4UC3

Translocator protein 18 kDa (TSPO) from Rhodobacter sphaeroides wild type


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Crystal structures of translocator protein (TSPO) and mutant mimic of a human polymorphism.

Li, F.Liu, J.Zheng, Y.Garavito, R.M.Ferguson-Miller, S.

(2015) Science 347: 555-558

  • DOI: 10.1126/science.1260590
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The 18-kilodalton translocator protein (TSPO), proposed to be a key player in cholesterol transport into mitochondria, is highly expressed in steroidogenic tissues, metastatic cancer, and inflammatory and neurological diseases such as Alzheimer's and ...

    The 18-kilodalton translocator protein (TSPO), proposed to be a key player in cholesterol transport into mitochondria, is highly expressed in steroidogenic tissues, metastatic cancer, and inflammatory and neurological diseases such as Alzheimer's and Parkinson's. TSPO ligands, including benzodiazepine drugs, are implicated in regulating apoptosis and are extensively used in diagnostic imaging. We report crystal structures (at 1.8, 2.4, and 2.5 angstrom resolution) of TSPO from Rhodobacter sphaeroides and a mutant that mimics the human Ala(147)→Thr(147) polymorphism associated with psychiatric disorders and reduced pregnenolone production. Crystals obtained in the lipidic cubic phase reveal the binding site of an endogenous porphyrin ligand and conformational effects of the mutation. The three crystal structures show the same tightly interacting dimer and provide insights into the controversial physiological role of TSPO and how the mutation affects cholesterol binding.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRANSLOCATOR PROTEIN TSPO
A, B
155Rhodobacter sphaeroidesMutation(s): 0 
Gene Names: tspO (crtK)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Translocator Protein (18 kDA) TSPO
Protein: 
Translocator protein (TSPO), A139T SeMet1 C121
Find proteins for Q9RFC8 (Rhodobacter sphaeroides)
Go to UniProtKB:  Q9RFC8
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OLC
Query on OLC

Download SDF File 
Download CCD File 
A, B
(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
1-Oleoyl-R-glycerol
C21 H40 O4
RZRNAYUHWVFMIP-GDCKJWNLSA-N
 Ligand Interaction
YZY
Query on YZY

Download SDF File 
Download CCD File 
A
(2S)-2-(hexadecanoyloxy)-3-hydroxypropyl (9Z)-octadec-9-enoate
C37 H70 O5
DOZKMFVMCATMEH-OZKTZCCCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.218 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 49.100α = 90.00
b = 61.706β = 112.53
c = 52.676γ = 90.00
Software Package:
Software NamePurpose
Blu-Icedata collection
XDSdata scaling
Aimlessdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesNIH GM26916

Revision History 

  • Version 1.0: 2015-02-04
    Type: Initial release
  • Version 1.1: 2015-02-11
    Type: Database references
  • Version 1.2: 2015-06-03
    Type: Structure summary
  • Version 1.3: 2017-09-13
    Type: Author supporting evidence, Database references, Derived calculations, Source and taxonomy
  • Version 1.4: 2017-11-22
    Type: Refinement description