1PJH

Structural studies on delta3-delta2-enoyl-CoA isomerase: the variable mode of assembly of the trimeric disks of the crotonase superfamily


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.168 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural studies on delta(3)-delta(2)-enoyl-CoA isomerase: the variable mode of assembly of the trimeric disks of the crotonase superfamily.

Mursula, A.M.Hiltunen, J.K.Wierenga, R.K.

(2004) FEBS Lett 557: 81-87

  • DOI: 10.1016/s0014-5793(03)01450-9
  • Primary Citation of Related Structures:  
    1PJH

  • PubMed Abstract: 
  • Subunits of the enzymes in the crotonase superfamily form tight trimeric disks. In most members of this protein superfamily these disks assemble further into hexamers. Here we report on the 2.1 A structure of a tight hexameric crystal form of the yeast peroxisomal delta(3)-delta(2)-enoyl-CoA isomerase (Eci1p) ...

    Subunits of the enzymes in the crotonase superfamily form tight trimeric disks. In most members of this protein superfamily these disks assemble further into hexamers. Here we report on the 2.1 A structure of a tight hexameric crystal form of the yeast peroxisomal delta(3)-delta(2)-enoyl-CoA isomerase (Eci1p). A comparison of this structure to a previously solved crystal form of Eci1p and other structures of this superfamily shows that there is much variability with respect to the relative distance between the disks and their relative orientations. In particular helices H2 and H9 are involved in the inter-trimer contacts and there are considerable structural differences in these helices in this superfamily. Helices H2 and H9 are near the catalytic cavity and it is postulated that the observed structural variability of these helices, stabilized by the different modes of assembly, has allowed the evolution of the wide range of substrate and catalytic specificity within this enzyme superfamily.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
enoyl-CoA isomerase; Eci1pA, B, C280Saccharomyces cerevisiaeMutation(s): 1 
Gene Names: ECI1
EC: 5.3.3.8
Find proteins for Q05871 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q05871 
Go to UniProtKB:  Q05871
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.168 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.243α = 90
b = 116.243β = 90
c = 216.287γ = 90
Software Package:
Software NamePurpose
MAR345data collection
XDSdata reduction
AMoREphasing
REFMACrefinement
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-01-20
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description