Genomic DNA has been re-integrated into the attP site in the TI{TI}ppkattP-KO insertion, reconstituting a wild-type ppk locus that is tagged at an extracellular site (in between residues Asn171 and Ile172) with three copies of the spGFP11 split fluorescent fragment (the tag is flanked on both sides by a GGS(x4) linker).