7XKF image
Entry Detail
PDB ID:
7XKF
EMDB ID:
Title:
Cryo-EM structure of DHEA-ADGRG2-BT-Gs complex at lower state
Biological Source:
PDB Version:
Deposition Date:
2022-04-19
Release Date:
2022-08-10
Method Details:
Experimental Method:
Resolution:
2.40 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Mutations:S54N, G226A, E268A, N271K, K274D, R280K, T284D, I285T
Chain IDs:A
Chain Length:394
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Chain IDs:B
Chain Length:358
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Chain IDs:C (auth: G)
Chain Length:58
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:NB35
Chain IDs:D (auth: N)
Chain Length:128
Number of Molecules:1
Biological Source:Camelus bactrianus
Polymer Type:polypeptide(L)
Description:Adhesion G-protein coupled receptor G2
Chain IDs:E (auth: R)
Chain Length:303
Number of Molecules:1
Biological Source:Mus musculus
Ligand Molecules
Primary Citation
Structures of the ADGRG2-G s complex in apo and ligand-bound forms.
Nat.Chem.Biol. 18 1196 1203 (2022)
PMID: 35982227 DOI: 10.1038/s41589-022-01084-6

Abstact

Adhesion G protein-coupled receptors are elusive in terms of their structural information and ligands. Here, we solved the cryogenic-electron microscopy (cryo-EM) structure of apo-ADGRG2, an essential membrane receptor for maintaining male fertility, in complex with a Gs trimer. Whereas the formations of two kinks were determinants of the active state, identification of a potential ligand-binding pocket in ADGRG2 facilitated the screening and identification of dehydroepiandrosterone (DHEA), dehydroepiandrosterone sulfate and deoxycorticosterone as potential ligands of ADGRG2. The cryo-EM structures of DHEA-ADGRG2-Gs provided interaction details for DHEA within the seven transmembrane domains of ADGRG2. Collectively, our data provide a structural basis for the activation and signaling of ADGRG2, as well as characterization of steroid hormones as ADGRG2 ligands, which might be used as useful tools for further functional studies of the orphan ADGRG2.

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Primary Citation of related structures