3PIM

Crystal structure of Mxr1 from Saccharomyces cerevisiae in unusual oxidized form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.238 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural plasticity of the thioredoxin recognition site of yeast methionine S-sulfoxide reductase Mxr1

Ma, X.X.Guo, P.C.Shi, W.W.Luo, M.Tan, X.F.Chen, Y.Zhou, C.Z.

(2011) J Biol Chem 286: 13430-13437

  • DOI: 10.1074/jbc.M110.205161
  • Primary Citation of Related Structures:  
    3PIL, 3PIM, 3PIN

  • PubMed Abstract: 
  • The methionine S-sulfoxide reductase MsrA catalyzes the reduction of methionine sulfoxide, a ubiquitous reaction depending on the thioredoxin system. To investigate interactions between MsrA and thioredoxin (Trx), we determined the crystal structures of yeast MsrA/Mxr1 in their reduced, oxidized, and Trx2-complexed forms, at 2 ...

    The methionine S-sulfoxide reductase MsrA catalyzes the reduction of methionine sulfoxide, a ubiquitous reaction depending on the thioredoxin system. To investigate interactions between MsrA and thioredoxin (Trx), we determined the crystal structures of yeast MsrA/Mxr1 in their reduced, oxidized, and Trx2-complexed forms, at 2.03, 1.90, and 2.70 Å, respectively. Comparative structure analysis revealed significant conformational changes of the three loops, which form a plastic "cushion" to harbor the electron donor Trx2. The flexible C-terminal loop enabled Mxr1 to access the methionine sulfoxide on various protein substrates. Moreover, the plasticity of the Trx binding site on Mxr1 provides structural insights into the recognition of diverse substrates by a universal catalytic motif of Trx.


    Organizational Affiliation

    Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide methionine sulfoxide reductase ABC187Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: MXR1
EC: 1.8.4.11
Find proteins for P40029 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40029 
Go to UniProtKB:  P40029
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.238 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 111.894α = 90
b = 111.894β = 90
c = 108.124γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-02-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-04-09
    Changes: Database references