Previously, we purified a protein with a molecular mass of 10 kDa (p10) that increases transiently during the regeneration of legs in the nymphal American cockroach Periplaneta americana, and showed that it is localized exclusively in the cytosol and on the external side of the newly formed epidermis of the regenerating legs [Nomura, A. et al. (1992) Int.… (More)
A gene expressed preferentially in the mushroom bodies of the brain of the worker honeybee Apis mellifera L. was identified by the differential display method and its cDNA was isolated. The cDNA fragment of 534 bp (clone A1) contained an open reading frame encoding 177 amino acid residues having 78, 72, 70, 59 and 55% sequence identities with the inositol… (More)
We have previously used the differential display method to identify a gene that is expressed preferentially in the mushroom bodies of worker honeybees and to show that it encodes a putative inositol 1,4,5-trisphosphate receptor (IP3R) homologue (Kamikouchi et al.  Biochem. Biophys. Res. Commun. 242:181-186). In the present study, we examined whether… (More)
Previously, we identified two proteins with molecular masses of 200 and 210 kDa in basement membranes of Sarcophaga imaginal discs as substrates for cathepsin L [Homma, K. and Natori, S. (1996) Eur. J. Biochem. 240, 443-447]. Here we demonstrated that the same proteins were also present in the basement membranes of larval brains. These proteins were… (More)
The granins, known to be general constituents of neuroendocrine secretory granules, are regulators of the proteolytic processing of peptide precursors and promote their aggregation-mediated sorting into secretory granules.
Two insect defencins, sapecin and sapecin B, were chemically synthesized to confirm their structure and antibacterial activity and also to examine the possibility that these peptides bind to the same site on the large conductance calcium-activated potassium channel as charybdotoxin. Both synthetic peptides showed the same antibacterial activity as native… (More)
Proliferation and apoptosis of neural cells were found to be induced simultaneously when larval brains of Sarcophaga peregrina were cultured in the presence of 20-hydroxyecdysone (20-HE) for 24 h. The locations of proliferating cells and apoptotic cells in the brain hemispheres were different. The morphology of brains exposed to 20-HE for a short period… (More)