NDLI: Promoter-Proximal Introns in Arabidopsis thaliana Are Enriched in Dispersed Signals that Elevate Gene Expression[W] [OA]

Content Provider	PubMed Central
Author	Rose, Alan B. Tali, Elfersi Parra, Genis Korf, Ian
Abstract	Introns that elevate mRNA accumulation have been found in a wide range of eukaryotes. However, not all introns affect gene expression, and direct testing is currently the only way to identify stimulatory introns. Our genome-wide analysis in Arabidopsis thaliana revealed that promoter-proximal introns as a group are compositionally distinct from distal introns and that the degree to which an individual intron matches the promoter-proximal intron profile is a strong predictor of its ability to increase expression. We found that the sequences responsible for elevating expression are dispersed throughout an enhancing intron, as is a candidate motif that is overrepresented in first introns and whose occurrence in tested introns is proportional to its effect on expression. The signals responsible for intron-mediated enhancement are apparently conserved between Arabidopsis and rice (Oryza sativa) despite the large evolutionary distance separating these plants.
Related Links	http://dx.doi.org/10.1105/tpc.107.057190
Ending Page	551
Page Count	9
Starting Page	543
File Format	PDF
ISSN	10404651
e-ISSN	1532298X
Journal	The Plant Cell
Issue Number	3
Volume Number	20
Language	English
Publisher	American Society of Plant Biologists
Publisher Date	2008-03-01
Access Restriction	Open
Rights Holder	American Society of Plant Biologists
Subject Keyword	Plant Science Cell Biology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science

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