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A large region controls tRNA gene transcription.

Abstract：

:We find that tRNA gene transcription is controlled by a region much larger than the previously described internal segments known as A and B boxes. In a Bombyx mori silkworm tRNA2Ala gene, transcriptionally important sequences extend at least from -13 to +146, and thus include sequences both upstream and downstream from the 98 base-pair primary transcription unit. We show that the apparent size of this control region can be manipulated by the conditions used to measure transcription in vitro. Specifically, the use of high concentrations of templates to overcome the effect of an inhibitory substance in crude extracts can make the control region appear smaller. We propose that this finding explains much of the observed variability in the sequence requirements for transcription of different tRNA genes. If so, large size is likely to be a general feature of tRNA gene control regions.

journal_name

J Mol Biol

journal_title

Journal of molecular biology

authors

Wilson ET,Larson D,Young LS,Sprague KU

doi

10.1016/0022-2836(85)90209-8

subject

Has Abstract

pub_date

1985-05-25 00:00:00

pages

153-63

issue

2

eissn

0022-2836

issn

1089-8638

pii

0022-2836(85)90209-8

journal_volume

183

pub_type

杂志文章

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