1T50

NMR SOLUTION STRUCTURE OF APLYSIA ATTRACTIN


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: VTF VALUES 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

NMR Solution Structure of Attractin, a Water-Borne Pheromone from the Mollusk Aplysia Attractin

Ravindranath, G.Xu, Y.Schein, C.H.Rajarathnam, K.Nagle, G.T.Painter, S.D.Braun, W.

(2003) Biochemistry 42: 9970-9979

  • DOI: 10.1021/bi0274322
  • Primary Citation of Related Structures:  
    1T50

  • PubMed Abstract: 
  • Water-borne protein pheromones are essential for coordination of reproductive activities in many marine organisms. In this paper, we describe the first structure of a pheromone protein from a marine organism, that of attractin (58 residues) from Aply ...

    Water-borne protein pheromones are essential for coordination of reproductive activities in many marine organisms. In this paper, we describe the first structure of a pheromone protein from a marine organism, that of attractin (58 residues) from Aplysia californica. The NMR solution structure was determined from TOCSY, NOESY, and DQF-COSY measurements of recombinant attractin expressed in insect cells. The sequential resonance assignments were done with standard manual procedures. Approximately 90% of the 949 unambiguous NOESY cross-peaks were assigned automatically with simultaneous three-dimensional structure calculation using our NOAH/DIAMOD/FANTOM program suite. The final bundle of energy-refined structures is well-defined, with an average rmsd value to the mean structure of 0.72 +/- 0.12 A for backbone and 1.32 +/- 0.11 A for heavy atoms for amino acids 3-47. Attractin contains two antiparallel helices, made up of residues Ile9-Gln16 and I30-S36. The NMR distance constraints are consistent with the three disulfide bonds determined by mass spectroscopy (C4-C41, C13-C33, and C20-C26), where the first two could be directly determined from NOESY cross-peaks between CH beta protons of the corresponding cysteines. The second helix contains the (L/I)(29)IEECKTS(36) sequence conserved in attractins from five species of Aplysia that could interact with the receptor. The sequence and structure of this region are similar to those of the recognition helix of the Er-11 pheromone of the unicellular ciliate Euplotes raikovi, suggesting a possible common pathway for intercellular communication of these two distinct pheromone families.


    Related Citations: 
    • Aplysia Attractin: Biophysical Characterization and Modeling of a Water-Borne Pheromone
      Schein, C.H., Nagle, G.T., Page, J.S., Sweedler, J.V., Xu, Y., Painter, S.D., Braun, W.
      (2001) Biophys J 81: 463

    Organizational Affiliation

    Sealy Center for Structural Biology, Department of Human Biological Chemistry and Genetics, University of Texas Medical Branch, Galveston, Texas 77555, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AttractinA58Aplysia californicaMutation(s): 0 
Gene Names: ATT
Find proteins for O96910 (Aplysia californica)
Explore O96910 
Go to UniProtKB:  O96910
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: VTF VALUES 
  • OLDERADO: 1T50 Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-05-11
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance