3DYR

Crystal structure of E. coli thioredoxin mutant I76T in its oxidized form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.251 
  • R-Value Observed: 0.254 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Properties of the thioredoxin fold superfamily are modulated by a single amino acid residue.

Ren, G.Stephan, D.Xu, Z.Zheng, Y.Tang, D.Harrison, R.S.Kurz, M.Jarrott, R.Shouldice, S.R.Hiniker, A.Martin, J.L.Heras, B.Bardwell, J.C.

(2009) J Biol Chem 284: 10150-10159

  • DOI: 10.1074/jbc.M809509200
  • Primary Citation of Related Structures:  
    3DYR

  • PubMed Abstract: 
  • The ubiquitous thioredoxin fold proteins catalyze oxidation, reduction, or disulfide exchange reactions depending on their redox properties. They also play vital roles in protein folding, redox control, and disease. Here, we have shown that a single residue strongly modifies both the redox properties of thioredoxin fold proteins and their ability to interact with substrates ...

    The ubiquitous thioredoxin fold proteins catalyze oxidation, reduction, or disulfide exchange reactions depending on their redox properties. They also play vital roles in protein folding, redox control, and disease. Here, we have shown that a single residue strongly modifies both the redox properties of thioredoxin fold proteins and their ability to interact with substrates. This residue is adjacent in three-dimensional space to the characteristic CXXC active site motif of thioredoxin fold proteins but distant in sequence. This residue is just N-terminal to the conservative cis-proline. It is isoleucine 75 in the case of thioredoxin. Our findings support the conclusion that a very small percentage of the amino acid residues of thioredoxin-related proteins are capable of dictating the functions of these proteins.


    Organizational Affiliation

    Howard Hughes Medical Institute, Departments of Molecular, Cellular, and Developmental Biology and Biological Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Thioredoxin-1A, B111Escherichia coli K-12Mutation(s): 1 
Gene Names: trxAfipAtsnCb3781JW5856
UniProt
Find proteins for P0AA25 (Escherichia coli (strain K12))
Explore P0AA25 
Go to UniProtKB:  P0AA25
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.251 
  • R-Value Observed: 0.254 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.79α = 90
b = 39.39β = 96.63
c = 90.55γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling
CNSphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-01-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Advisory, Refinement description
  • Version 1.3: 2019-07-24
    Changes: Data collection, Refinement description