- EMDB-24733: Oxytocin receptor (OTR) bound to oxytocin in complex with a heter... -
+
Open data
ID or keywords:
Loading...
-
Basic information
Entry
Database: EMDB / ID: EMD-24733
Title
Oxytocin receptor (OTR) bound to oxytocin in complex with a heterotrimeric Gq protein
Map data
Combined map from local refinements
Sample
Complex: Oxytocin receptor signaling complex with oxytocin and miniGq and an scFv
Complex: Oxytocin
Protein or peptide: Oxytocin
Complex: Oxytocin receptor
Protein or peptide: Oxytocin receptor
Complex: miniGq
Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Guanine nucleotide-binding protein G(i) subunit alpha-2,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Complex: scFv16
Protein or peptide: scFv16
Ligand: MAGNESIUM ION
Keywords
HORMONE / GPCR COMPLEX / TRANSMEMBRANE RECEPTOR / OXYTOCIN RECEPTOR / OTR / OT / OXTR / G PROTEIN / OXYTOCIN / VASOTOCIN / MEMBRANE PROTEIN / MEMBRANE PROTEIN-NEUROPEPTIDE complex
Function / homology
Function and homology information
oxytocin receptor activity / positive regulation of hindgut contraction / maternal aggressive behavior / response to anoxia / oxytocin receptor binding / neurohypophyseal hormone activity / V1A vasopressin receptor binding / Vasopressin-like receptors / regulation of systemic arterial blood pressure by vasopressin / positive regulation of penile erection ...oxytocin receptor activity / positive regulation of hindgut contraction / maternal aggressive behavior / response to anoxia / oxytocin receptor binding / neurohypophyseal hormone activity / V1A vasopressin receptor binding / Vasopressin-like receptors / regulation of systemic arterial blood pressure by vasopressin / positive regulation of penile erection / vasopressin receptor activity / positive regulation of uterine smooth muscle contraction / maternal process involved in parturition / positive regulation of norepinephrine secretion / sperm ejaculation / negative regulation of urine volume / telencephalon development / drinking behavior / response to sucrose / grooming behavior / positive regulation of prostaglandin secretion / response to ether / positive regulation of blood pressure / neuropeptide hormone activity / maternal behavior / positive regulation of ossification / positive regulation of female receptivity / digestive tract development / positive regulation of synapse assembly / response to food / male mating behavior / eating behavior / suckling behavior / neuronal dense core vesicle / social behavior / peptide hormone binding / microvillus / positive regulation of synaptic transmission / response to retinoic acid / response to electrical stimulus / response to glucocorticoid / cellular response to hormone stimulus / estrous cycle / response to cAMP / response to prostaglandin E / negative regulation of blood pressure / ionotropic glutamate receptor binding / muscle contraction / positive regulation of vasoconstriction / lactation / ERK1 and ERK2 cascade / response to amphetamine / positive regulation of synaptic transmission, glutamatergic / regulation of heart rate / response to cytokine / secretory granule / response to progesterone / response to activity / positive regulation of synaptic transmission, GABAergic / female pregnancy / adherens junction / response to cocaine / terminal bouton / response to peptide hormone / memory / Olfactory Signaling Pathway / 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 / 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 / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle Similarity search - Function
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
T32-GM089626
United States
Citation
Journal: Nat Struct Mol Biol / Year: 2022 Title: The oxytocin signaling complex reveals a molecular switch for cation dependence. Authors: Justin G Meyerowitz / Michael J Robertson / Ximena Barros-Álvarez / Ouliana Panova / Robert M Nwokonko / Yang Gao / Georgios Skiniotis / Abstract: Oxytocin (OT) and vasopressin (AVP) are conserved peptide signaling hormones that are critical for diverse processes including osmotic homeostasis, reproduction, lactation and social interaction. OT ...Oxytocin (OT) and vasopressin (AVP) are conserved peptide signaling hormones that are critical for diverse processes including osmotic homeostasis, reproduction, lactation and social interaction. OT acts through the oxytocin receptor (OTR), a magnesium-dependent G protein-coupled receptor that is a therapeutic target for treatment of postpartum hemorrhage, dysfunctional labor and autism. However, the molecular mechanisms that underlie OTR activation by OT and the dependence on magnesium remain unknown. Here we present the wild-type active-state structure of human OTR bound to OT and miniG determined by cryo-EM. The structure reveals a unique activation mechanism adopted by OTR involving both the formation of a Mg coordination complex between OT and the receptor, and disruption of transmembrane helix 7 (TM7) by OT. Our functional assays demonstrate the role of TM7 disruption and provide the mechanism of full agonism by OT and partial agonism by OT analogs. Furthermore, we find that the identity of a single cation-coordinating residue across vasopressin family receptors determines whether the receptor is cation-dependent. Collectively, these results demonstrate how the Mg-dependent OTR is activated by OT, provide essential information for structure-based drug discovery efforts and shed light on the molecular determinants of cation dependence of vasopressin family receptors throughout the animal kingdom.
History
Deposition
Aug 24, 2021
-
Header (metadata) release
Mar 9, 2022
-
Map release
Mar 9, 2022
-
Update
Oct 9, 2024
-
Current status
Oct 9, 2024
Processing site: RCSB / Status: Released
-
Structure visualization
Movie
Surface view with section colored by density value
EMPIAR-10936 (Title: Oxytocin receptor (OTR) bound to oxytocin in complex with a heterotrimeric Gq protein Data size: 4.1 TB Data #1: Unaligned multi-frame micrographs of the oxytocin-oxytocin receptor-miniGq complex [micrographs - multiframe])
Entire : Oxytocin receptor signaling complex with oxytocin and miniGq and ...
Entire
Name: Oxytocin receptor signaling complex with oxytocin and miniGq and an scFv
Components
Complex: Oxytocin receptor signaling complex with oxytocin and miniGq and an scFv
Complex: Oxytocin
Protein or peptide: Oxytocin
Complex: Oxytocin receptor
Protein or peptide: Oxytocin receptor
Complex: miniGq
Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Guanine nucleotide-binding protein G(i) subunit alpha-2,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Complex: scFv16
Protein or peptide: scFv16
Ligand: MAGNESIUM ION
+
Supramolecule #1: Oxytocin receptor signaling complex with oxytocin and miniGq and ...
Supramolecule
Name: Oxytocin receptor signaling complex with oxytocin and miniGq and an scFv type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Name: MAGNESIUM ION / type: ligand / ID: 6 / Number of copies: 1 / Formula: MG
Molecular weight
Theoretical: 24.305 Da
-
Experimental details
-
Structure determination
Method
cryo EM
Processing
single particle reconstruction
Aggregation state
particle
-
Sample preparation
Buffer
pH: 7.4
Grid
Model: UltrAuFoil R1.2/1.3 / Material: GOLD / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE
Vitrification
Cryogen name: ETHANE
-
Electron microscopy
Microscope
TFS KRIOS
Image recording
Film or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 40 / Average exposure time: 2.497 sec. / Average electron dose: 54.8 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
In the structure databanks used in Yorodumi, some data are registered as the other names, "COVID-19 virus" and "2019-nCoV". Here are the details of the virus and the list of structure data.
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)
EMDB accession codes are about to change! (news from PDBe EMDB page)
The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
The EM Navigator/Yorodumi systems omit the EMD- prefix.
Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator
Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.
Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi