7RSA

STRUCTURE OF PHOSPHATE-FREE RIBONUCLEASE A REFINED AT 1.26 ANGSTROMS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.26 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of phosphate-free ribonuclease A refined at 1.26 A.

Wlodawer, A.Svensson, L.A.Sjolin, L.Gilliland, G.L.

(1988) Biochemistry 27: 2705-2717


  • PubMed Abstract: 
  • The structure of phosphate-free bovine ribonuclease A has been refined at 1.26-A resolution by a restrained least-squares procedure to a final R factor of 0.15. X-ray diffraction data were collected with an electronic position-sensitive detector. The ...

    The structure of phosphate-free bovine ribonuclease A has been refined at 1.26-A resolution by a restrained least-squares procedure to a final R factor of 0.15. X-ray diffraction data were collected with an electronic position-sensitive detector. The final model consists of all atoms in the polypeptide chain including hydrogens, 188 water sites with full or partial occupancy, and a single molecule of 2-methyl-2-propanol. Thirteen side chains were modeled with two alternate conformations. Major changes to the active site include the addition of two waters in the phosphate-binding pocket, disordering of Gln-11, and tilting of the imidazole ring of His-119. The structure of the protein and of the associated solvent was extensively compared with three other high-resolution, refined structures of this enzyme.


    Related Citations: 
    • The Refined Crystal Structure of Ribonuclease A at 2.0 Angstroms Resolution
      Wlodawer, A.,Bott, R.,Sjolin, L.
      (1982) J.Biol.Chem. .257: 1325
    • Comparison of Two Independently Refined Models of Ribonuclease A
      Wlodawer, A.,Borkakoti, N.,Moss, D.S.,Howlin, B.
      (1986) Acta Crystallogr.,Sect.B 42: 379
    • Multiple Conformations of Amino Acid Residues in Ribonuclease A
      Svensson, L.A.,Sjolin, L.,Gilliland, G.L.,Finzel, B.C.,Wlodawer, A.
      (1986) Proteins 1: 370


    Organizational Affiliation

    Center for Chemical Physics, National Bureau of Standards, Gaithersburg, Maryland 20899.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBONUCLEASE A
A
124Bos taurusMutation(s): 0 
Gene Names: RNASE1 (RNS1)
EC: 3.1.27.5
Find proteins for P61823 (Bos taurus)
Go to Gene View: RNASE1
Go to UniProtKB:  P61823
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TBU
Query on TBU

Download SDF File 
Download CCD File 
A
TERTIARY-BUTYL ALCOHOL
2-METHYL-2-PROPANOL
C4 H10 O
DKGAVHZHDRPRBM-UHFFFAOYSA-N
 Ligand Interaction
DOD
Query on DOD

Download SDF File 
Download CCD File 
A
DEUTERATED WATER
D2 O
XLYOFNOQVPJJNP-ZSJDYOACSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.26 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 30.180α = 90.00
b = 38.400β = 105.85
c = 53.320γ = 90.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1988-10-09
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance