1ETH

TRIACYLGLYCEROL LIPASE/COLIPASE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.210 

wwPDB Validation   3D Report Full Report


This is version 2.0 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

  • DOI: 10.1074/jbc.271.30.18007
  • Primary Citation of Related Structures:  
    1ETH

  • 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-symmetry corresponding to a P23 lattice ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRIACYLGLYCEROL ACYL-HYDROLASEA, C448Sus scrofaMutation(s): 0 
Gene Names: PNLIP
EC: 3.1.1.3
UniProt
Find proteins for P00591 (Sus scrofa)
Explore P00591 
Go to UniProtKB:  P00591
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
COLIPASEB, D95Sus scrofaMutation(s): 0 
Gene Names: CLPS
Membrane Entity: Yes 
UniProt
Find proteins for P02703 (Sus scrofa)
Explore P02703 
Go to UniProtKB:  P02703
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseE, F5N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G89225LT
GlyCosmos:  G89225LT
GlyGen:  G89225LT
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.210 
  • Space Group: F 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 289.1α = 90
b = 289.1β = 90
c = 289.1γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-12-07
    Type: Initial release
  • Version 1.1: 2008-03-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2018-03-21
    Changes: Data collection
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary