5DQY

A fully oxidized human thioredoxin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 

wwPDB Validation 3D Report Full Report



Literature

Crystal structure of fully oxidized human thioredoxin.

Hwang, J.Nguyen, L.T.Jeon, Y.H.Lee, C.Y.Kim, M.H.

(2015) Biochem Biophys Res Commun 467: 218-222

  • DOI: 10.1016/j.bbrc.2015.10.003
  • Primary Citation of Related Structures:  
    5DQY

  • PubMed Abstract: 
  • In addition to the active cysteines located at positions 32 and 35 in humans, mammalian cytosolic thioredoxin (TRX) possesses additional conserved cysteine residues at positions 62, 69, and 73. These non-canonical cysteine residues, that are distinct ...

    In addition to the active cysteines located at positions 32 and 35 in humans, mammalian cytosolic thioredoxin (TRX) possesses additional conserved cysteine residues at positions 62, 69, and 73. These non-canonical cysteine residues, that are distinct from prokaryotic TRX and also not found in mammalian mitochondrial TRX, have been implicated in biological functions regulating signal transduction pathways via their post-translational modifications. Here, we describe for the first time the structure of a fully oxidized TRX. The structure shows a non-active Cys62-Cys69 disulfide bond in addition to the active Cys32-Cys35 disulfide. The non-active disulfide switches the α3-helix of TRX, composed of residues Cys62 to Glu70, to a bulging loop and dramatically changes the environment of the TRX residues involved in the interaction with its reductase and other cellular substrates. This structural modification may have implications for a number of potential functions of TRX including the regulation of redox-dependent signaling pathways.


    Organizational Affiliation

    Infection and Immunity Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, South Korea. Electronic address: mhk8n@kribb.re.kr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ThioredoxinA105Homo sapiensMutation(s): 0 
Gene Names: TXNTRDXTRXTRX1
Find proteins for P10599 (Homo sapiens)
Explore P10599 
Go to UniProtKB:  P10599
NIH Common Fund Data Resources
PHAROS  P10599
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BEZ
Query on BEZ

Download CCD File 
A
BENZOIC ACID
C7 H6 O2
WPYMKLBDIGXBTP-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.204α = 90
b = 61.231β = 90
c = 64.839γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-09-15 
  • Released Date: 2015-12-23 
  • Deposition Author(s): Hwang, J.

Funding OrganizationLocationGrant Number
KRIBBKorea, Republic Of--

Revision History 

  • Version 1.0: 2015-12-23
    Type: Initial release