1AQZ

CRYSTAL STRUCTURE OF A HIGHLY SPECIFIC ASPERGILLUS RIBOTOXIN, RESTRICTOCIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Insights into specificity of cleavage and mechanism of cell entry from the crystal structure of the highly specific Aspergillus ribotoxin, restrictocin.

Yang, X.Moffat, K.

(1996) Structure 4: 837-852


  • PubMed Abstract: 
  • Restriction, a highly specific ribotoxin made by the fungus Aspergillus restrictus, cleaves a single phosphodiester bond in the 28S RNA of eukaryotic ribosomes, inhibiting protein synthesis. The sequence around this cleavage site is a binding site fo ...

    Restriction, a highly specific ribotoxin made by the fungus Aspergillus restrictus, cleaves a single phosphodiester bond in the 28S RNA of eukaryotic ribosomes, inhibiting protein synthesis. The sequence around this cleavage site is a binding site for elongation factors, and is conserved in all cytoplasmic ribosomes. The catalytic mechanism of restrictocin and the reasons for its high substrate specificity are unknown. No structure has been determined for any other member of the Aspergillus ribotoxin family.


    Related Citations: 
    • The Mechanism of Action of the Cytotoxic Nuclease Alpha-Sarcin and its Use to Analyse Ribosome Structure
      Wool, I.G.
      (1984) Trends Biochem.Sci. 9: 14
    • Specific Protein-Nucleic Acid Recognition in Ribonuclease T1-2'-Guanylic Acid Complex: An X-Ray Study
      Heinemann, U.,Saenger, W.
      (1982) Nature 299: 27
    • The Conformation of the Sarcin/Ricin Loop from 28S Ribosomal RNA
      Szewczak, A.A.,Moore, P.B.,Chan, Y.L.,Wool, I.G.
      (1993) Proc.Natl.Acad.Sci.USA 90: 9581
    • Determination and Restrained Least-Squares Refinement of the Structures of Ribonuclease Sa and its Complex with 3'-Guanylic Acid at 1.8 A Resolution
      Sevcik, J.,Dodson, E.J.,Dodson, G.G.
      (1991) Acta Crystallogr.,Sect.B 47: 240
    • Crystallization and Preliminary Characterization of Mitogillin, a Ribosomal Ribonuclease from Aspergillus Restrictus
      Martinez, S.E.,Smith, J.L.
      (1991) J.Mol.Biol. 218: 489


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, Illinois 60637, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RESTRICTOCIN
A, B
149Aspergillus restrictusGene Names: ret
EC: 3.1.27.-
Find proteins for P67876 (Aspergillus restrictus)
Go to UniProtKB:  P67876
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.237 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 50.240α = 90.00
b = 82.160β = 100.50
c = 38.040γ = 90.00
Software Package:
Software NamePurpose
LAUEVIEWdata collection
LAUEVIEWdata scaling
X-PLORrefinement
X-PLORmodel building
LAUEVIEWdata reduction
X-PLORphasing
PHASESphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1997-08-04 
  • Released Date: 1997-11-12 
  • Deposition Author(s): Yang, X., Moffat, K.

Revision History 

  • Version 1.0: 1997-11-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance