An Hsp70 promoter drives expression of a dominant-negative form of kuz. The Pro-domain and metalloprotease domain are deleted, leaving the signal peptide, disintegrin domain, Cys-rich domain, transmembrane domain and intracellular domain intact.
60 minute heat shock at 37oC in the third larval instar causes extra macrochaetes in the notum and during early pupal stages causes ectopic microchaetes.