1RN1

THREE-DIMENSIONAL STRUCTURE OF GLN 25-RIBONUCLEASE T1 AT 1.84 ANGSTROMS RESOLUTION: STRUCTURAL VARIATIONS AT THE BASE RECOGNITION AND CATALYTIC SITES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Work: 0.144 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Three-dimensional structure of Gln25-ribonuclease T1 at 1.84-A resolution: structural variations at the base recognition and catalytic sites.

Arni, R.K.Pal, G.P.Ravichandran, K.G.Tulinsky, A.Walz Jr., F.G.Metcalf, P.

(1992) Biochemistry 31: 3126-3135


  • PubMed Abstract: 
  • The structure of the Gln25 variant of ribonuclease T1 (RNase T1) crystallized at pH 7 and at high ionic strength has been solved by molecular replacement using the coordinates of the Lys25-RNase T1/2'-guanylic acid (2'GMP) complex at pH 5 [Arni et al ...

    The structure of the Gln25 variant of ribonuclease T1 (RNase T1) crystallized at pH 7 and at high ionic strength has been solved by molecular replacement using the coordinates of the Lys25-RNase T1/2'-guanylic acid (2'GMP) complex at pH 5 [Arni et al. (1988) J. Biol. Chem. 263, 15358-15368] and refined by energy minimization and stereochemically restrained least-squares minimization to a crystallographic R-factor of 14.4% at 1.84-A resolution. The asymmetric unit contains three molecules, and the final model consists of 2302 protein atoms, 3 sulfates (at the catalytic sites), and 179 solvent water molecules. The estimated root mean square (rms) error in the coordinates is 0.15 A, and the rms deviation from ideality is 0.018 A for bond lengths and 1.8 degrees for bond angles. Significant differences are observed between the three molecules in the asymmetric unit at the base recognition and catalytic sites.


    Related Citations: 
    • Restrained Least-Squares Refinement of the Crystal Structure of the Ribonuclease T1 2'-Guanylic Acid Complex at 1.9 Angstroms Resolution
      Arni, R.,Heinemann, V.,Maslowska, M.,Tokuoka, R.,Saenger, W.
      (1987) Acta Crystallogr.,Sect.B 43: 548
    • Crystal Structure of Guanosine-Free Ribonuclease T1, Complexed with Vanadate(V), Suggests Conformational Change Upon Substrate Binding
      Kostrewa, D.,Choe, H.-W.,Heinemann, U.,Saenger, W.
      (1989) Biochemistry 28: 7592
    • Crystallization of Ribonuclease T1
      Martin, P.O.,Tulinsky, A.,Walz, F.G.
      (1980) J.Mol.Biol. 136: 95
    • Three Dimensional Structures of the Ribonuclease T1 2'-Gmp Complex at 1.9 Angstroms Resolution
      Arni, R.,Heinemann, U.,Tokuoka, R.,Saenger, W.
      (1988) J.Biol.Chem. 263: 15358
    • Structure and Function of the Enzyme Ribonuclease T1
      Arni, R.,Heinemann, U.,Saenger, W.
      (1987) Fresenius Z.Anal.Chem. 327: 67


    Organizational Affiliation

    European Molecular Biology Laboratory, Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBONUCLEASE T1 ISOZYME
A, B, C
104Aspergillus oryzae (strain ATCC 42149 / RIB 40)Mutation(s): 0 
Gene Names: rntA
EC: 3.1.27.3
Find proteins for P00651 (Aspergillus oryzae (strain ATCC 42149 / RIB 40))
Go to UniProtKB:  P00651
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Work: 0.144 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 91.710α = 90.00
b = 37.540β = 90.00
c = 77.670γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
PROLSQrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other