions in the ligand binding pocket. In addition, an interaction between intracellular loop 1 of the receptor and the β subunit of the G protein was observed. | |||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
-
Downloads & links
-EMDB archive
Map data | ![]() | 1.8 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 19.2 KB 19.2 KB | Display Display | ![]() |
Images | ![]() | 136.4 KB | ||
Filedesc metadata | ![]() | 6.7 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6gdgMC M: atomic model generated by this map C: citing same article ( |
---|---|
Similar structure data | |
EM raw data | ![]() Data size: 1.1 TB Data #1: Unaligned multi-frame micrographs [micrographs - multiframe] Data #2: Micelle subtracted particles [picked particles - multiframe - processed] Data #3: Particles before subtraction [picked particles - multiframe - processed]) |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.07 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-
Sample components
+Entire : Adenosine A2A receptor bound to miniGs heterotrimer
+Supramolecule #1: Adenosine A2A receptor bound to miniGs heterotrimer
+Supramolecule #2: Adenosine receptor A2a
+Supramolecule #3: miniGs heterotrimer
+Supramolecule #4: nanobody Nb35
+Macromolecule #1: TrxA,Adenosine receptor A2a
+Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
+Macromolecule #4: Guanine nucleotide-binding protein G(s) subunit alpha isoforms sh...
+Macromolecule #5: nanobody Nb35
+Macromolecule #6: N-ETHYL-5'-CARBOXAMIDO ADENOSINE
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Concentration | 1 mg/mL |
---|---|
Buffer | pH: 7.5 |
Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Average exposure time: 60.0 sec. / Average electron dose: 30.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
+
Image processing
-Atomic model buiding 1
Refinement | Space: RECIPROCAL / Protocol: FLEXIBLE FIT |
---|---|
Output model | ![]() PDB-6gdg: |