Staiger D et al. 1989
- Authors:
- Title:
A CACGTG motif of the Antirrhinum majus chalcone synthase promoter is
recognized by an evolutionarily conserved nuclear protein.
- Reference location:
Proceedings of the National Academy of Sciences of the United States of
America. 86(18):6930-4, 1989 Sep.
- Abstract:
In the chalcone synthase gene of Antirrhinum majus (snapdragon), 150 base
pairs of the 5' flanking region contain cis-acting signals for UV
light-induced expression. A nuclear factor, designated CG-1, specifically
recognizes a hexameric motif with internal dyad symmetry, CACGTG, located
within this light-responsive sequence. Binding of CG-1 is influenced by
C-methylation of the CpG dinucleotide in the recognition sequence. CG-1 is
a factor found in a variety of dicotyledonous plant species including
Nicotiana tabacum, A. majus, Petunia hybrida, Arabidopsis thaliana, and
Glycine max. CACGTG motifs contained within trans-acting factor
recognition sites in various other plant promoters can interact with CG-1.
In addition, the binding site of the human adenovirus major late
transcription factor USF can compete for CG-1 binding to the chalcone
synthase promoter. This suggests an evolutionary conservation of
trans-acting factor recognition sites involved in divergent mechanisms of
gene control.
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