1GV7

ARH-I, an angiogenin/RNase A chimera


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.220 

wwPDB Validation 3D Report Full Report



Literature

Guest-Host Crosstalk in an Angiogenin-RNase A Chimeric Protein

Holloway, D.E.Shapiro, R.Hares, M.C.Leonidas, D.D.Acharya, K.R.

(2002) Biochemistry 41: 10482

  • DOI: 10.1021/bi026151r
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Angiogenin and ribonuclease A share 33% sequence identity but have distinct functions. Angiogenin is a potent inducer of angiogenesis that is only weakly ribonucleolytic, whereas ribonuclease A is a robust ribonuclease that is not angiogenic. A chime ...

    Angiogenin and ribonuclease A share 33% sequence identity but have distinct functions. Angiogenin is a potent inducer of angiogenesis that is only weakly ribonucleolytic, whereas ribonuclease A is a robust ribonuclease that is not angiogenic. A chimera ("ARH-I"), in which angiogenin residues 58-70 are replaced with residues 59-73 of ribonuclease A, has intermediate ribonucleolytic potency and no angiogenic activity. Here we report a crystal structure of ARH-I that reveals the molecular basis for these characteristics. The ribonuclease A-derived (guest) segment adopts a structure largely similar to that in ribonuclease A, and successfully converts this region from a cell-binding site to a purine-binding site. At the same time, its presence causes complex changes in the angiogenin-derived (host) portion that account for much of the increased ribonuclease activity of ARH-I. Guest-host interactions of this type probably occur more generally in protein chimeras, emphasizing the importance of direct structural information for understanding the functional behavior of such molecules.


    Organizational Affiliation

    Department of Biology and Biochemistry, South Building, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANGIOGENIN
A
123Homo sapiensBos taurusMutation(s): 0 
EC: 3.1.27.5 (PDB Primary Data), 4.6.1.18 (UniProt), 3.1.27 (UniProt)
Find proteins for P03950 (Homo sapiens)
Go to UniProtKB:  P03950
NIH Common Fund Data Resources
PHAROS  P03950
Find proteins for P61823 (Bos taurus)
Go to UniProtKB:  P61823
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CIT
Query on CIT

Download CCD File 
A
CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
A
L-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.220 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.547α = 90
b = 64.199β = 90
c = 61.25γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-08-22
    Type: Initial release
  • Version 1.1: 2017-03-15
    Changes: Source and taxonomy
  • Version 1.2: 2019-03-06
    Changes: Data collection, Derived calculations, Experimental preparation
  • Version 1.3: 2019-03-13
    Changes: Data collection, Database references, Experimental preparation
  • Version 2.0: 2020-03-11
    Changes: Polymer sequence