Crystal structure of deoxyribose-phosphate aldolase from Colwellia psychrerythraea (tetragonal form)

Experimental Data Snapshot

  • Resolution: 2.11 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.163 

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Trading off stability against activity in extremophilic aldolases.

Dick, M.Weiergraber, O.H.Classen, T.Bisterfeld, C.Bramski, J.Gohlke, H.Pietruszka, J.

(2016) Sci Rep 6: 17908-17908

  • DOI: https://doi.org/10.1038/srep17908
  • Primary Citation of Related Structures:  
    5C2X, 5C5Y, 5C6M

  • PubMed Abstract: 

    Understanding enzyme stability and activity in extremophilic organisms is of great biotechnological interest, but many questions are still unsolved. Using 2-deoxy-D-ribose-5-phosphate aldolase (DERA) as model enzyme, we have evaluated structural and functional characteristics of different orthologs from psychrophilic, mesophilic and hyperthermophilic organisms. We present the first crystal structures of psychrophilic DERAs, revealing a dimeric organization resembling their mesophilic but not their thermophilic counterparts. Conversion into monomeric proteins showed that the native dimer interface contributes to stability only in the hyperthermophilic enzymes. Nevertheless, introduction of a disulfide bridge in the interface of a psychrophilic DERA did confer increased thermostability, suggesting a strategy for rational design of more durable enzyme variants. Constraint network analysis revealed particularly sparse interactions between the substrate pocket and its surrounding α-helices in psychrophilic DERAs, which indicates that a more flexible active center underlies their high turnover numbers.

  • Organizational Affiliation

    Institute of Complex Systems ICS-6: Structural Biochemistry, Forschungszentrum Jülich GmbH, Jülich, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Deoxyribose-phosphate aldolase
A, B
263Colwellia psychrerythraeaMutation(s): 0 
Gene Names: deoCCPS_1972
Find proteins for Q483R4 (Colwellia psychrerythraea (strain 34H / ATCC BAA-681))
Explore Q483R4 
Go to UniProtKB:  Q483R4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ483R4
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.11 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.163 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.76α = 90
b = 103.76β = 90
c = 112.98γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-03
    Type: Initial release
  • Version 2.0: 2024-01-10
    Changes: Atomic model, Data collection, Database references, Refinement description