A truncated mam open reading frame, ending at nucleotide 5446, is driven under the control of UASt sequences. A small carboxy terminal segment of the protein that includes most of the second acidic cluster is removed.
wing, with Scer\GAL4bbg-C96
When mamN.Scer\UAS is driven by Scer\GAL4C96 wing nicks are occasionally seen at low penetrance.