Experimental Data Snapshot

  • Resolution: 1.20 Å

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This is version 1.2 of the entry. See complete history


Ribonuclease from Streptomyces aureofaciens at atomic resolution.

Sevcik, J.Dauter, Z.Lamzin, V.S.Wilson, K.S.

(1996) Acta Crystallogr D Biol Crystallogr 52: 327-344

  • DOI: https://doi.org/10.1107/S0907444995007669
  • Primary Citation of Related Structures:  
    1RGE, 1RGF, 1RGG, 1RGH

  • PubMed Abstract: 

    Crystals of ribonuclease from Streptomyces aureofaciens diffract to atomic resolution at room temperature. Using synchrotron radiation and an imaging-plate scanner, X-ray data have been recorded to 1.20 A resolution from a crystal of native enzyme and to 1.15 A from a crystal of a complex with guanosine-2'-monophosphate. Refinement with anisotropic atomic temperature factors resulted in increased accuracy of the structure. The R factors for the two structures are 10.6 and 10.9%. The estimated r.m.s. error in the coordinates is 0.05 A, less than half that obtained in the previous analysis at 1.7 A resolution. For the well ordered part of the main chain the error falls to below 0.02 A as estimated from inversion of the least-squares matrix. The two independent molecules in the asymmetric unit allowed detailed analysis of peptide planarity and some torsion angles. The high accuracy of the analysis revealed density for a partially occupied anion in the nucleotide binding site of molecule A in the native structure which was not seen at lower resolution. The anisotropic model allowed correction of the identity of the residue at position 72 from cysteine to threonine. Cys72 SG had been modelled in previous analyses with two conformations. The solvent structure was modelled by means of an automated procedure employing a set of objective criteria. The solvent structure for models refined using different programs with isotropic and anisotropic description of thermal motion is compared.

  • Organizational Affiliation

    Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovak Republic.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
96Kitasatospora aureofaciensMutation(s): 0 
Gene Names: rnaSA
EC: (PDB Primary Data), (UniProt)
Find proteins for P05798 (Kitasatospora aureofaciens)
Explore P05798 
Go to UniProtKB:  P05798
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05798
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.20 Å
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.73α = 90
b = 78.56β = 90
c = 38.99γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
ARP/wARPmodel building
SHELXL-93model building

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-10-14
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance