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Histone H3 lysine 4 methylation patterns in higher eukaryotic genes.
Nat. Cell Biol. 6, 73-77 (2004)
Lysine residues within histones can be mono-, di - or tri-methylated. In Saccharomyces cerevisiae tri-methylation of Lys 4 of histone H3 (K4/H3) correlates with transcriptional activity, but little is known about this methylation state in higher eukaryotes. Here, we examine the K4/H3 methylation pattern at the promoter and transcribed region of metazoan genes. We analysed chicken genes that are developmentally regulated, constitutively active or inactive. We found that the pattern of K4/H3 methylation shows similarities to S. cerevisiae. Tri-methyl K4/H3 peaks in the 5' transcribed region and active genes can be discriminated by high levels of tri-methyl K4/H3 compared with inactive genes. However, our results also identify clear differences compared to yeast, as significant levels of K4/H3 methylation are present on inactive genes within the beta-globin locus, implicating this modification in maintaining a 'poised' chromatin state. In addition, K4/H3 di-methylation is not genome-wide and di-methylation is not uniformly distributed throughout the transcribed region. These results indicate that in metazoa, di- and tri-methylation of K4/H3 is linked to active transcription and that significant differences exist in the genome-wide methylation pattern as compared with S. cerevisiae.
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Publication type
Article: Journal article
Document type
Scientific Article
ISSN (print) / ISBN
1465-7392
e-ISSN
1476-4679
Journal
Nature Cell Biology
Quellenangaben
Volume: 6,
Issue: 1,
Pages: 73-77
Publisher
Nature Publishing Group
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Functional Epigenetics (IFE)