These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A novel adipokinetic octapeptide found in the damselflies Pseudagrion inconspicuum and Ischnura senegalensis.
    Author: Janssens MP, Kellner R, Gde G.
    Journal: Biochem J; 1994 Sep 01; 302 ( Pt 2)(Pt 2):539-43. PubMed ID: 8093008.
    Abstract:
    A member of the adipokinetic hormone family of peptide was identified in the damselflies Pseudagrion inconspicuum and Ischnura senegalensis using a heterologous (in migratory locusts and American cockroaches) and a homologous (in P. inconspicuum) bioassay. After isolation of the peptide by reversed-phase h.p.i.c. of corpora cardiaca, its structure was determined by automated Edman degradation and matrix-assisted laser-desorption ionization m.s. The sequence of a blocked uncharged octapeptide was established: pGlu-Val-Asn-Phe-Thr-Pro-Gly-TrpNH2. One corpus cardiacum of P. inconspicuum contains about 2.4 pmol of this novel peptide. The synthetic peptide was chromatographically indistinguishable from the natural compound, and on injection in low quantities into the damselfly P. inconspicuum, haemolymph levels of lipids were increased. It is concluded that the novel peptide may be involved in controlling lipid mobilization during flight. Hence the peptide is designated Psi-AKH, Pseudagrion inconspicuum adipokinetic hormone.
    [Abstract] [Full Text] [Related] [New Search]