1AQZ

CRYSTAL STRUCTURE OF A HIGHLY SPECIFIC ASPERGILLUS RIBOTOXIN, RESTRICTOCIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.237 
  • R-Value Observed: 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

  • DOI: 10.1016/s0969-2126(96)00090-1
  • Primary Citation of Related Structures:  
    1AQZ

  • 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 for elongation factors, and is conserved in all cytoplasmic ribosomes ...

    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 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 U S A 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 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
    • 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

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RESTRICTOCINA, B149Aspergillus restrictusMutation(s): 0 
Gene Names: ret
EC: 3.1.27
UniProt
Find proteins for P67876 (Aspergillus restrictus)
Explore P67876 
Go to UniProtKB:  P67876
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download Ideal Coordinates CCD File 
C [auth A], D [auth A], E [auth B]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.237 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.24α = 90
b = 82.16β = 100.5
c = 38.04γ = 90
Software Package:
Software NamePurpose
LAUEVIEWdata collection
LAUEVIEWdata reduction
PHASESphasing
X-PLORmodel building
X-PLORrefinement
LAUEVIEWdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

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

Revision History  (Full details and data files)

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