ISDA

Entry Detail

PDB ID:

2MGY

Keywords:

MEMBRANE PROTEIN

Title:

Solution structure of the mitochondrial translocator protein (TSPO) in complex with its high-affinity ligand PK11195

Biological Source:

Source Organism:

Mus musculus

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2013-11-11

Release Date:

2014-04-02

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

105

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Translocator protein
Chain IDs:A
Chain Length:169
Number of Molecules:1
Biological Source:Mus musculus

UniProt ID:P50637 Pfam ID:PF03073

Ligand Molecules

PKA

Primary Citation

Structure of the mitochondrial translocator protein in complex with a diagnostic ligand.

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

Science 343 1363 1366 (2014)

PMID: 24653034 DOI: 10.1126/science.1248725

Abstact

The 18-kilodalton translocator protein TSPO is found in mitochondrial membranes and mediates the import of cholesterol and porphyrins into mitochondria. In line with the role of TSPO in mitochondrial function, TSPO ligands are used for a variety of diagnostic and therapeutic applications in animals and humans. We present the three-dimensional high-resolution structure of mammalian TSPO reconstituted in detergent micelles in complex with its high-affinity ligand PK11195. The TSPO-PK11195 structure is described by a tight bundle of five transmembrane α helices that form a hydrophobic pocket accepting PK11195. Ligand-induced stabilization of the structure of TSPO suggests a molecular mechanism for the stimulation of cholesterol transport into mitochondria.

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Primary Citation of related structures