Journal
BIOESSAYS
Volume 39, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/bies.201600095
Keywords
CFP1/Spp1; chromatin; H3K4me3; methylation; Set1; transcription; transcription activation
Categories
Funding
- Wellcome Trust [WT089156MA, 097302/Z/11/Z]
- BBSRC [BB/J001694/1]
- EPA Cephalosporin Trust Fund
- Medical Research Fund, University of Oxford
- Wellcome Trust [097302/Z/11/Z] Funding Source: Wellcome Trust
- BBSRC [BB/J001694/2, BB/J001694/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/J001694/1, BB/J001694/2] Funding Source: researchfish
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Tri-methylation of lysine 4 on histone H3 (H3K4me3) is a near-universal chromatin modification at the transcription start site of active genes in eukaryotes from yeast to man and its levels reflect the amount of transcription. Because of this association, H3K4me3 is often described as an activating histonemodification and assumed to have an instructive role in the transcription of genes, but the field is lacking a conserved mechanism to support this view. The overwhelming finding from genome-wide studies is that actually very little transcription changes upon removal of most H3K4me3 under steady-state or dynamically changing conditions, including at mammalian CpG island promoters. Instead, rather than a major role in instructing transcription, time-resolved experiments provide more evidence supporting the deposition of H3K4me3 into chromatin as a result of transcription, influencing processes such as memory of previous states, transcriptional consistency between cells in a population and transcription termination.
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