- The sap47 gene of Drosophila melanogaster codes for a novel conserved neuronal protein associated with synaptic terminals. Reichmuth, C., Becker, S., Benz, M., Debel, K., Reisch, D., Heimbeck, G., Hofbauer, A., Klagges, B., Pflugfelder, G.O., Buchner, E. Brain Res. Mol. Brain Res. (1995)