A Tag:StrepII-3xTag:FLAG-Tag:StrepII (SFS) multi-tag cassette has been inserted into the endogenous sgg locus, such that it tags the the first coding exon of the PG protein isoform (this also tags isoform PR).
The sgg-PG tag also tags sgg-PR. No strong expression was observed during early stages, but by mid-embryogenesis transient mesoderm expression is seen followed by later expression in the hindgut, foregut and the