5NYO

Crystal structure of an atypical poplar thioredoxin-like2.1 variant in dimeric form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural snapshots along the reaction mechanism of the atypical poplar thioredoxin-like2.1.

Chibani, K.Saul, F.Didierjean, C.Rouhier, N.Haouz, A.

(2018) FEBS Lett. 592: 1030-1041

  • DOI: 10.1002/1873-3468.13009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Plastidial thioredoxin (TRX)-like2.1 proteins are atypical thioredoxins possessing a WCRKC active site signature and using glutathione for recycling. To obtain structural information supporting the peculiar catalytic mechanisms and target proteins of ...

    Plastidial thioredoxin (TRX)-like2.1 proteins are atypical thioredoxins possessing a WCRKC active site signature and using glutathione for recycling. To obtain structural information supporting the peculiar catalytic mechanisms and target proteins of these TRXs, we solved the crystal structures of poplar TRX-like2.1 in oxidized and reduced states and of mutated variants. These structures share similar folding with TRXs exhibiting the canonical WCGPC signature. Moreover, the overall conformation is not altered by reduction of the catalytic disulfide bond or in a C45S/C67S variant that formed a disulfide-bridged dimer possibly mimicking reaction intermediates with target proteins. Modelling of the interaction of TRX-like2.1 with both NADPH- and ferredoxin-thioredoxin reductases indicates that the presence of Arg43 and Lys44 residues likely precludes reduction by the plastidial ferredoxin-thioredoxin reductase. This article is protected by copyright. All rights reserved.


    Organizational Affiliation

    UMR 1136, Université de Lorraine/INRA, Interactions Arbres-Microorganismes Faculté des sciences et technologies, 54500, Vandœuvre-lès-Nancy, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioredoxin-like protein 2.1
A, B
122Populus tremula x Populus tremuloidesMutation(s): 2 
Find proteins for I0BZV0 (Populus tremula x Populus tremuloides)
Go to UniProtKB:  I0BZV0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.207 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 62.547α = 90.00
b = 62.547β = 90.00
c = 138.415γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
XDSdata reduction
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
INRA-FORMAS programFrance--
Institut PasteurFrance--

Revision History 

  • Version 1.0: 2018-02-28
    Type: Initial release
  • Version 1.1: 2018-04-04
    Type: Data collection, Database references