3AZC

Crystal structure of the soluble part of cytochrome b6f complex iron-sulfur subunit from Thermosynechococcus elongatus BP-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of a thermophilic cyanobacterial b(6)f-type Rieske protein

Veit, S.Takeda, K.Tsunoyama, Y.Rexroth, D.Rogner, M.Miki, K.

(2012) Acta Crystallogr.,Sect.D 68: 1400-1408

  • DOI: 10.1107/S0907444912034129

  • PubMed Abstract: 
  • The `Rieske protein' PetC is one of the key subunits of the cytochrome b(6)f complex. Its Rieske-type [2Fe-2S] cluster participates in the photosynthetic electron-transport chain. Overexpression and careful structure analysis at 2.0 Å resolution of t ...

    The `Rieske protein' PetC is one of the key subunits of the cytochrome b(6)f complex. Its Rieske-type [2Fe-2S] cluster participates in the photosynthetic electron-transport chain. Overexpression and careful structure analysis at 2.0 Å resolution of the extrinsic soluble domain of PetC from the thermophilic cyanobacterium Thermosynechococcus elongatus BP-1 enabled in-depth spectroscopic and structural characterization and suggested novel structural features. In particular, both the protein structure and the positions of the internal water molecules unexpectedly showed a higher similarity to eukaryotic PetCs than to other prokaryotic PetCs. The structure also revealed a deep pocket on the PetC surface which is oriented towards the membrane surface in the whole complex. Its surface properties suggest a binding site for a hydrophobic compound and the complete conservation of the pocket-forming residues in all known PetC sequences indicates the functional importance of this pocket in the cytochrome b(6)f complex.


    Organizational Affiliation

    Plant Biochemistry, Ruhr University Bochum, 44780 Bochum, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cytochrome b6-f complex iron-sulfur subunit
A
133Thermosynechococcus elongatus (strain BP-1)Mutation(s): 0 
Gene Names: petC
EC: 7.1.1.6
Find proteins for P0C8N8 (Thermosynechococcus elongatus (strain BP-1))
Go to UniProtKB:  P0C8N8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FES
Query on FES

Download SDF File 
Download CCD File 
A
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.197 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 91.324α = 90.00
b = 91.324β = 90.00
c = 43.342γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
CNSrefinement
HKL-2000data reduction
BSSdata collection
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2012-10-03
    Type: Database references