4BE4

Closed conformation of O. piceae sterol esterase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structures of Ophiostoma Piceae Sterol Esterase: Structural Insights Into Activation Mechanism and Product Release.

Gutierrez-Fernandez, J.Vaquero, M.E.Prieto, A.Barriuso, J.Martinez, M.J.Hermoso, J.A.

(2014) J.Struct.Biol. 187: 215

  • DOI: 10.1016/j.jsb.2014.07.007
  • Primary Citation of Related Structures:  4BE9, 4UPD

  • PubMed Abstract: 
  • Sterol esterases are able to efficiently hydrolyze both sterol esters and triglycerides and to carry out synthesis reactions in the presence of organic solvents. Their high versatility makes them excellent candidates for biotechnological purposes. St ...

    Sterol esterases are able to efficiently hydrolyze both sterol esters and triglycerides and to carry out synthesis reactions in the presence of organic solvents. Their high versatility makes them excellent candidates for biotechnological purposes. Sterol esterase from fungus Ophiostoma piceae (OPE) belongs to the family abH03.01 of the Candida rugosa lipase-like proteins. Crystal structures of OPE were solved in this study for the closed and open conformations. Enzyme activation involves a large displacement of the conserved lid, structural rearrangements of loop α16-α17, and formation of a dimer with a large opening. Three PEG molecules are placed in the active site, mimicking chains of the triglyceride substrate, demonstrating the position of the oxyanion hole and the three pockets that accommodate the sn-1, sn-2 and sn-3 fatty acids chains. One of them is an internal tunnel, connecting the active center with the outer surface of the enzyme 30 Å far from the catalytic Ser220. Based on our structural and biochemical results we propose a mechanism by which a great variety of different substrates can be hydrolyzed in OPE paving the way for the construction of new variants to improve the catalytic properties of these enzymes and their biotechnological applications.


    Organizational Affiliation

    Departamento de Cristalografía y Biología Estructural, Instituto de Química-Física "Rocasolano", CSIC, Serrano 119, 28006 Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
STEROL ESTERASE
A
545Ophiostoma piceaeEC: 3.1.1.-
Find proteins for Q2TFW1 (Ophiostoma piceae)
Go to UniProtKB:  Q2TFW1
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
DIO
Query on DIO

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Download CCD File 
A
1,4-DIETHYLENE DIOXIDE
C4 H8 O2
RYHBNJHYFVUHQT-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

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Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
MES
Query on MES

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Download CCD File 
A
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.164 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 119.274α = 90.00
b = 119.274β = 90.00
c = 206.774γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
SCALAdata scaling
XDSdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-19
    Type: Initial release
  • Version 1.1: 2014-09-24
    Type: Database references