1DFJ

RIBONUCLEASE INHIBITOR COMPLEXED WITH RIBONUCLEASE A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.194 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A structural basis of the interactions between leucine-rich repeats and protein ligands.

Kobe, B.Deisenhofer, J.

(1995) Nature 374: 183-186

  • DOI: 10.1038/374183a0
  • Primary Citation of Related Structures:  
    1DFJ

  • PubMed Abstract: 
  • The leucine-rich repeat is a recently characterized structural motif used in molecular recognition processes as diverse as signal transduction, cell adhesion, cell development, DNA repair and RNA processing. We present here the crystal structure at 2 ...

    The leucine-rich repeat is a recently characterized structural motif used in molecular recognition processes as diverse as signal transduction, cell adhesion, cell development, DNA repair and RNA processing. We present here the crystal structure at 2.5 A resolution of the complex between ribonuclease A and ribonuclease inhibitor, a protein built entirely of leucine-rich repeats. The unusual non-globular structure of ribonuclease inhibitor, its solvent-exposed parallel beta-sheet and the conformational flexibility of the structure are used in the interaction; they appear to be the principal reasons for the effectiveness of leucine-rich repeats as protein-binding motifs. The structure can serve as a model for the interactions of other proteins containing leucine-rich repeats with their ligands.


    Related Citations: 
    • Mechanism of Ribonuclease Inhibition by Ribonuclease Inhibitor Protein Based on the Crystal Structure of its Complex with Ribonuclease A
      Kobe, B., Deisenhofer, J.
      () To be published --: --
    • Complex between Bovine Ribonuclease A and Porcine Ribonuclease Inhibitor Crystallizes in a Similar Unit Cell as Free Ribonuclease Inhibitor
      Kobe, B., Ma, Z., Deisenhofer, J.
      (1994) J Mol Biol 241: 288

    Organizational Affiliation

    Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas 75235-9050.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RIBONUCLEASE AE124Bos taurusMutation(s): 0 
Gene Names: RNASE1RNS1
EC: 3.1.27.5 (PDB Primary Data), 4.6.1.18 (UniProt)
Find proteins for P61823 (Bos taurus)
Explore P61823 
Go to UniProtKB:  P61823
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
RIBONUCLEASE INHIBITORI457Sus scrofaMutation(s): 0 
Gene Names: RNH1RIRNH
Find proteins for P10775 (Sus scrofa)
Explore P10775 
Go to UniProtKB:  P10775
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
E
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.194 
  • R-Value Observed: 0.194 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 133.3α = 90
b = 133.3β = 90
c = 86.7γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-01-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance