Identification of the first neuropeptides from the CNS of Hemiptera: CAPA peptides of the southern green stinkbug Nezara viridula (L.). Academic Article uri icon

abstract

  • A direct mass spectrometric investigation of nerve homologs of the abdominal perisympathetic organs was employed to reveal the first and complete sequences of CAPA peptides from a hemipteran species, the southern green stinkbug Nezara viridula. Side-chain fragmentations allowed the assignment of internal Leu/Ile; on-plate acetylation was used to distinguish between the mass-related Lys and Gln. The following sequences were obtained: DQLFPFPRV-NH(2) (CAPA-PVK-1), EQLIPFPRV-NH(2) (CAPA-PVK-2), and NGSAGNGGLWFGPRL/I-NH(2) (CAPA-PK). CAPA-PVKs are associated with the regulation of diuresis in insects, and identification of those native to a hemipteran will provide the experimental basis to better understand regulation of water balance in this family of insects.

published proceedings

  • Peptides

author list (cited authors)

  • Predel, R., Russell, W. K., Neupert, S., Russell, D. H., Esquivel, J. F., & Nachman, R. J.

citation count

  • 19

complete list of authors

  • Predel, Reinhard||Russell, William K||Neupert, Susanne||Russell, David H||Esquivel, Jesus F||Nachman, Ronald J

publication date

  • November 2006