1AWZ

3D SOLUTION STRUCTURE OF HUMAN ANGIOGENIN DETERMINED BY 1H, 15N NMR SPECTROSCOPY, 30 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Three-dimensional solution structure of human angiogenin determined by 1H,15N-NMR spectroscopy--characterization of histidine protonation states and pKa values.

Lequin, O.Thuring, H.Robin, M.Lallemand, J.Y.

(1997) Eur.J.Biochem. 250: 712-726


  • PubMed Abstract: 
  • Human angiogenin is a member of the pancreatic ribonuclease superfamily that induces blood vessel formation. Its three-dimensional solution structure has been determined to high resolution by heteronuclear NMR spectroscopy. 30 structures were calcula ...

    Human angiogenin is a member of the pancreatic ribonuclease superfamily that induces blood vessel formation. Its three-dimensional solution structure has been determined to high resolution by heteronuclear NMR spectroscopy. 30 structures were calculated, based on a total of 1441 assigned NOE correlations, 64 coupling constants and 50 hydrogen bonds. The backbone atomic rms difference from the mean coordinates is 0.067 +/- 0.012 nm and 0.13 nm from the previously determined crystal structure. The side-chain of Gln117 was found to obstruct the active site as observed in the crystal state. There was no evidence of an alternative open form of angiogenin, although two sets of chemical shifts were observed for some residues, mainly around the active site and in the C-terminal segment. The topology of the ribonucleolytic active site is described with a particular emphasis on the conformation and protonation of active-site His residues. The side-chain of His114 adopts two main conformations in solution. In contrast to pancreatic ribonuclease A, His13 was shown to be more basic than His114, with pKa values of 6.65 and 6.05 respectively. The His47 residue is located in an environment very resistant to protonation with a pKa lower than 4.


    Organizational Affiliation

    D├ępartement de Chimie-Synth├Ęse Organique, URA 1308 du CNRS, Ecole Polytechnique, Palaiseau, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANGIOGENIN
A
123Homo sapiensMutation(s): 0 
Gene Names: ANG (RNASE5)
EC: 3.1.27.-
Find proteins for P03950 (Homo sapiens)
Go to Gene View: ANG
Go to UniProtKB:  P03950
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 
  • Olderado: 1AWZ Olderado
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-02-25
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance