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- PDB-9v0u: GPR133-Gain-miniG13 complex -

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Basic information

Entry
Database: PDB / ID: 9v0u
TitleGPR133-Gain-miniG13 complex
Components
  • Adhesion G-protein coupled receptor D1
  • Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
  • Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
  • Guanine nucleotide-binding protein subunit alpha-13,Isoform 2 of Guanine nucleotide-binding protein subunit alpha-13
KeywordsMEMBRANE PROTEIN / GPCR / G12/G13 / Complex / Stachel
Function / homology
Function and homology information


D5 dopamine receptor binding / regulation of skeletal muscle contraction / regulation of fibroblast migration / Rho-activating G protein-coupled receptor signaling pathway / regulation of small GTPase mediated signal transduction / NRAGE signals death through JNK / branching involved in blood vessel morphogenesis / CDC42 GTPase cycle / regulation of postsynapse assembly / Rho protein signal transduction ...D5 dopamine receptor binding / regulation of skeletal muscle contraction / regulation of fibroblast migration / Rho-activating G protein-coupled receptor signaling pathway / regulation of small GTPase mediated signal transduction / NRAGE signals death through JNK / branching involved in blood vessel morphogenesis / CDC42 GTPase cycle / regulation of postsynapse assembly / Rho protein signal transduction / RAC1 GTPase cycle / guanyl-nucleotide exchange factor activity / brush border membrane / G protein-coupled receptor activity / platelet activation / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / regulation of blood pressure / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / 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 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / 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 / melanosome / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / regulation of cell shape / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / G protein activity / GTPase binding / Ca2+ pathway / fibroblast proliferation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / in utero embryonic development / Ras protein signal transduction / cell differentiation / cell surface receptor signaling pathway / Extra-nuclear estrogen signaling / cell population proliferation / postsynapse / nuclear speck / G protein-coupled receptor signaling pathway / lysosomal membrane / focal adhesion / GTPase activity / synapse / GTP binding / protein-containing complex binding / signal transduction / extracellular exosome / nucleoplasm / metal ion binding / nucleus / membrane / plasma membrane / cytoplasm / cytosol
Similarity search - Function
G-protein alpha subunit, group 12/13 / Concanavalin A-like lectin/glucanases superfamily / Pentraxin-related / Pentraxin (PTX) domain profile. / GAIN domain superfamily / GPCR proteolysis site, GPS, motif / : / GPS motif / GAIN-B domain profile. / G-protein-coupled receptor proteolytic site domain ...G-protein alpha subunit, group 12/13 / Concanavalin A-like lectin/glucanases superfamily / Pentraxin-related / Pentraxin (PTX) domain profile. / GAIN domain superfamily / GPCR proteolysis site, GPS, motif / : / GPS motif / GAIN-B domain profile. / G-protein-coupled receptor proteolytic site domain / G-protein coupled receptors family 2 signature 2. / GPCR, family 2, secretin-like, conserved site / GPCR, family 2, secretin-like / 7 transmembrane receptor (Secretin family) / GPCR, family 2-like / G-protein coupled receptors family 2 profile 2. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / Concanavalin A-like lectin/glucanase domain superfamily / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein subunit alpha-13 / Adhesion G-protein coupled receptor D1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.51 Å
AuthorsXi, Y. / Pu, X. / Ping, Y.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32222038 China
CitationJournal: Biochem Biophys Res Commun / Year: 2025
Title: Cryo-EM structural elucidation and molecular mechanism of the GPR133-G13 signaling complex.
Authors: Xuanyu Pu / Yue-Tong Xi / Meng-Xin Wang / Daolai Zhang / Yu-Qi Ping / Peng Xiao / Jin-Peng Sun /
Abstract: GPR133 is an adhesion-class G protein-coupled receptor (GPCR) that has recently been de-orphanized. Its functions are complex and multifaceted. While GPR133 is primarily recognized for coupling with ...GPR133 is an adhesion-class G protein-coupled receptor (GPCR) that has recently been de-orphanized. Its functions are complex and multifaceted. While GPR133 is primarily recognized for coupling with the Gs subunit to mediate elevated intracellular cAMP levels, its potential engagement with alternative signaling pathways remains poorly characterized. In our experiments, we demonstrated that GPR133 exhibits constitutive self-activation via its Stachel sequence as an adhesion GPCR, enabling activation of downstream G13 signaling. We reconstituted the GPR133-GAIN-miniGα13 complex in vitro and resolved its cryo-electron microscopy structure at a resolution of 3.51 Å. Detailed structural comparisons between the GPR133-GAIN-miniGα13 complex and the previously resolved GPR133-CTF-Gs structure highlighted both conserved and different features. These findings provide critical insights into the signal transduction mechanisms of GPR133 and lay a foundation for targeted therapeutic strategies.
History
DepositionMay 19, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Jul 30, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
R: Adhesion G-protein coupled receptor D1
A: Guanine nucleotide-binding protein subunit alpha-13,Isoform 2 of Guanine nucleotide-binding protein subunit alpha-13
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
C: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1


Theoretical massNumber of molelcules
Total (without water)138,0404
Polymers138,0404
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Adhesion G-protein coupled receptor D1 / G-protein coupled receptor 133 / G-protein coupled receptor PGR25


Mass: 65688.828 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ADGRD1, GPR133, PGR25 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q6QNK2
#2: Protein Guanine nucleotide-binding protein subunit alpha-13,Isoform 2 of Guanine nucleotide-binding protein subunit alpha-13 / G alpha-13 / G-protein subunit alpha-13


Mass: 26705.596 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNA13 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q14344
#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7861.143 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P59768
#4: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 37784.301 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P62873
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: GPR133-Gain-miniG13-Gbeta1-Ggamma2 complex / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 3.51 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 45759 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 74.64 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00356327
ELECTRON MICROSCOPYf_angle_d0.65768652
ELECTRON MICROSCOPYf_chiral_restr0.0411063
ELECTRON MICROSCOPYf_plane_restr0.00321092
ELECTRON MICROSCOPYf_dihedral_angle_d12.77742017

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