1ETH

TRIACYLGLYCEROL LIPASE/COLIPASE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Lipase activation by nonionic detergents. The crystal structure of the porcine lipase-colipase-tetraethylene glycol monooctyl ether complex.

Hermoso, J.Pignol, D.Kerfelec, B.Crenon, I.Chapus, C.Fontecilla-Camps, J.C.

(1996) J.Biol.Chem. 271: 18007-18016


  • PubMed Abstract: 
  • The crystal structure of the ternary porcine lipase-colipase-tetra ethylene glycol monooctyl ether (TGME) complex has been determined at 2.8 A resolution. The crystals belong to the cubic space group F23 with a = 289.1 A and display a strong pseudo-s ...

    The crystal structure of the ternary porcine lipase-colipase-tetra ethylene glycol monooctyl ether (TGME) complex has been determined at 2.8 A resolution. The crystals belong to the cubic space group F23 with a = 289.1 A and display a strong pseudo-symmetry corresponding to a P23 lattice. Unexpectedly, the crystalline two-domain lipase is found in its open configuration. This indicates that in the presence of colipase, pure micelles of the nonionic detergent TGME are able to activate the enzyme; a process that includes the movement of an N-terminal domain loop (the flap). The effects of TGME and colipase have been confirmed by chemical modification of the active site serine residue using diisopropyl p-nitrophenylphosphate (E600). In addition, the presence of a TGME molecule tightly bound to the active site pocket shows that TGME acts as a substrate analog, thus possibly explaining the inhibitory effect of this nonionic detergent on emulsified substrate hydrolysis at submicellar concentrations. A comparison of the lipase-colipase interactions between our porcine complex and the human-porcine complex (van Tilbeurgh, H., Egloff, M.-P., Martinez, C., Rugani, N., Verger, R., and Cambillau, C.(1993) Nature 362, 814-820) indicates that except for one salt bridge interaction, they are conserved. Analysis of the superimposed complexes shows a 5.4 degrees rotation on the relative position of the N-terminal domains excepting the flap that moves in a concerted fashion with the C-terminal domain. This flexibility may be important for the binding of the complex to the water-lipid interface.


    Related Citations: 
    • Interfacial Activation of the Lipase-Procolipase Complex by Mixed Micelles Revealed by X-Ray Crystallography
      Van Tilbeurgh, H.,Egloff, M.P.,Martinez, C.,Rugani, N.,Verger, R.,Cambillau, C.
      (1993) Nature 362: 814
    • Structure of the Pancreatic Lipase-Procolipase Complex
      Van Tilbeurgh, H.,Sarda, L.,Verger, R.,Cambillau, C.
      (1992) Nature 359: 159


    Organizational Affiliation

    Laboratoire de Cristallographie et de Cristallogénèse des Protéines, Institut de Biologie Structurale Jean-Pierre Ebel, CEA-CNRS, Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRIACYLGLYCEROL ACYL-HYDROLASE
A, C
448Sus scrofaMutation(s): 0 
Gene Names: PNLIP
EC: 3.1.1.3
Find proteins for P00591 (Sus scrofa)
Go to Gene View: PNLIP
Go to UniProtKB:  P00591
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
COLIPASE
B, D
95Sus scrofaMutation(s): 0 
Gene Names: CLPS
Find proteins for P02703 (Sus scrofa)
Go to Gene View: CLPS
Go to UniProtKB:  P02703
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
C8E
Query on C8E

Download SDF File 
Download CCD File 
A, C
(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE
C16 H34 O5
FEOZZFHAVXYAMB-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, C
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
BMA
Query on BMA

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Download CCD File 
A, C
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
BME
Query on BME

Download SDF File 
Download CCD File 
A, C
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.210 
  • Space Group: F 2 3
Unit Cell:
Length (Å)Angle (°)
a = 289.100α = 90.00
b = 289.100β = 90.00
c = 289.100γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
MOSFLMdata reduction
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-12-07
    Type: Initial release
  • Version 1.1: 2008-03-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2018-03-21
    Type: Data collection