1N9G

Mitochondrial 2-enoyl thioester reductase Etr1p/Etr2p heterodimer from Candida tropicalis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Candida tropicalis expresses two mitochondrial 2-enoyl thioester reductases that are able to form both homodimers and heterodimers.

Torkko, J.M.Koivuranta, K.T.Kastaniotis, A.J.Airenne, T.T.Glumoff, T.Ilves, M.Hartig, A.Gurvitz, A.Hiltunen, J.K.

(2003) J Biol Chem 278: 41213-41220

  • DOI: https://doi.org/10.1074/jbc.M307664200
  • Primary Citation of Related Structures:  
    1N9G

  • PubMed Abstract: 

    Here we report on the cloning of a Candida tropicalis gene, ETR2, that is closely related to ETR1. Both genes encode enzymatically active 2-enoyl thioester reductases involved in mitochondrial synthesis of fatty acids (fatty acid synthesis type II) and respiratory competence. The 5'- and 3'-flanking (coding) regions of ETR2 and ETR1 are about 90% (97%) identical, indicating that the genes have evolved via gene duplication. The gene products differ in three amino acid residues: Ile67 (Val), Ala92 (Thr), and Lys251 (Arg) in Etr2p (Etr1p). Quantitative PCR analysis and reverse transcriptase-PCR indicated that both genes were expressed about equally in fermenting and ETR1 predominantly respiring yeast cells. Like the situation with ETR1, expression of ETR2 in respiration-deficient Saccharomyces cerevisiae mutant cells devoid of Ybr026p/Etr1p was able to restore growth on glycerol. Triclosan that is used as an antibacterial agent against fatty acid synthesis type II 2-enoyl thioester reductases inhibited growth of FabI overexpressing mutant yeast cells but was not able to inhibit respiratory growth of the ETR2- or ETR1-complemented mutant yeast cells. Resolving of crystal structures obtained via Etr2p and Etr1p co-crystallization indicated that all possible dimer variants occur in the same asymmetric unit, suggesting that similar dimer formation also takes place in vivo.


  • Organizational Affiliation

    Biocenter Oulu, Department of Biochemistry, 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, C, F
386Candida tropicalisMutation(s): 0 
Gene Names: ETR2
UniProt
Find proteins for Q8WZM4 (Candida tropicalis)
Explore Q8WZM4 
Go to UniProtKB:  Q8WZM4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8WZM4
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
2,4-dienoyl-CoA reductase
B, D, E
386Candida tropicalisMutation(s): 0 
Gene Names: ETR1
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
NAP
Query on NAP

Download Ideal Coordinates CCD File 
H [auth A],
J [auth B],
O [auth E]
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
G [auth A]
I [auth B]
K [auth C]
L [auth D]
M [auth D]
G [auth A],
I [auth B],
K [auth C],
L [auth D],
M [auth D],
N [auth E],
P [auth F]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 229.453α = 90
b = 95.501β = 124.71
c = 164.229γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-12-09
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-03-07
    Changes: Advisory, Data collection
  • Version 1.4: 2023-08-16
    Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description