Imprecise excision of P{EP}CTCFGE22007 generates a deletion in CTCF.
abdominal sternite 6 & abdominal sternite bristle
abdominal tergite 7 & abdominal sternite bristle
CTCFP35.2/CTCF9 have pharate adult lethality, with rare escapers that eclose but die within 24-48hr, and show posterior-to-anterior homeotic transformations of abdominal segments A8-A6: in males genitalia is rotated by approximately 20-180[o] (90%), s6 (sternite of the sixth segment) has 4-8 (average 6) bristles; in females s7 has 12-16 (average 14) bristles, shape of s7 transformed toward s6 and bristles lose orientation, and t8 (tergite of the eighth segment) has rows of large bristles.
CTCFy+1/CTCFP35.2 males and females extracted from pupal cases show posterior-to-anterior homeotic transformations of abdominal segments A8-A6: in males genitalia is rotated 90-180[o] (100% penetrance) and s6 has 6-10 (average 8) bristles; in females s7 has 11-14 (average 12) bristles, the shape of s7 is transformed toward s6 and bristles lose orientation, and t8 has rows of large bristles.
CTCFP35.2 mutant salivary glands display dramatic vesiculation of the nucleolar structure.
CTCFP35.2 homozygotes are pharate lethal. Male genitalia are rotated by 40[o]-90[o] in 100% of cases. Males exhibit A4 tergites with patchy pigmentation. A5 tergites show a few white spots, the A5 sternite is elongated into a banana shape. Eight bristles are found on the sixth sternite, and the seventh tergite is smaller than in wild-type. CTCFP35.2 homozygous females exhibit A7 sternites with up to 11 bristles pointing vertically downwards.
CTCFP35.2/CTCFy+1 is rescued by CTCFUbi-p63E.Tag:StrepII
CTCFUbi-p63E.T:Zzzz\StrepII rescues viability of CTCFy+1/CTCFP35.2 flies.