3DYR

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.2 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

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioredoxin-1
A, B
111Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: trxA (fipA, tsnC)
Find proteins for P0AA25 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AA25
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.251 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 58.790α = 90.00
b = 39.390β = 96.63
c = 90.550γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data scaling
HKL-2000data reduction
CNSphasing
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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