Biological Assembly 1  

 3D View: Structure

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 162.89 kDa 
• Atom Count: 12131 
• Residue Count: 1428 
• Unique protein chains: 1

1EPX

CRYSTAL STRUCTURE ANALYSIS OF ALDOLASE FROM L. MEXICANA

• DOI: 10.2210/pdb1EPX/pdb

• Classification: LYASE
• Organism(s): Leishmania mexicana
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-03-29 Released: 2000-07-13 
• Deposition Author(s): Chudzik, D.M., Michels, P.A., de Walque, S., Hol, W.G.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.213 
• R-Value Work: 0.161 
• R-Value Observed: 0.175 

Literature

Structures of type 2 peroxisomal targeting signals in two trypanosomatid aldolases.

Chudzik, D.M., Michels, P.A., de Walque, S., Hol, W.G.

(2000) J Mol Biol 300: 697-707

• PubMed: 10891264 
• DOI: 10.1006/jmbi.2000.3910
• Primary Citation of Related Structures:  
  1EPX, 1F2J


• PubMed Abstract: 
  

Trypanosomatids, unicellular organisms responsible for several global diseases, contain unique organelles called glycosomes in which the first seven glycolytic enzymes are sequestered. We report the crystal structures of glycosomal fructose-1,6-bisphosphate aldolase from two major tropical pathogens, Trypanosoma brucei and Leishmania mexicana, the causative agents of African sleeping sickness and one form of leishmaniasis, respectively. Unlike mammalian aldolases, the T. brucei and L. mexicana aldolases contain nonameric N-terminal type 2 peroxisomal targeting signals (PTS2s) to direct their import into the glycosome. In both tetrameric trypanosomatid aldolases, the PTS2s from two different subunits form two closely intertwined structures. These "PTS2 dimers", which have very similar conformations in the two aldolase structures, are the first reported conformations of a glycosomal or peroxisomal PTS2, and provide opportunities for the design of trypanocidal compounds.

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Organizational Affiliation: 

Departments of Biological Structure and Biochemistry Biomolecular Structure Center, University of Washington, Seattle, WA, 98195-7742, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FRUCTOSE-1,6-BISPHOSPHATE ALDOLASE	A, B, C, D	370	Leishmania mexicana	Mutation(s): 0  Gene Names: ald EC: 4.1.2.13
Find proteins for Q9U5N6 (Leishmania mexicana) Explore Q9U5N6  Go to UniProtKB:  Q9U5N6

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.213 
• R-Value Work: 0.161 
• R-Value Observed: 0.175 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.8	α = 90
b = 118.1	β = 90
c = 159.6	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-03-29 
• Released Date: 2000-07-13 
Deposition Author(s): Chudzik, D.M., Michels, P.A., de Walque, S., Hol, W.G.J.

Revision History 

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