Included within a 7.5kb fragment of genomic DNA that includes the Scm transcription unit plus approximately 2kb of 5' upstream DNA and 1.5kb DNA downstream of the polyA site.
Rescues the lethality of Scm4/ScmET50, though the rescued flies are not healthy enough to maintain a stock, and adults show homeotic phenotypes such as extra sex combs and wing-to-haltere transformations.