3PIN

Crystal structure of Mxr1 from Saccharomyces cerevisiae in complex with Trx2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.234 

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:  

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioredoxin-2
A
104Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: TRX2 (TRX1)
Find proteins for P22803 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P22803
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Peptide methionine sulfoxide reductase
B
183Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 4 
Gene Names: MXR1
EC: 1.8.4.11
Find proteins for P40029 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P40029
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.234 
  • Space Group: I 2 3
Unit Cell:
Length (Å)Angle (°)
a = 122.266α = 90.00
b = 122.266β = 90.00
c = 122.266γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
MOLREPphasing
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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