“…Along with these different proteases, two major classes of secreted inhibitors have been discovered, serine proteases inhibitors (SERPIN) and endopeptidase inhibitors. The D. melanogaster genome contains 29 serpin genes (195)(196)(197) and four of these gene products were identified: Spn38F (Serpin 3), Spn43Ab, Spn55B (Serpin 6) and Spn88Ea (Serpin 5).…”