22JX | pdb_000022jx

Cryo-EM structure of the mGlu5-beta-arrestin 1 complex

• PDB DOI: https://doi.org/10.2210/pdb22JX/pdb
• EM Map EMD-68388: 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: 3.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation

Currently 22JX 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: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 8-mer - A2B2C2D2 Pseudo Symmetry: Cyclic - C2  (Explore in 3D)
Pseudo Stoichiometry: Hetero 8-mer - A4B2C2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 458.94 kDa 
• Atom Count: 20,264 
• Modeled Residue Count: 2,671 
• Deposited Residue Count: 4,094 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Metabotropic glutamate receptor 5	A, B	892	Homo sapiens	Mutation(s): 0  Gene Names: GRM5, GPRC1E, MGLUR5
UniProt & NIH Common Fund Data Resources
Find proteins for P41594 (Homo sapiens) Explore P41594  Go to UniProtKB:  P41594
PHAROS:  P41594 GTEx:  ENSG00000168959
Glycosylation
Glycosylation Sites: 1		Go to GlyGen: P41594-1

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
beta-arrestin 1	C, D, F, H	522	Homo sapiens	Mutation(s): 0  Gene Names: ARRB1

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

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	J [auth A], L [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
GLU	I [auth A], K [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: 3.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC

Structure Validation

Currently 22JX 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