4OYL

Humicola insolens cutinase in complex with mono-ethylphosphate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.143 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Thermodynamic and structural investigation of the specific SDS binding of Humicola insolens cutinase.

Kold, D.Dauter, Z.Laustsen, A.K.Brzozowski, A.M.Turkenburg, J.P.Nielsen, A.D.Kolds, H.Petersen, E.Schitt, B.De Maria, L.Wilson, K.S.Svendsen, A.Wimmer, R.

(2014) Protein Sci. 23: 1023-1035

  • DOI: 10.1002/pro.2489
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The interaction of lipolytic enzymes with anionic surfactants is of great interest with respect to industrially produced detergents. Here, we report the interaction of cutinase from the thermophilic fungus Humicola insolens with the anionic surfactan ...

    The interaction of lipolytic enzymes with anionic surfactants is of great interest with respect to industrially produced detergents. Here, we report the interaction of cutinase from the thermophilic fungus Humicola insolens with the anionic surfactant SDS, and show the enzyme specifically binds a single SDS molecule under nondenaturing concentrations. Protein interaction with SDS was investigated by NMR, ITC and molecular dynamics simulations. The NMR resonances of the protein were assigned, with large stretches of the protein molecule not showing any detectable resonances. SDS is shown to specifically interact with the loops surrounding the catalytic triad with medium affinity (Ka ≈ 10(5) M(-1) ). The mode of binding is closely similar to that seen previously for binding of amphiphilic molecules and substrate analogues to cutinases, and hence SDS acts as a substrate mimic. In addition, the structure of the enzyme has been solved by X-ray crystallography in its apo form and after cocrystallization with diethyl p-nitrophenyl phosphate (DNPP) leading to a complex with monoethylphosphate (MEP) esterified to the catalytically active serine. The enzyme has the same fold as reported for other cutinases but, unexpectedly, esterification of the active site serine is accompanied by the ethylation of the active site histidine which flips out from its usual position in the triad.


    Organizational Affiliation

    Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 49, DK-9000, Aalborg, Denmark.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cutinase
A, B, C
194Humicola insolensMutation(s): 0 
EC: 3.1.1.74
Find proteins for A0A075B5G4 (Humicola insolens)
Go to UniProtKB:  A0A075B5G4
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
OYL
Query on OYL
A, B, C
L-peptide linkingC8 H13 N3 O2HIS
MIR
Query on MIR
A, B, C
L-PEPTIDE LINKINGC5 H12 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.143 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 71.630α = 90.00
b = 66.400β = 119.30
c = 71.980γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
AMoREphasing
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-25
    Type: Initial release
  • Version 1.1: 2014-10-01
    Type: Database references
  • Version 1.2: 2015-01-07
    Type: Database references
  • Version 1.3: 2015-09-23
    Type: Data collection
  • Version 1.4: 2017-11-22
    Type: Data collection, Database references, Derived calculations, Refinement description