Terminal patterning of the Drosophila embryo is thought to be regulated by local cleavage of the ubiquitous peptide hormone Trunk (Trk) controlled by the maternal gene torso-like (tsl)that is expressed only at embryo poles. Here, the authors show that cleavage of Trk is indeed required for patterning and can occur independently of Tsl.
- Michelle A. Henstridge
- Travis K. Johnson
- James C. Whisstock