8VHV | pdb_00008vhv

Transmembrane AMPA Receptor Regulatory Protein Subunit Gamma 2

• PDB DOI: https://doi.org/10.2210/pdb8VHV/pdb
• EM Map EMD-43242: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Mus musculus
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  PDBTMMemProtMDmpstruc


• Deposited: 2024-01-02 Released: 2025-01-22 
• Deposition Author(s): Hale, W.D., Montano Romero, A., Huganir, R.L., Twomey, E.C.
• Funding Organization(s): Other private, National Institutes of Health/National Institute of Mental Health (NIH/NIMH), National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.30 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of transmembrane AMPA receptor regulatory protein subunit gamma 2.

Hale, W.D., Romero, A.M., Koylass, N., Warrick, C.R., Qiu, Z., Huganir, R.L., Twomey, E.C.

(2025) Nat Commun 16: 671-671

• PubMed: 39809794 
• DOI: https://doi.org/10.1038/s41467-025-56027-1
• Primary Citation of Related Structures:  
  8VHV


• PubMed Abstract: 
  

  Transmembrane AMPA receptor regulatory proteins (TARPs) are claudin-like proteins that tightly regulate AMPA receptors (AMPARs) and are fundamental for excitatory neurotransmission. With cryo-electron microscopy (cryo-EM) we reconstruct the 36 kDa TARP subunit γ2 to 2.3 Å, which points to structural diversity among TARPs. Our data reveals critical motifs that distinguish TARPs from claudins and define how sequence variations within TARPs differentiate subfamilies and their regulation of AMPARs.

---

Organizational Affiliation: 
• Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA. [e-mail].
Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA. [e-mail].
Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA. [e-mail].
Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD, USA. [e-mail].
The Beckman Center for Cryo-EM at Johns Hopkins, Johns Hopkins University School of Medicine, Baltimore, MD, USA. [e-mail].
Diana Helis Henry Medical Research Foundation, New Orleans, LA, USA. [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 23.2 kDa 
• Atom Count: 1,335 
• Modeled Residue Count: 172 
• Deposited Residue Count: 210 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Voltage-dependent calcium channel gamma-2 subunit	A	210	Mus musculus	Mutation(s): 0  Gene Names: Cacng2, Stg Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for O88602 (Mus musculus) Explore O88602  Go to UniProtKB:  O88602
IMPC:  MGI:1316660

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.30 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-01-22 
Deposition Author(s): Hale, W.D., Montano Romero, A., Huganir, R.L., Twomey, E.C.

---

Funding Organization	Location	Grant Number
Other private		Kinship Foundation 22098168
Other private		Diana Helis Henry Medical Research Foundation 142548
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)	United States	MH112152
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)	United States	NS036715
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)	United States	MH132811

Revision History  

• Version 1.0: 2025-01-22
  Type: Initial release
  
• Version 1.1: 2025-01-29
  Changes: Data collection, Database references
• Version 1.2: 2025-05-21
  Changes: Data collection