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GenomicsPolymerase-IV occupancy at RNA-directed DNA methylation sites requires SHH1
DNA methylation is an epigenetic modification that plays critical roles in gene silencing, development, and the maintenance of genome integrity. In Arabidopsis, DNA methylation is established by DOMAINS REARRANGED METHYLTRANSFERASE 2 (DRM2) and is targeted by 24 nt small interfering RNAs (siRNAs) th...
ORGANISM(S): Arabidopsis thaliana 
2013-05-13 | E-GEOD-45368 | biostudies-arrayexpress
GenomicsDerivation of pre-X inactivation human embryonic stem cells under physiological oxygen concentrations
The presence of two active X chromosomes (XaXa) is a hallmark of the ground state of pluripotency specific to murine embryonic stem cells (ESCs). Human ESCs invariably exhibit signs of X chromosome inactivation (XCI) and are considered developmentally more advanced than their murine counterparts. W...
ORGANISM(S): Homo sapiens 
2010-05-28 | E-GEOD-21141 | biostudies-arrayexpress
GenomicsMORC family ATPases required for heterochromatin condensation and gene silencing
Transposable elements (TEs) and DNA repeats are commonly targeted by DNA and histone methylation to achieve epigenetic gene silencing. We isolated mutations in two Arabidopsis genes, CRT1 and CRH6, which cause de-repression of DNA-methylated genes and TEs, but no losses of DNA or histone methylatio...
ORGANISM(S): Arabidopsis thaliana 
2012-05-02 | E-GEOD-37644 | biostudies-arrayexpress
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