Breakpoint in the 5' flanking sequences 2kb upstream of the transcription start site, perhaps separating sog from a necessary cis-regulatory element.
Reported to have a breakpoint approximately 2 kb upstream from the 5' end of the longest sog cDNA; the region from 1.9-2.1kb upstream is annotated.
Large sog6 mutant clones (generated by the FLP/FRT/Minute technique), that encompass both surfaces of the wing, disrupt the formation of the posterior crossvein (PCV). No other patterning defects are apparent in these wings. Smaller sog6 clones that encompass the central region of the PCV do not disrupt PCV formation.
Mutant embryos have a reduced number of amnioserosa cells.
Significantly rescue haplo-insufficiency of dpp.