1K19

NMR Solution Structure of the Chemosensory Protein CSP2 from Moth Mamestra brassicae


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy, target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of a chemosensory protein from the moth Mamestra brassicae

Mosbah, A.Campanacci, V.Lartigue, A.Tegoni, M.Cambillau, C.Darbon, H.

(2003) BIOCHEM.J. 369: 39-44

  • DOI: 10.1042/BJ20021217

  • PubMed Abstract: 
  • Chemosensory proteins (CSPs) are believed to be involved in chemical communication and perception. A number of such proteins, of molecular mass approximately 13 kDa, have been isolated from different sensory organs of a wide range of insect species. ...

    Chemosensory proteins (CSPs) are believed to be involved in chemical communication and perception. A number of such proteins, of molecular mass approximately 13 kDa, have been isolated from different sensory organs of a wide range of insect species. Several CSPs have been identified in the antennae and proboscis of the moth Mamestra brassicae. CSPMbraA6, a 112-amino-acid antennal protein, has been expressed in a soluble form in large quantities in the Escherichi coli periplasm. NMR structure determination of CSPMbraA6 has been performed with 1H- and 15N-labelled samples. The calculated structures present an average root mean square deviation about the mean structure of 0.63 A for backbone atoms and 1.27 A for all non-hydrogen atoms except the 12 N-terminal residues. The protein is well folded from residue 12 to residue 110, and consists of a non-bundle alpha-helical structure with six helices connected by alpha alpha loops. It has a globular shape, with overall dimensions of 32 A x 28 A x 24 A. A channel is visible in the hydrophobic core, with dimensions of 3 A x 9 A x 21 A. In some of the 20 solution structures calculated, this channel is closed either by Trp-94 at one end or by Tyr-26 at the other end; in some other solutions, this channel is closed at both ends. Binding experiments with 12-bromododecanol indicate that the CSPMbraA6 structure is modified upon ligand binding.


    Related Citations: 
    • Chemosensory Protein from the moth Mamestra brassicae. Expression and secondary structure from 1H and 15N NMR
      Campanacci, V.,Mosbah, A.,Bornet, O.,Wechselberger, R.,Jacquin-Joly, E.,Cambillau, C.,Darbon, H.,Tegoni, M.
      (2001) Eur.J.Biochem. 268: 4731


    Organizational Affiliation

    AFMB, UMR 6098-CNRS and Universit├ęs Aix-Marseille I & II, 31 Chemin J. Aiguier, 13402 Marseille Cedex 20, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chemosensory Protein CSP2
A
112Mamestra brassicaeN/A
Find proteins for Q9NG96 (Mamestra brassicae)
Go to UniProtKB:  Q9NG96
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy, target function 
  • Olderado: 1K19 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-12-04
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance