Isolation and expression of an ecdysteroid-inducible neutral endopeptidase 24.11-like gene in wing discs of Bombyx mori
2001
Zhao, X. | Mita, K. | Shimada, T. | Okano, K. | Quan, G.X. | Kanke, E. | Kawasaki, H.
In the process of comparison of two cDNA libraries (W0, W2), we isolated a clone from the wing discs of Bombyx mori encoding a putative neutral endopeptidase 24.11-like gene. The predicted open reading frame encoded 772 amino acid residues, having about 53% identity with Drosophila GH07643, 36% with rat NEP, and 34% with rat ECE. This is the first NEP gene isolated in invertebrate. A 3.6-kb transcript was found to accumulate in the wing disc according to the increase of ecdysteroid titer during metamorphosis. Accumulation of the transcript was induced in wing discs with 20-hydroxyecdysone about 20 h after incubation, which was inhibited by cycloheximide. This gene is ecdysone-inducible, appears to encode a functional protein, and may function during wing metamorphosis.
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