Regulation of heterochromatin by histone methylation and small RNAs.
Heterochromatin mediates various nuclear processes including centromere function, gene silencing and nuclear organization. Although it was discovered nearly 75 years ago, the pathways involved in heterochromatin establishment, assembly and epigenetic maintenance have been elusive. Recent reports have demonstrated that distinct and novel chromatin-associated factors, including DNA, RNA and histone modifications, are involved in each of these events. These new findings define a novel conserved mechanism of heterochromatin formation that is likely to have an impact on all eukaryotic silencing pathways.
Grewal
Shiv I S
SI
Laboratory of Molecular Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. grewals@mail.nih.gov
Rice
Judd C
JC
D000818:Animals; D004251:DNA Transposable Elements / Q000235:genetics; D044127:Epigenesis, Genetic; D006570:Heterochromatin / Q000502:physiology*; D006657:Histones / Q000378:metabolism*; D006801:Humans; D008745:Methylation; D008958:Models, Molecular; D034622:RNA Interference; D014158:Transcription, Genetic
D004251:DNA Transposable Elements; D006570:Heterochromatin; D006657:Histones