4O93

Crystal structure of Thermus thermophilis transhydrogeanse domain II dimer

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.77 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Structural biology. Division of labor in transhydrogenase by alternating proton translocation and hydride transfer.

Leung, J.H., Schurig-Briccio, L.A., Yamaguchi, M., Moeller, A., Speir, J.A., Gennis, R.B., Stout, C.D.

(2015) Science 347: 178-181

  • DOI: 10.1126/science.1260451
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • NADPH/NADP(+) (the reduced form of NADP(+)/nicotinamide adenine dinucleotide phosphate) homeostasis is critical for countering oxidative stress in cells. Nicotinamide nucleotide transhydrogenase (TH), a membrane enzyme present in both bacteria and mi ...

    NADPH/NADP(+) (the reduced form of NADP(+)/nicotinamide adenine dinucleotide phosphate) homeostasis is critical for countering oxidative stress in cells. Nicotinamide nucleotide transhydrogenase (TH), a membrane enzyme present in both bacteria and mitochondria, couples the proton motive force to the generation of NADPH. We present the 2.8 Å crystal structure of the transmembrane proton channel domain of TH from Thermus thermophilus and the 6.9 Å crystal structure of the entire enzyme (holo-TH). The membrane domain crystallized as a symmetric dimer, with each protomer containing a putative proton channel. The holo-TH is a highly asymmetric dimer with the NADP(H)-binding domain (dIII) in two different orientations. This unusual arrangement suggests a catalytic mechanism in which the two copies of dIII alternatively function in proton translocation and hydride transfer.

    Organizational Affiliation: 

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NAD(P) transhydrogenase subunit alpha 2
A, C
94Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039)Mutation(s): 0 
EC: 1.6.1.2
Membrane protein
mpstruc		Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group: 
Transhydrogenases		Protein: 
Nicotinamide nucleotide transhydrogenase (TH) proton channel domain, pH 8.5
Find proteins for Q72GR9 (Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039))
Go to UniProtKB:  Q72GR9
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
NAD(P) transhydrogenase subunit beta
B, D
270Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039)Mutation(s): 0 
EC: 7.1.1.1
Membrane protein
mpstruc		Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group: 
Transhydrogenases		Protein: 
Nicotinamide nucleotide transhydrogenase (TH) proton channel domain, pH 8.5
Find proteins for Q72GS0 (Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039))
Go to UniProtKB:  Q72GS0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG
Download SDF File 
Download CCD File 
A, C
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.77 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.204 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 125.408α = 90.00
b = 86.920β = 94.55
c = 98.978γ = 90.00
Software Package:
Software NamePurpose
SHELXSphasing
Blu-Icedata collection
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-31
    Type: Initial release
  • Version 1.1: 2015-01-28
    Type: Database references