6I1C

Crystal structure of Chlamydomonas reinhardtii thioredoxin f2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of Chloroplastic Thioredoxin f2 fromChlamydomonas reinhardtiiReveals Distinct Surface Properties.

Lemaire, S.D.Tedesco, D.Crozet, P.Michelet, L.Fermani, S.Zaffagnini, M.Henri, J.

(2018) Antioxidants (Basel) 7

  • DOI: 10.3390/antiox7120171
  • Primary Citation of Related Structures:  
    6I19, 6I1C

  • PubMed Abstract: 
  • Protein disulfide reduction by thioredoxins (TRXs) controls the conformation of enzyme active sites and their multimeric complex formation. TRXs are small oxidoreductases that are broadly conserved in all living organisms. In photosynthetic eukaryotes, TRXs form a large multigenic family, and they have been classified in different types: f, m, x, y, and z types are chloroplastic, while o and h types are located in mitochondria and cytosol ...

    Protein disulfide reduction by thioredoxins (TRXs) controls the conformation of enzyme active sites and their multimeric complex formation. TRXs are small oxidoreductases that are broadly conserved in all living organisms. In photosynthetic eukaryotes, TRXs form a large multigenic family, and they have been classified in different types: f, m, x, y, and z types are chloroplastic, while o and h types are located in mitochondria and cytosol. In the model unicellular alga Chlamydomonas reinhardtii , the TRX family contains seven types, with f- and h-types represented by two isozymes. Type-f TRXs interact specifically with targets in the chloroplast, controlling photosynthetic carbon fixation by the Calvin⁻Benson cycle. We solved the crystal structures of TRX f2 and TRX h1 from C. reinhardtii . The systematic comparison of their atomic features revealed a specific conserved electropositive crown around the active site of TRX f, complementary to the electronegative surface of their targets. We postulate that this surface provides specificity to each type of TRX.


    Organizational Affiliation

    Laboratoire de Biologie Moléculaire et Cellulaire des Eucaryotes, Institut de Biologie Physico-Chimique, Unité Mixte de Recherche 8226 CNRS Sorbonne Université, 13 rue Pierre et Marie Curie, 75005 Paris, France. julien.henri@sorbonne-universite.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
thioredoxin f2A, B, C125Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: CHLRE_05g243050v5
UniProt
Find proteins for A0A2K3DSC9 (Chlamydomonas reinhardtii)
Explore A0A2K3DSC9 
Go to UniProtKB:  A0A2K3DSC9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A2K3DSC9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.383α = 90
b = 97.475β = 90
c = 139.545γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFrance17-CE05-0001
French National Research AgencyFranceANR-LABX-011
French National Research AgencyFranceANR-11-EQPX-0008

Revision History  (Full details and data files)

  • Version 1.0: 2018-12-05
    Type: Initial release
  • Version 1.1: 2019-10-02
    Changes: Data collection, Derived calculations