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Open Access Green as soon as Postprint is submitted to ZB.
Genome-wide in silico mapping of scaffold/matrix attachment regions in Arabidopsis suggests correlation of intragenic scaffold/matrix attachment regions with gene expression.
Plant Physiol. 135, 715-722 (2004)
We carried out a genome-wide prediction of scaffold/matrix attachment regions (S/MARs) in Arabidopsis. Results indicate no uneven distribution on the chromosomal level but a clear underrepresentation of S/MARs inside genes. In cases where S/MARs were predicted within genes, these intragenic S/MARs were preferentially located within the 5'-half, most prominently within introns 1 and 2. Using Arabidopsis whole-genome expression data generated by the massively parallel signature sequencing methodology, we found a negative correlation between S/MAR-containing genes and transcriptional abundance. Expressed sequence tag data correlated the same way with S/MAR-containing genes. Thus, intragenic S/MARs show a negative correlation with transcription level. For various genes it has been shown experimentally that S/MARs can function as transcriptional regulators and that they have an implication in stabilizing expression levels within transgenic plants. On the basis of a genome-wide in silico S/MAR analysis, we found a significant correlation between the presence of intragenic S/MARs and transcriptional down-regulation.
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Publication type
Article: Journal article
Document type
Scientific Article
ISSN (print) / ISBN
0032-0889
e-ISSN
1532-2548
Journal
Plant Physiology
Quellenangaben
Volume: 135,
Issue: 2,
Pages: 715-722
Publisher
American Society of Plant Biologists (ASPB)
Reviewing status
Peer reviewed