+
Open data
-
Basic information
Entry | Database: PDB / ID: 7x5h | ||||||
---|---|---|---|---|---|---|---|
Title | Serotonin 5A (5-HT5A) receptor-Gi protein complex | ||||||
![]() |
| ||||||
![]() | MEMBRANE PROTEIN / Serotonin / 5-HT / GPCR / Gi / 5-CT | ||||||
Function / homology | ![]() adenylate cyclase-inhibiting serotonin receptor signaling pathway / Serotonin receptors / serotonin binding / G protein-coupled serotonin receptor activity / postsynaptic specialization membrane / neurotransmitter receptor activity / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling ...adenylate cyclase-inhibiting serotonin receptor signaling pathway / Serotonin receptors / serotonin binding / G protein-coupled serotonin receptor activity / postsynaptic specialization membrane / neurotransmitter receptor activity / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Regulation of insulin secretion / G protein-coupled receptor binding / hippocampus development / electron transport chain / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G-protein activation / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / response to peptide hormone / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / GDP binding / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / response to estradiol / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / cell cortex / midbody / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / chemical synaptic transmission / perikaryon / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / periplasmic space / electron transfer activity / iron ion binding / cell cycle / G protein-coupled receptor signaling pathway / cell division / lysosomal membrane / GTPase activity / centrosome / synapse / dendrite / heme binding / protein-containing complex binding / nucleolus / GTP binding / magnesium ion binding / signal transduction / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||
![]() | Tan, Y. / Xu, P. / Huang, S. / Xu, H.E. / Jiang, Y. | ||||||
Funding support | ![]()
| ||||||
![]() | ![]() Title: Structural insights into the ligand binding and G coupling of serotonin receptor 5-HT. Authors: Yangxia Tan / Peiyu Xu / Sijie Huang / Gong Yang / Fulai Zhou / Xinheng He / Honglei Ma / H Eric Xu / Yi Jiang / ![]() Abstract: 5-hydroxytryptamine receptor 5A (5-HT) belongs to the 5-HT receptor family and signals through the G protein. It is involved in nervous system regulation and an attractive target for the treatment of ...5-hydroxytryptamine receptor 5A (5-HT) belongs to the 5-HT receptor family and signals through the G protein. It is involved in nervous system regulation and an attractive target for the treatment of psychosis, depression, schizophrenia, and neuropathic pain. 5-HT is the only G-coupled 5-HT receptor subtype lacking a high-resolution structure, which hampers the mechanistic understanding of ligand binding and G coupling for 5-HT. Here we report a cryo-electron microscopy structure of the 5-HT-G complex bound to 5-Carboxamidotryptamine (5-CT). Combined with functional analysis, this structure reveals the 5-CT recognition mechanism and identifies the receptor residue at 6.55 as a determinant of the 5-CT selectivity for G-coupled 5-HT receptors. In addition, 5-HT shows an overall conserved G protein coupling mode compared with other G-coupled 5-HT receptors. These findings provide comprehensive insights into the ligand binding and G protein coupling of G-coupled 5-HT receptors and offer a template for the design of 5-HT-selective drugs. | ||||||
History |
|
-
Structure visualization
Structure viewer | Molecule: ![]() ![]() |
---|
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 241.9 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 184.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 844.4 KB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 849.3 KB | Display | |
Data in XML | ![]() | 33.6 KB | Display | |
Data in CIF | ![]() | 51.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 33014MC 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
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABC
#1: Protein | Mass: 40414.047 Da / Num. of mol.: 1 / Mutation: S47N, G203A, E345A, A326S Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
---|---|
#2: Protein | Mass: 40226.992 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#3: Protein | Mass: 7729.947 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Antibody / Protein / Non-polymers , 3 types, 3 molecules ER![](data/chem/img/8K3.gif)
![](data/chem/img/8K3.gif)
#4: Antibody | Mass: 30552.234 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
---|---|
#5: Protein | Mass: 77127.281 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: cybC, HTR5A / Production host: ![]() |
#6: Chemical | ChemComp-8K3 / |
-Details
Has ligand of interest | Y |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Source (natural) |
| ||||||||||||||||||||||||
Source (recombinant) |
| ||||||||||||||||||||||||
Buffer solution | pH: 7.4 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE-PROPANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: OTHER / Accelerating voltage: 300 kV / Illumination mode: OTHER |
Electron lens | Mode: OTHER / Nominal defocus max: 2200 nm / Nominal defocus min: 1200 nm |
Image recording | Electron dose: 70 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-
Processing
Software | Name: PHENIX / Version: 1.20_4459: / Classification: refinement | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 754854 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
|