Caulobacter crescentus Trx1

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.192 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


An essential thioredoxin is involved in the control of the cell cycle in the bacterium

Goemans, C.V.Beaufay, F.Wahni, K.Van Molle, I.Messens, J.Collet, J.F.

(2018) J Biol Chem 293: 3839-3848

  • DOI: https://doi.org/10.1074/jbc.RA117.001042
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Thioredoxins (Trxs) are antioxidant proteins that are conserved among all species. These proteins have been extensively studied and perform reducing reactions on a broad range of substrates. Here, we identified Caulobacter crescentus Trx1 (CCNA_03653; Cc Trx1) as an oxidoreductase that is involved in the cell cycle progression of this model bacterium and is required to sustain life. Intriguingly, the abundance of Cc Trx1 varies throughout the C. crescentus cell cycle: although the expression of Cc Trx1 is induced in stalked cells, right before DNA replication initiation, Cc Trx1 is actively degraded by the ClpXP protease in predivisional cells. Importantly, we demonstrated that regulation of the abundance of Cc Trx1 is crucial for cell growth and survival as modulating Cc Trx1 levels leads to cell death. Finally, we also report a comprehensive biochemical and structural characterization of this unique and essential Trx. The requirement to precisely control the abundance of Cc Trx1 for cell survival underlines the importance of redox control for optimal cell cycle progression in C. crescentus .

  • Organizational Affiliation

    From WELBIO, Avenue Hippocrate 75, 1200 Brussels, Belgium, camille.goemans@uclouvain.be.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Thioredoxin 1
A, B, C
118Caulobacter vibrioides NA1000Mutation(s): 0 
Find proteins for A0A0H3CDN9 (Caulobacter vibrioides (strain NA1000 / CB15N))
Explore A0A0H3CDN9 
Go to UniProtKB:  A0A0H3CDN9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0H3CDN9
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.192 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.1α = 90
b = 85.1β = 90
c = 105.38γ = 120
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
VIB Marie Curie COFUNDBelgium--
Hercules foundationBelgiumHERC16

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-31
    Type: Initial release
  • Version 1.1: 2018-02-07
    Changes: Database references
  • Version 1.2: 2018-03-21
    Changes: Database references
  • Version 1.3: 2024-01-17
    Changes: Data collection, Database references, Refinement description