UAS regulatory sequences drive expression of full-length Antp, with the naturally occurring short linker (4 amino acid residues) between the YPWM motif and the homeodomain.
Expression of AntpScer\UAS.YPWM.SL under the control of Scer\GAL4nullo.PG results in transformation of head to mesothorax. The mutant embryos show head involution defects and repression of the prothoracic beard.