1F6W

STRUCTURE OF THE CATALYTIC DOMAIN OF HUMAN BILE SALT ACTIVATED LIPASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of the catalytic domain of human bile salt activated lipase.

Terzyan, S.Wang, C.S.Downs, D.Hunter, B.Zhang, X.C.

(2000) Protein Sci 9: 1783-1790

  • DOI: 10.1110/ps.9.9.1783
  • Primary Citation of Related Structures:  
    1F6W

  • PubMed Abstract: 
  • Bile-salt activated lipase (BAL) is a pancreatic enzyme that digests a variety of lipids in the small intestine. A distinct property of BAL is its dependency on bile salts in hydrolyzing substrates of long acyl chains or bulky alcoholic motifs. A crystal structure of the catalytic domain of human BAL (residues 1-538) with two surface mutations (N186D and A298D), which were introduced in attempting to facilitate crystallization, has been determined at 2 ...

    Bile-salt activated lipase (BAL) is a pancreatic enzyme that digests a variety of lipids in the small intestine. A distinct property of BAL is its dependency on bile salts in hydrolyzing substrates of long acyl chains or bulky alcoholic motifs. A crystal structure of the catalytic domain of human BAL (residues 1-538) with two surface mutations (N186D and A298D), which were introduced in attempting to facilitate crystallization, has been determined at 2.3 A resolution. The crystal form belongs to space group P2(1)2(1)2(1) with one monomer per asymmetric unit, and the protein shows an alpha/beta hydrolase fold. In the absence of bound bile salt molecules, the protein possesses a preformed catalytic triad and a functional oxyanion hole. Several surface loops around the active site are mobile, including two loops potentially involved in substrate binding (residues 115-125 and 270-285).


    Organizational Affiliation

    Crystallography Program, Oklahoma Medical Research Foundation, Oklahoma City 73104, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BILE SALT ACTIVATED LIPASEA533Homo sapiensMutation(s): 2 
Gene Names: CELBAL
EC: 3.1.1.3 (PDB Primary Data), 3.1.1.13 (UniProt), 3.1.1.6 (UniProt)
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P19835 (Homo sapiens)
Explore P19835 
Go to UniProtKB:  P19835
PHAROS:  P19835
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.212 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.7α = 90
b = 88.97β = 90
c = 104.3γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2000-06-23 
  • Released Date: 2000-10-18 
  • Deposition Author(s): Terzyan, S., Zhang, X.

Revision History  (Full details and data files)

  • Version 1.0: 2000-10-18
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance