3WGX

Crystal structure of ERp46 Trx2 in a complex with Prx4 C-term


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.92 Å
  • R-Value Free: 0.158 
  • R-Value Work: 0.140 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Radically different thioredoxin domain arrangement of ERp46, an efficient disulfide bond introducer of the mammalian PDI family

Kojima, R.Okumura, M.Masui, S.Kanemura, S.Inoue, M.Saiki, M.Yamaguchi, H.Hikima, T.Suzuki, M.Akiyama, S.Inaba, K.

(2014) Structure 22: 431-443

  • DOI: 10.1016/j.str.2013.12.013
  • Primary Citation of Related Structures:  3WGD, 3WGE

  • PubMed Abstract: 
  • The mammalian endoplasmic reticulum (ER) contains a diverse oxidative protein folding network in which ERp46, a member of the protein disulfide isomerase (PDI) family, serves as an efficient disulfide bond introducer together with Peroxiredoxin-4 (Pr ...

    The mammalian endoplasmic reticulum (ER) contains a diverse oxidative protein folding network in which ERp46, a member of the protein disulfide isomerase (PDI) family, serves as an efficient disulfide bond introducer together with Peroxiredoxin-4 (Prx4). We revealed a radically different molecular architecture of ERp46, in which the N-terminal two thioredoxin (Trx) domains with positively charged patches near their peptide-binding site and the C-terminal Trx are linked by unusually long loops and arranged extendedly, forming an opened V-shape. Whereas PDI catalyzes native disulfide bond formation by the cooperative action of two mutually facing redox-active sites on folding intermediates bound to the central cleft, ERp46 Trx domains are separated, act independently, and engage in rapid but promiscuous disulfide bond formation during early oxidative protein folding. Thus, multiple PDI family members likely contribute to different stages of oxidative folding and work cooperatively to ensure the efficient production of multi-disulfide proteins in the ER.


    Organizational Affiliation

    Division of Protein Chemistry, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioredoxin domain-containing protein 5
A, B
113Homo sapiensGene Names: TXNDC5 (TLP46)
Find proteins for Q8NBS9 (Homo sapiens)
Go to Gene View: TXNDC5
Go to UniProtKB:  Q8NBS9
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Peroxiredoxin-4
C, D
20Mus musculusGene Names: Prdx4
EC: 1.11.1.15
Find proteins for O08807 (Mus musculus)
Go to UniProtKB:  O08807
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.92 Å
  • R-Value Free: 0.158 
  • R-Value Work: 0.140 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 35.098α = 81.17
b = 36.406β = 87.47
c = 40.594γ = 85.40
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-25
    Type: Initial release