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- PDB-8xiq: Structure of L796778-SSTR3 G protein complex -

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Basic information

Entry
Database: PDB / ID: 8xiq
TitleStructure of L796778-SSTR3 G protein complex
Components
  • (Guanine nucleotide-binding protein ...) x 2
  • G-alpha i
  • NIT-FC0-NLE-A1D5B
  • Somatostatin receptor type 3
  • nanobody Nb35
KeywordsMEMBRANE PROTEIN / GPCR / SSTR3 / L796778
Function / homology
Function and homology information


somatostatin receptor activity / hormone-mediated apoptotic signaling pathway / BBSome-mediated cargo-targeting to cilium / neuropeptide binding / non-motile cilium / cellular response to glucocorticoid stimulus / ciliary membrane / response to starvation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway ...somatostatin receptor activity / hormone-mediated apoptotic signaling pathway / BBSome-mediated cargo-targeting to cilium / neuropeptide binding / non-motile cilium / cellular response to glucocorticoid stimulus / ciliary membrane / response to starvation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway / forebrain development / Peptide ligand-binding receptors / cerebellum development / cellular response to estradiol stimulus / G protein-coupled receptor activity / 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 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 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / cilium / 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 / 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 / cell-cell signaling / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / spermatogenesis / G alpha (q) signalling events / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / neuron projection / G protein-coupled receptor signaling pathway / negative regulation of cell population proliferation / lysosomal membrane / signaling receptor binding / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol
Similarity search - Function
Somatostatin receptor 3 / Somatostatin receptor family / Serpentine type 7TM GPCR chemoreceptor Srsx / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs ...Somatostatin receptor 3 / Somatostatin receptor family / Serpentine type 7TM GPCR chemoreceptor Srsx / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / 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. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Somatostatin receptor type 3 / 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
Similarity search - Component
Biological speciesHomo sapiens (human)
Lama glama (llama)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.71 Å
AuthorsWang, Y. / Xu, Y. / Xu, H.E. / Zhuang, Y.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)81902085 China
CitationJournal: To Be Published
Title: Selective ligand recognition and activation of somatostatin receptors SSTR1 and SSTR3
Authors: Wang, Y. / Xu, Y. / He, X. / Fan, W. / Wu, K. / Hu, W. / Cheng, X. / Sun, S. / Xu, H.E. / Zhuang, Y.
History
DepositionDec 19, 2023Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Jul 3, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Somatostatin receptor type 3
B: G-alpha i
C: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
D: nanobody Nb35
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
F: NIT-FC0-NLE-A1D5B


Theoretical massNumber of molelcules
Total (without water)147,6496
Polymers147,6496
Non-polymers00
Water19811
1


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

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein Somatostatin receptor type 3 / SS-3-R / SS3-R / SS3R / SST3 / SSR-28


Mass: 40553.281 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SSTR3 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P32745
#2: Protein G-alpha i


Mass: 41641.207 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Trichoplusia ni (cabbage looper)

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Guanine nucleotide-binding protein ... , 2 types, 2 molecules CG

#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 40082.863 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P62873
#5: 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: Trichoplusia ni (cabbage looper) / References: UniProt: P59768

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Antibody / Protein/peptide / Non-polymers , 3 types, 13 molecules DF

#4: Antibody nanobody Nb35


Mass: 16926.076 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lama glama (llama) / Production host: Escherichia coli (E. coli)
#6: Protein/peptide NIT-FC0-NLE-A1D5B


Mass: 584.664 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 11 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY

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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: Structure of L796778-SSTR3 G protein complex / Type: COMPLEX / Entity ID: #1-#5 / Source: RECOMBINANT
Molecular weightValue: 0.16 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

MicroscopyModel: FEI TITAN
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 5000 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 2.71 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 425379 / Symmetry type: POINT

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