Introns and their positions affect the translational activity of mRNA in plant cells.

Abstract:

:In an attempt to further increase transgene expression levels in plants over and above the enhancement obtained with a 5' untranslated leader intron, three different maize introns were inserted at three different positions within the coding sequence of the luciferase reporter gene. Constructs were transformed into maize (Black Mexican Sweet) cells and protoplasts, and their activity determined. Although all introns tested were correctly spliced, only one of them in a particular position was able to enhance gene expression. Correct splicing sites were used for intron removal and the quantity of luciferase mRNA produced did not differ significantly. These data indicate that both the position and the sequence of an intron have marked effects on expression levels, suggesting that nuclear processing of the pre-mRNA determines final expression levels through the structure of the mRNP.

journal_name

EMBO Rep

journal_title

EMBO reports

authors

Bourdon V,Harvey A,Lonsdale DM

doi

10.1093/embo-reports/kve090

keywords:

subject

Has Abstract

pub_date

2001-05-01 00:00:00

pages

394-8

issue

5

eissn

1469-221X

issn

1469-3178

pii

2/5/394

journal_volume

2

pub_type

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