1ERD

THE NMR SOLUTION STRUCTURE OF THE PHEROMONE ER-2 FROM THE CILIATED PROTOZOAN EUPLOTES RAIKOVI


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The NMR solution structure of the pheromone Er-2 from the ciliated protozoan Euplotes raikovi.

Ottiger, M.Szyperski, T.Luginbuhl, P.Ortenzi, C.Luporini, P.Bradshaw, R.A.Wuthrich, K.

(1994) Protein Sci. 3: 1515-1526

  • DOI: 10.1002/pro.5560030917

  • PubMed Abstract: 
  • The NMR structure of the pheromone Er-2 from the ciliated protozoan Euplotes raikovi has been determined in aqueous solution. The structure of this 40-residue protein was calculated with the distance geometry program DIANA from 621 distance constrain ...

    The NMR structure of the pheromone Er-2 from the ciliated protozoan Euplotes raikovi has been determined in aqueous solution. The structure of this 40-residue protein was calculated with the distance geometry program DIANA from 621 distance constraints and 89 dihedral angle constraints; the program OPAL was employed for the energy minimization. For a group of 20 conformers used to characterize the solution structure, the average pairwise RMS deviation from the mean structure calculated for the backbone heavy atoms N, C alpha, and C' of residues 3-37 was 0.31 A. The molecular architecture is dominated by an up-down-up bundle of 3 short helices of residues 5-11, 14-20, and 23-33, which is similar to the structures of the homologous pheromones Er-1 and Er-10. Novel structural features include a well-defined N-cap on the first helix, a 1-residue deletion in the second helix resulting in the formation of a 3(10)-helix rather than an alpha-helix as found in Er-1 and Er-10, and the simultaneous presence of 2 different conformations for the C-terminal tetrapeptide segment, i.e., a major conformation with the Leu 39-Pro 40 peptide bond in the trans form and a minor conformation with this peptide bond in the cis form.


    Related Citations: 
    • Primary Structure of Euplotes Raikovi Pheromones: Comparison of Five Sequences of Pheromones from Cells with Variable Mating Interactions
      Raffioni, S.,Miceli, C.,Vallesi, A.,Chowdhury, S.K.,Chait, B.T.,Luporini, P.,Bradshaw, R.A.
      (1992) Proc.Natl.Acad.Sci.USA 89: 2071


    Organizational Affiliation

    Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule, Zürich, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHEROMONE ER-2
A
40Euplotes raikoviMutation(s): 0 
Gene Names: MAT2, MAT9
Find proteins for P26886 (Euplotes raikovi)
Go to UniProtKB:  P26886
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 
  • Olderado: 1ERD Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance