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Specific binding ofNicotiana nuclear protein(s) to subterminal regions of theAc transposable element was detected using gel mobility shift assays. A sequence motif (GGTAAA) repeated in both terminal regions ofAc, was identified as the protein binding site. Mutation of two nucleotides in this motif was sufficient to abolish binding. Based on a series of(More)
The Ac-encoded transposase, a factor that is essential for the mobility of the Ac element, is expressed under the control of a promoter that lacks a conventional TATA box. The regulation of this promoter is poorly understood. We have analyzed Ac promoter structure and activity, both in vitro and in vivo, using transgenic tobacco plants and cell suspensions.(More)
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