22JZ | pdb_000022jz

Cryo-EM structure of the mGlu7-beta-arrestin 1 complex

• PDB DOI: https://doi.org/10.2210/pdb22JZ/pdb
• EM Map EMD-68390: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN/IMMUNE SYSTEM
• Organism(s): Homo sapiens, Mus musculus
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2026-01-14 Released: 2026-09-09 
• Deposition Author(s): Lin, S., Zhang, C., Wei, J., Chen, K., Feng, Y., Wang, Z., Chu, X., Yi, C., Ma, L., Han, S., Zhao, Q., Wu, B.
• Funding Organization(s): National Science Foundation (NSF, China)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation

Currently 22JZ does not have a validation slider image.

Literature

Subtype-dependent arrestin engagement of the metabotropic glutamate receptors

Lin, S., Zhang, C., Wei, J., Yu, J., Li, S., Xu, J., Su, J., Chen, K., Feng, Y., Wang, Z., Chu, X., Yi, C., Ma, L., Han, S., Zhang, H., Shui, W., Zhao, Q., Wu, B.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A2B1C1D1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 5-mer - A2B2C1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 331.33 kDa 
• Atom Count: 15,886 
• Modeled Residue Count: 2,163 
• Deposited Residue Count: 2,939 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Isoform 4 of Metabotropic glutamate receptor 7	A, B	909	Homo sapiens	Mutation(s): 0  Gene Names: GRM7, GPRC1G, MGLUR7
UniProt & NIH Common Fund Data Resources
Find proteins for Q14831 (Homo sapiens) Go to UniProtKB:  Q14831
PHAROS:  Q14831 GTEx:  ENSG00000196277

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
beta-arrestin 1	C, E	505	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
scFv30	D	111	Mus musculus	Mutation(s): 0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CLR	G [auth A], H [auth A], I [auth A], K [auth B], L [auth B]	CHOLESTEROL C27 H46 O HVYWMOMLDIMFJA-DPAQBDIFSA-N
GLU	F [auth A], J [auth B]	GLUTAMIC ACID C5 H9 N O4 WHUUTDBJXJRKMK-VKHMYHEASA-N

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
SEP	A, B	L-PEPTIDE LINKING	C3 H8 N O6 P		SER
TPO	A, B	L-PEPTIDE LINKING	C4 H10 N O6 P		THR

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC
MODEL REFINEMENT	PHENIX

Structure Validation

Currently 22JZ does not have a validation slider image.

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-09-09 
Deposition Author(s): Lin, S., Zhang, C., Wei, J., Chen, K., Feng, Y., Wang, Z., Chu, X., Yi, C., Ma, L., Han, S., Zhao, Q., Wu, B.

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Funding Organization	Location	Grant Number
National Science Foundation (NSF, China)	China	32530052
National Science Foundation (NSF, China)	China	82121005

Revision History  

• Version 1.0: 2026-09-09
  Type: Initial release