1ERC

THE NMR SOLUTION STRUCTURE OF THE PHEROMONE ER-1 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-1 from the ciliated protozoan Euplotes raikovi.

Mronga, S.Luginbuhl, P.Brown, L.R.Ortenzi, C.Luporini, P.Bradshaw, R.A.Wuthrich, K.

(1994) Protein Sci. 3: 1527-1536

  • DOI: 10.1002/pro.5560030918

  • PubMed Abstract: 
  • The 3-dimensional structure of the pheromone Er-1 isolated from the ciliated protozoan Euplotes raikovi has been determined in aqueous solution by 1H NMR spectroscopy. The structure of this 40-residue protein was calculated with the distance geometry ...

    The 3-dimensional structure of the pheromone Er-1 isolated from the ciliated protozoan Euplotes raikovi has been determined in aqueous solution by 1H NMR spectroscopy. The structure of this 40-residue protein was calculated with the distance geometry program DIANA on the basis of 503 upper distance constraints derived from nuclear Overhauser effects and 77 dihedral angle constraints derived from spin-spin coupling constants, and refined by restrained energy minimization with the program OPAL. The Er-1 solution structure is represented by a group of 20 conformers with an average RMS deviation relative to the mean structure of 0.55 A for the backbone atoms N, C alpha, and C', and 0.93 A for all heavy atoms of the complete polypeptide chain, residues 1-40. The molecular architecture is dominated by an up-down-up bundle of 3 alpha-helices formed by residues 2-9, 12-19, and 24-33. Although this core part coincides closely with the previously determined structure of the homologous pheromone Er-10, the C-terminal peptide segment adopts a novel conformation. This is of interest in view of previous suggestions, based on sequence comparisons, that this molecular region may be important for the different specificity of receptor recognition by different pheromones.


    Related Citations: 
    • Primary Structure of the Mating Pheromone Er-1 of the Ciliate Euplotes Raikovi
      Raffioni, S.,Luporini, P.,Chait, B.T.,Disper, S.S.,Bradshaw, R.A.
      (1988) J.Biol.Chem. 263: 18152
    • 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-1
A
40Euplotes raikoviGene Names: MAT1, MAT3
Find proteins for P10774 (Euplotes raikovi)
Go to UniProtKB:  P10774
Experimental Data & Validation

Experimental Data

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