1LLF

Cholesterol Esterase (Candida Cylindracea) Crystal Structure at 1.4A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.169 
  • R-Value Work: 0.136 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Three-dimensional structure of homodimeric cholesterol esterase-ligand complex at 1.4 A resolution.

Pletnev, V.Addlagatta, A.Wawrzak, Z.Duax, W.

(2003) Acta Crystallogr.,Sect.D 59: 50-56


  • PubMed Abstract: 
  • The three-dimensional structure of a Candida cylindracea cholesterol esterase (ChE) homodimer (534 x 2 amino acids) in complex with a ligand of proposed formula C(23)H(48)O(2) has been determined at 1.4 A resolution in space group P1 using synchrotro ...

    The three-dimensional structure of a Candida cylindracea cholesterol esterase (ChE) homodimer (534 x 2 amino acids) in complex with a ligand of proposed formula C(23)H(48)O(2) has been determined at 1.4 A resolution in space group P1 using synchrotron low-temperature data. The structure refined to R = 0.136 and R(free) = 0.169 and has revealed new stereochemical details in addition to those detected for the apo- and holo-forms at 1.9 and 2.0 A resolution, respectively [Ghosh et al. (1995), Structure, 3, 279-288]. The cholesterol esterase structure is a dimer with four spatially separated interfacial contact areas and two symmetry-related pairs of openings to an internal intradimer cavity. Hydrophobic active-site gorges in each subunit face each other across a central interfacial cavity. The ChE subunits have carbohydrate chains attached to their Asn314 and Asn351 residues, with two ordered N-acetyl-D-glucosoamine moieties visible at each site. The side chains of 14 residues have two alternative conformations with occupancy values of 0.5 +/- 0.2. For each subunit the electron density in the enzyme active-site gorge is well modeled by a C(23)-chain fatty acid.


    Related Citations: 
    • Structure of uncomplexed and linoleate-bound Candida cylindracea cholesterol esterase
      Ghosh, D.,Wawrzak, Z.,Pletnev, V.Z.,Li, N.,Kaiser, R.,Pangborn, W.,Jornvall, H.,Erman, M.,Duax, W.L.
      (1995) Structure 3: 279


    Organizational Affiliation

    Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lipase 3
A, B
534[Candida] cylindraceaMutation(s): 0 
EC: 3.1.1.3
Find proteins for Q6S5M9 ([Candida] cylindracea)
Go to UniProtKB:  Q6S5M9
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
F23
Query on F23

Download SDF File 
Download CCD File 
A, B
TRICOSANOIC ACID
C23 H46 O2
XEZVDURJDFGERA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.169 
  • R-Value Work: 0.136 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 58.461α = 92.71
b = 58.477β = 97.48
c = 89.515γ = 109.38
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHELXL-97refinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-07
    Type: Initial release
  • Version 1.1: 2007-10-21
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance