Kinetic properties of a sex pheromone-degrading enzyme: the sensillar esterase of Antheraea polyphemus.
AUTOR(ES)
Vogt, R G
RESUMO
Behavioral and electrophysiological evidence has suggested that sex pheromone is rapidly inactivated within the sensory hairs soon after initiation of the action-potential spike. We report the isolation and characterization of a sex-pheromone-degrading enzyme from the sensory hairs of the silkmoth Antheraea polyphemus. In the presence of this enzyme at physiological concentration, the pheromone [(6E,11Z)-hexadecadienyl acetate] has an estimated half-life of 15 msec. Our findings suggest a molecular model for pheromone reception in which a previously reported pheromone-binding protein acts as a pheromone carrier, and an enzyme acts as a rapid pheromone inactivator, maintaining a low stimulus noise level within the sensory hairs.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=391531Documentos Relacionados
- Pheromone anosmia in a scarab beetle induced by in vivo inhibition of a pheromone-degrading enzyme
- Serum bactericidal activity in the horseshoe crab, Limulus polyphemus.
- Presence of microorganisms in hemolymph of the horseshoe crab Limulus polyphemus.
- Opsins from the lateral eyes and ocelli of the horseshoe crab, Limulus polyphemus.
- A Nonproteolytic “Trypsin-like” Enzyme: Purification and Properties of Arachain 1