3MHP

FNR-recruitment to the thylakoid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Ferredoxin:NADPH oxidoreductase is recruited to thylakoids by binding to a polyproline type II helix in a pH-dependent manner.

Alte, F.Stengel, A.Benz, J.P.Petersen, E.Soll, J.Groll, M.Bolter, B.

(2010) Proc.Natl.Acad.Sci.USA 107: 19260-19265

  • DOI: 10.1073/pnas.1009124107

  • PubMed Abstract: 
  • Ferredoxin:NADPH oxidoreductase (FNR) is a key enzyme of photosynthetic electron transport required for generation of reduction equivalents. Recently, two proteins were found to be involved in membrane-anchoring of FNR by specific interaction via a c ...

    Ferredoxin:NADPH oxidoreductase (FNR) is a key enzyme of photosynthetic electron transport required for generation of reduction equivalents. Recently, two proteins were found to be involved in membrane-anchoring of FNR by specific interaction via a conserved Ser/Pro-rich motif: Tic62 and Trol. Our crystallographic study reveals that the FNR-binding motif, which forms a polyproline type II helix, induces self-assembly of two FNR monomers into a back-to-back dimer. Because binding occurs opposite to the FNR active sites, its activity is not affected by the interaction. Surface plasmon resonance analyses disclose a high affinity of FNR to the binding motif, which is strongly increased under acidic conditions. The pH of the chloroplast stroma changes dependent on the light conditions from neutral to slightly acidic in complete darkness or to alkaline at saturating light conditions. Recruiting of FNR to the thylakoids could therefore represent a regulatory mechanism to adapt FNR availability/activity to photosynthetic electron flow.


    Organizational Affiliation

    Munich Center for Integrated Protein Science, Ludwig-Maximilians-Universit├Ąt, 81377 Munich, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ferredoxin--NADP reductase, leaf isozyme, chloroplastic
A, B
296Pisum sativumMutation(s): 0 
Gene Names: PETH
EC: 1.18.1.2
Find proteins for P10933 (Pisum sativum)
Go to UniProtKB:  P10933
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TIC62_peptide
C
26Pisum sativumMutation(s): 0 
Gene Names: TIC62
Find proteins for Q8SKU2 (Pisum sativum)
Go to UniProtKB:  Q8SKU2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
A, B
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.181 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 47.463α = 106.56
b = 48.824β = 97.01
c = 71.349γ = 91.77
Software Package:
Software NamePurpose
PROTEUM PLUSdata collection
PROTEUM PLUSdata scaling
PHASERphasing
CNSrefinement
PROTEUM PLUSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-10-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance