1LBS

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.3 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

  • Primary Citation of Related Structures:  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 ...

    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: 
    • 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
    • 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


    Organizational Affiliation

    Department of Molecular Biology, Uppsala University, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LIPASE B
A, B, C, D, E, F
317Candida antarcticaEC: 3.1.1.3
Find proteins for P41365 (Candida antarctica)
Go to UniProtKB:  P41365
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D, E, F
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
HEE
Query on HEE

Download SDF File 
Download CCD File 
A, B, C, D, E, F
N-HEXYLPHOSPHONATE ETHYL ESTER
C8 H19 O3 P
XPLOQMVUXWZLET-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 229.500α = 90.00
b = 95.600β = 90.00
c = 86.800γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
MADNESdata collection
MADNESdata reduction
X-PLORphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other