8XIQ

Structure of L796778-SSTR3 G protein complex

• PDB DOI: https://doi.org/10.2210/pdb8XIQ/pdb
• EM Map EMD-38387: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens, Lama glama, synthetic construct
• Expression System: Trichoplusia ni, Escherichia coli
• Mutation(s): No 


• Deposited: 2023-12-19 Released: 2024-07-03 
• Deposition Author(s): Wang, Y., Xu, Y., Xu, H.E., Zhuang, Y.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.71 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Selective ligand recognition and activation of somatostatin receptors SSTR1 and SSTR3

Wang, Y., Xu, Y., He, X., Fan, W., Wu, K., Hu, W., Cheng, X., Sun, S., Xu, H.E., Zhuang, Y.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A1B1C1D1E1F1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 147.65 kDa 
• Atom Count: 8,169 
• Modelled Residue Count: 1,044 
• Deposited Residue Count: 1,330 
• Unique protein chains: 6

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Somatostatin receptor type 3	A	369	Homo sapiens	Mutation(s): 0  Gene Names: SSTR3
UniProt & NIH Common Fund Data Resources
Find proteins for P32745 (Homo sapiens) Explore P32745  Go to UniProtKB:  P32745
PHAROS:  P32745 GTEx:  ENSG00000278195

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
G-alpha i	B	361	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	C	369	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873 GTEx:  ENSG00000078369

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
nanobody Nb35	D	156	Lama glama	Mutation(s): 0

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	E [auth G]	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768 GTEx:  ENSG00000186469

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
NIT-FC0-NLE-A1D5B	F	4	synthetic construct	Mutation(s): 0

Small Molecules

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
A1D5B	F	L-PEPTIDE LINKING	C7 H16 N2 O2		LYS
NLE	F	L-PEPTIDE LINKING	C6 H13 N O2		LEU

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.71 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-07-03 
Deposition Author(s): Wang, Y., Xu, Y., Xu, H.E., Zhuang, Y.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	81902085

Revision History  

• Version 1.0: 2024-07-03
  Type: Initial release