Try29F, a new member of the Drosophila trypsin-like protease gene family, is specifically expressed in the posterior embryonic midgut.

The Drosophila melanogaster try29F gene encodes a protein that shares all known features of serine proteases, like residues known to be involved in substrate specificity, catalysis and disulfide bond formation. In situ hybridization to mRNA in whole mount embryos shows that the expression of try29F is restricted to the posterior midgut during late embryogenesis.