Learn More
The adult male accessory glands of D. melanogaster synthesize and secrete a peptide that represses female sexual receptivity and stimulates oviposition. Normally, this peptide is transferred to females during copulation; however, the peptide shows the same biological activity after purification and subsequent injection into the abdominal cavity of female(More)
Sex peptide, a secreted component of the male accessory glands, has been shown to induce behavioral and physiological changes in mated Drosophila. We transformed flies with a hybrid gene containing an hsp70 promoter fused to a cDNA encoding sex peptide. Heat-induced ectopic expression of the peptide in transgenic virgin females altered their reproductive(More)
Male accessory glands of Drosophila funebris synthesize and secrete a peptide that shows a protease-inhibiting activity. Amino acid sequencing of the purified peptide revealed that the peptide consists of 63 amino acid residues. It is a serine protease inhibitor belonging to the pancreatic trypsin inhibitor (Kunitz) family. The inhibitory function and the(More)
A ninhydrin-positive compound with presumptive hormonal activity, previously considered to be a peptide (Chen, P.S., and Bühler, R. (1970), J. Insect Physiol. 16, 615), has been isolated from adult male Drosophila melanogaster. Chromatographic analysis of the acid-hydrolyzed material revealed the presence of ethanolamine, phosphorus, galactose, and(More)
The spermatophore of the silkmoth,Bombyx mori, is a reactor with a specific energy-yielding system for sperm maturation, the arginine degradation cascade. On mating, the highly viscous secretions from various glands in the male reproductive tract, which contain many enzymes and their substrates, are transferred to the female bursa (b.) copulatrix to form(More)
Recent results from biochemical and molecular genetic studies of the accessory gland proteins in male Drosophila are reviewed. The most prominent feature is the species-specific variability. However, the analysis of the sex peptide in D. melanogaster shows that there is a strong homology in the molecular structure to the closely related sibling species, and(More)
Many investigations of the biosynthesis of ribosomes have revealed that ribosome numbers increase with growth rate in a parallel fashion. However, we have now shown that there is also a need for active ribosome synthesis in a nonmitotic tissue which is induced to secrete. The paragonial glands of Drosophila melanogaster produce and secrete proteins that are(More)