2N02

Solution structure of the A147T variant of the mitochondrial translocator protein (tspo) in complex with pk11195

• PDB DOI: https://doi.org/10.2210/pdb2N02/pdb
• BMRB: 25513

• Classification: MEMBRANE PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): Yes 
• Membrane Protein: Yes  OPMPDBTMMemProtMD


• Deposited: 2015-03-04 Released: 2015-06-10 
• Deposition Author(s): Jaremko, M., Jaremko, L., Giller, K., Becker, S., Zweckstetter, M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 105 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Structural Integrity of the A147T Polymorph of Mammalian TSPO.

Jaremko, M., Jaremko, M., Giller, K., Becker, S., Zweckstetter, M.

(2015) Chembiochem 16: 1483-1489

• PubMed: 25974690 
• DOI: https://doi.org/10.1002/cbic.201500217
• Primary Citation of Related Structures:  
  2N02


• PubMed Abstract: 
  

  Ligands of the transmembrane protein TSPO are used for imaging of brain inflammation, but a common polymorphism in TSPO complicates their application to humans. Here we determined the three-dimensional structure and side-chain dynamics of the A147T polymorph of mammalian TSPO in complex with the first-generation ligand PK11195. We show that A147T TSPO is able to retain the same structural and dynamic profile as the wild-type protein and thus binds PK11195 with comparable affinity. Our study is important for the design of more potent diagnostic and therapeutic ligands of TSPO.

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Organizational Affiliation: 

Department for NMR-Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen (Germany).

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 19.18 kDa 
• Atom Count: 1,363 
• Modelled Residue Count: 169 
• Deposited Residue Count: 169 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Translocator protein	A	169	Mus musculus	Mutation(s): 1  Gene Names: Bzrp, Tspo Membrane Entity: Yes
UniProt
Find proteins for P50637 (Mus musculus) Explore P50637  Go to UniProtKB:  P50637

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PKA	B [auth A]	N-[(2R)-butan-2-yl]-1-(2-chlorophenyl)-N-methylisoquinoline-3-carboxamide C21 H21 Cl N2 O RAVIZVQZGXBOQO-CQSZACIVSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
PKA	BindingDB:  2N02	Ki: min: 0.31, max: 28.8 (nM) from 18 assay(s)
		Kd: min: 0.6, max: 2 (nM) from 2 assay(s)
		IC50: min: 1.3, max: 12 (nM) from 14 assay(s)

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 105 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-06-10 
Deposition Author(s): Jaremko, M., Jaremko, L., Giller, K., Becker, S., Zweckstetter, M.

Revision History  

• Version 1.0: 2015-06-10
  Type: Initial release
  
• Version 1.1: 2015-07-15
  Changes: Database references
• Version 1.2: 2018-01-31
  Changes: Database references
• Version 1.3: 2023-06-14
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-05-15
  Changes: Data collection, Database references