A 1.3kb fragment of per 5' flanking region, a short hsp70 activation sequence and a 2kb per 3' UTR region regulate expression of a per cDNA, tagged with Tag:HA at the C-terminus.
perTag:HA rescues per01
perT:Ivir\HA1 is able to restore robust and largely temperature compensated behavioral rhythms to per01 flies, both in LD and DD conditions.