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Characterization of nucleotide sequences that interact with a nuclear protein fraction in rRNA gene of Vicia faba.

Abstract：

:A certain nucleotide sequence in the promoter region of Vicia faba rRNA genes that specifically binds to a nuclear protein fraction has been identified by using a gel retardation assay and DNase I footprinting technique. The binding site of this protein fraction is located about 60 bp upstream from the initiation site of the pre-rRNA transcript. This location does not correspond with previously reported results on maize rRNA genes. However, both of the binding sites share a bi-partite consensus sequence, TAT-G(N)xCAGG. Methylation interference experiments show that two G residues in TATG and the complementary strand of CAGG are important for specific DNA-protein interaction. Furthermore, competition analyses using point-mutated synthetic DNAs show that two G residues in CAGG are essential for this interaction. Similar sequences are found in promoter regions of other plant and animal rRNA genes. We suggest that these sequences may be a cis-control element commonly involved in rRNA transcription.

journal_name

Plant Mol Biol

journal_title

Plant molecular biology

authors

Nakajima T,Suzůki A,Tanifuji S,Kato A

doi

10.1007/BF00027164

subject

Has Abstract

pub_date

1992-12-01 00:00:00

pages

939-49

issue

5

eissn

0167-4412

issn

1573-5028

journal_volume

20

pub_type

杂志文章

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