Structure of PDI-related Chaperone, Wind mutant-Y53S

Experimental Data Snapshot

  • Resolution: 1.75 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 

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Structural Elucidation of the Pdi-Related Chaperone Wind with the Help of Mutants.

Sevvana, M.Biadene, M.Ma, Q.Guo, C.Soling, H.-D.Sheldrick, G.M.Ferrari, D.M.

(2006) Acta Crystallogr D Biol Crystallogr 62: 589

  • DOI: https://doi.org/10.1107/S0907444906010456
  • Primary Citation of Related Structures:  
    2C0E, 2C0F, 2C0G, 2C1Y

  • PubMed Abstract: 

    The structures of the PDI-related protein Wind (with a C-terminal His(6) tag) and the mutants Y53S, Y53F and Y55K have been determined and compared with the wild-type structure with the His(6) tag at the N-terminus. All five structures show the same mode of dimerization, showing that this was not an artefact introduced by the nearby N-terminal His(6) tag and suggesting that this dimer may also be the biologically active form. Although the mutants Y53S and Y55K completely abrogate transport of the protein Pipe (which appears to be the primary function of Wind in the cell), only subtle differences can be seen in the putative Pipe-binding region. The Pipe binding in the active forms appears to involve hydrophobic interactions between aromatic systems, whereas the inactive mutants may be able to bind more strongly with the help of hydrogen bonds, which could disturb the delicate equilibrium required for effective Pipe transport.

  • Organizational Affiliation

    Lehrstuhl für Strukturchemie, Georg-August Universität, Tammanstrasse 4, D-37077 Göttingen, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
248Drosophila melanogasterMutation(s): 1 
Find proteins for O44342 (Drosophila melanogaster)
Explore O44342 
Go to UniProtKB:  O44342
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO44342
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.75 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.222 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.476α = 90
b = 50.557β = 112.06
c = 98.9γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-08-29
    Type: Initial release
  • Version 1.1: 2014-10-22
    Changes: Database references, Derived calculations, Other, Structure summary, Version format compliance
  • Version 1.2: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description