1LBS

LIPASE (E.C.3.1.1.3) (TRIACYLGLYCEROL HYDROLASE)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.193 

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Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history. 


Literature

Crystallographic and molecular-modeling studies of lipase B from Candida antarctica reveal a stereospecificity pocket for secondary alcohols.

Uppenberg, J., Ohrner, N., Norin, M., Hult, K., Kleywegt, G.J., Patkar, S., Waagen, V., Anthonsen, T., Jones, T.A.

(1995) Biochemistry 34: 16838-16851

  • DOI: 10.1021/bi00051a035
  • Primary Citation of Related Structures:  
    1LBS, 1LBT

  • PubMed Abstract: 

    • Many lipases are potent catalysts of stereoselective reactions and are therefore of interest for use in chemical synthesis. The crystal structures of lipases show a large variation in the shapes of their active site environments that may explain the large variation in substrate specificity of these enzymes ...

    Many lipases are potent catalysts of stereoselective reactions and are therefore of interest for use in chemical synthesis. The crystal structures of lipases show a large variation in the shapes of their active site environments that may explain the large variation in substrate specificity of these enzymes. We have determined the three-dimensional structure of Candida antarctica lipase B (CALB) cocrystallized with the detergent Tween 80. In another crystal form, the structure of the enzyme in complex with a covalently bound phosphonate inhibitor has been determined. In both structures, the active site is exposed to the external solvent. The potential lid-forming helix alpha 5 in CALB is well-ordered in the Tween 80 structure and disordered in the inhibitor complex. The tetrahedral intermediates of two chiral substrates have been modeled on the basis of available structural and biochemical information. The results of this study provide a structural explanation for the high stereoselectivity of CALB toward many secondary alcohols.

    Related Citations: 
    • Crystallization and Preliminary X-Ray Studies of Lipase B from Candida Antarctica
      Uppenberg, J., Patkar, S., Bergfors, T., Jones, T.A.
      (1994) J Mol Biol 235: 790
    • The Sequence, Crystal Structure Determination and Refinement of Two Crystal Forms of Lipase B from Candida Antarctica
      Uppenberg, J., Hansen, M.T., Patkar, S., Jones, T.A.
      (1994) Structure 2: 293
    Organizational Affiliation: 

    Department of Molecular Biology, Uppsala University, Sweden.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
LIPASE BA, B, C, D, E, F317Moesziomyces antarcticusMutation(s): 0 
EC: 3.1.1.3
Membrane Entity: Yes 
UniProt
Find proteins for P41365 (Pseudozyma antarctica)
Explore P41365 
Go to UniProtKB:  P41365
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseG, H, I, J, K, L2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 229.5α = 90
b = 95.6β = 90
c = 86.8γ = 90
Software Package:
Software NamePurpose
MADNESdata collection
X-PLORmodel building
X-PLORrefinement
MADNESdata reduction
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary