Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.

Repression of transcription of ribosomal DNA by altering the structure of chromatin.

The modification of histones by removal of methyl groups.

The modification of histones by removal of methyl groups.

The modification of histone H3 by the removal of a methyl group from lysine at position 4 of the histone.

Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.

Any process that modulates the rate, frequency, or extent of chromosome condensation, the progressive compaction of dispersed interphase chromatin into threadlike chromosomes prior to mitotic or meiotic nuclear division, or during apoptosis, in eukaryotic cells.

The chemical reactions and pathways resulting in the breakdown of antisense transcripts, i.e. transcripts that were produced from the antisense strand of a gene that produces a gene product and which often have a regulatory effect on the transcription of that gene product.

Any process that modulates the frequency, rate or extent of chromatin organization.

Any process that stops, prevents or reduces the frequency, rate or extent of ncRNA transcription associated with protein coding gene TSS/TES.

A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.