TY  - JOUR
TI  - The 35UZ transposon of Drosophila melanogaster reveals differences in maintenance of transcriptional control between embryonic and larval stages.
AU  - Docquier, F
AU  - Randsholt, N B
AU  - Deutsch, J
AU  - Santamaria, P
T2  - The International Journal of Developmental Biology
AB  - The D. melanogaster transposon P[35UZ] contains a lacZ reporter gene fused to 35 kb of Ubx upstream sequences which drive a Ubx-like expression in embryos and in metathoracic imaginal discs. Transposition of P[35UZ] followed by analysis of different lines in wild-type and mutant backgrounds allowed us to analyze the interplay between Ubx regulatory elements, including the Polycomb response element (PRE), located inside the transposon and cis-acting regulatory elements, located outside. We found that all lines show a Ubx-like beta-galactosidase expression pattern in the embryo, but proximity to strong imaginal enhancers can change this pattern drastically. These data illustrate how maintenance of gene expression depends on the chromosomal environment and on dynamic interactions between all developmentally regulated enhancers located close to a promoter under PcG control.
PY  - 1999
VL  - 43
IS  - 3
SP  - 275
EP  - 278
J2  - Int. J. Dev. Biol.
LA  - en
SN  - 0214-6282
SN  - 1696-3547
UR  - https://ijdb.ehu.eus/article/10410908
Y2  - 2024/11/05/19:24:57
ER  -