1GYR

Mutant form of enoyl thioester reductase from Candida tropicalis

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structure-Function Analysis of Enoyl Thioester Reductase Involved in Mitochondrial Maintenance

Airenne, T.T., Torkko, J.M., Van Der Plas, S., Sormunen, R.T., Kastaniotis, A.J., Wierenga, R.K., Hiltunen, J.K.

(2003) J Mol Biol 327: 47

  • DOI: https://doi.org/10.1016/s0022-2836(03)00038-x
  • Primary Citation of Related Structures:  
    1GU7, 1GUF, 1GYR

  • PubMed Abstract: 

    Candida tropicalis enoyl thioester reductase Etr1p and the Saccharomyces cerevisiae homologue Mrf1p catalyse the NADPH-dependent reduction of trans-2-enoyl thioesters in mitochondrial fatty acid synthesis (FAS). Unlike prokaryotic enoyl thioester reductases (ETRs), which belong to the short-chain dehydrogenases/reductases (SDR), Etr1p and Mrf1p represent structurally distinguishable ETRs that belong to the medium-chain dehydrogenases/reductases (MDR) superfamily, indicating independent origin of two separate classes of ETRs. The crystal structures of Etr1p, the Etr1p-NADPH complex and the Etr1Y79Np mutant were refined to 1.70A, 2.25A and 2.60A resolution, respectively. The native fold of Etr1p was maintained in Etr1Y79Np, but the mutant had only 0.1% of Etr1p catalytic activity remaining and failed to rescue the respiratory deficient phenotype of the mrf1Delta strain. Mutagenesis of Tyr73 in Mrf1p, corresponding to Tyr79 in Etr1p, produced similar results. Our data indicate that the mitochondrial reductase activity is indispensable for respiratory function in yeast, emphasizing the significance of Mrf1p (Etr1p) and mitochondrial FAS for the integrity of the respiratory competent organelle.

    • Organizational Affiliation: 

    Biocenter Oulu and Department of Biochemistry, P.O. Box 3000, FIN-90014 University of Oulu, Finland.


Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
2,4-DIENOYL-COA REDUCTASE
A, B, C
364Candida tropicalisMutation(s): 1 
UniProt
Find proteins for Q8WZM3 (Candida tropicalis)
Explore Q8WZM3 
Go to UniProtKB:  Q8WZM3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8WZM3
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
G [auth A]
H [auth A]
I [auth A]
N [auth B]
O [auth B]
G [auth A],
H [auth A],
I [auth A],
N [auth B],
O [auth B],
P [auth B],
U [auth C],
V [auth C],
W [auth C]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL
Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
J [auth B]
K [auth B]
D [auth A],
E [auth A],
F [auth A],
J [auth B],
K [auth B],
L [auth B],
M [auth B],
Q [auth C],
R [auth C],
S [auth C],
T [auth C]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 156.015α = 90
b = 104.139β = 99.77
c = 93.952γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata scaling

Structure Validation

View Full Validation Report



View more in-depth experimental data
Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-03-13
    Type: Initial release
  • Version 1.1: 2011-10-19
    Changes: Derived calculations, Non-polymer description, Other, Version format compliance
  • Version 1.2: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description