3ECA

CRYSTAL STRUCTURE OF ESCHERICHIA COLI L-ASPARAGINASE, AN ENZYME USED IN CANCER THERAPY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of Escherichia coli L-asparaginase, an enzyme used in cancer therapy.

Swain, A.L.Jaskolski, M.Housset, D.Rao, J.K.Wlodawer, A.

(1993) Proc.Natl.Acad.Sci.USA 90: 1474-1478

  • Also Cited By: 1HG1, 1HG0, 1HFW, 1HFK, 1HFJ

  • PubMed Abstract: 
  • The crystal structure of Escherichia coli asparaginase II (EC 3.5.1.1), a drug (Elspar) used for the treatment of acute lymphoblastic leukemia, has been determined at 2.3 A resolution by using data from a single heavy atom derivative in combination w ...

    The crystal structure of Escherichia coli asparaginase II (EC 3.5.1.1), a drug (Elspar) used for the treatment of acute lymphoblastic leukemia, has been determined at 2.3 A resolution by using data from a single heavy atom derivative in combination with molecular replacement. The atomic model was refined to an R factor of 0.143. This enzyme, active as a homotetramer with 222 symmetry, belongs to the class of alpha/beta proteins. Each subunit has two domains with unique topological features. On the basis of present structural evidence consistent with previous biochemical studies, we propose locations for the active sites between the N- and C-terminal domains belonging to different subunits and postulate a catalytic role for Thr-89.


    Related Citations: 
    • Preliminary Crystal Structure of Acinetobacter Glutaminasificans Glutaminase-Asparaginase
      Ammon, H.L.,Weber, I.T.,Wlodawer, A.,Harrison, R.W.,Gilliland, G.L.,Murphy, K.C.,Sjolin, L.,Roberts, J.
      (1988) J.Biol.Chem. 263: 150


    Organizational Affiliation

    Macromolecular Structure Laboratory, National Cancer Institute-Frederick Cancer Research and Development Center, MD 21702-1201.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ASPARAGINASE TYPE II
A, B, C, D
326Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: ansB
EC: 3.5.1.1
Find proteins for P00805 (Escherichia coli (strain K12))
Go to UniProtKB:  P00805
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ASP
Query on ASP

Download SDF File 
Download CCD File 
A, B, C, D
ASPARTIC ACID
C4 H7 N O4
CKLJMWTZIZZHCS-REOHCLBHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.149 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 76.700α = 90.00
b = 96.100β = 97.10
c = 111.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other