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- W1972212144 abstract "An enhancer sequence found in the Protease Nexin-1 (PN-1) gene was shown to drive lacZ expression specifically at the met-/mesencephalic junction in transgenic mouse embryos. A functional study of this enhancer has been performed to better understand the mechanisms regulating isthmic gene expression. An octamer-binding site for POU domain factors was found to be crucial for the activity of the enhancer in vivo. Comparative expression studies of POU domain factors, electrophoretic mobility shift assays and transient transfection experiments, strongly suggest that Brn-1/-2 regulate the enhancer activity in vivo. In addition, in vitro experiments indicated that FGF-8 was required for the maintenance of the enhancer activity, but not for the synthesis of Bn-1/-2. The data represents the first functional evidence for a role of POU factors in the regulation of met-/mesencephalic gene expression. It also implies that at least two regulatory pathways, namely the FGF-8 signaling and the octamer-binding site pathway, synergistically interact to control the PN-1 enhancer activity in vivo." @default.
- W1972212144 created "2016-06-24" @default.
- W1972212144 creator A5034069386 @default.
- W1972212144 creator A5041865248 @default.
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- W1972212144 date "1999-06-01" @default.
- W1972212144 modified "2023-09-25" @default.
- W1972212144 title "An octamer-binding site is crucial for the activity of an enhancer active at the embryonic met-/mesencephalic junction" @default.
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- W1972212144 doi "https://doi.org/10.1016/s0925-4773(99)00067-2" @default.
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