4PW8

Human tryptophan 2,3-dioxygenase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and functional analyses of human tryptophan 2,3-dioxygenase

Meng, B.Wu, D.Gu, J.Ouyang, S.Ding, W.Liu, Z.J.

(2014) Proteins 82: 3210-3216

  • DOI: 10.1002/prot.24653
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Tryptophan 2,3-dioxygenase (TDO), one of the two key enzymes in the kynurenine pathway, catalyzes the indole ring cleavage at the C2-C3 bond of L-tryptophan. This is a rate-limiting step in the regulation of tryptophan concentration in vivo, and is t ...

    Tryptophan 2,3-dioxygenase (TDO), one of the two key enzymes in the kynurenine pathway, catalyzes the indole ring cleavage at the C2-C3 bond of L-tryptophan. This is a rate-limiting step in the regulation of tryptophan concentration in vivo, and is thus important in drug discovery for cancer and immune diseases. Here, we report the crystal structure of human TDO (hTDO) without the heme cofactor to 2.90 Å resolution. The overall fold and the tertiary assembly of hTDO into a tetramer, as well as the active site architecture, are well conserved and similar to the structures of known orthologues. Kinetic and mutational studies confirmed that eight residues play critical roles in L-tryptophan oxidation.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tryptophan 2,3-dioxygenase
A, B, C, D, E, F, G, H
373Homo sapiensMutation(s): 0 
Gene Names: TDOTDO2
EC: 1.13.11.11
Find proteins for P48775 (Homo sapiens)
Go to UniProtKB:  P48775
NIH Common Fund Data Resources
PHAROS  P48775
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CO
Query on CO

Download CCD File 
H
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.204 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 134.334α = 90
b = 156.922β = 90
c = 160.33γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
PHASESphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-08-06
    Type: Initial release
  • Version 1.1: 2015-12-16
    Changes: Database references