Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Chromatin> ?p ?o }
- Chromatin abstract "Chromatin is a complex of macromolecules found in cells, consisting of DNA, protein and RNA. The primary functions of chromatin are 1) to package DNA into a smaller volume to fit in the cell, 2) to reinforce the DNA macromolecule to allow mitosis, 3) to prevent DNA damage, and 4) to control gene expression and DNA replication. The primary protein components of chromatin are histones that compact the DNA. Chromatin is only found in eukaryotic cells (cells with defined nuclei). Prokaryotic cells have a different organization of their DNA (the prokaryotic chromosome equivalent is called genophore and is localized within the nucleoid region).The structure of chromatin depends on several factors. The overall structure depends on the stage of the cell cycle. During interphase, the chromatin is structurally loose to allow access to RNA and DNA polymerases that transcribe and replicate the DNA. The local structure of chromatin during interphase depends on the genes present on the DNA: DNA coding genes that are actively transcribed ("turned on") are more loosely packaged and are found associated with RNA polymerases (referred to as euchromatin) while DNA coding inactive genes ("turned off") are found associated with structural proteins and are more tightly packaged (heterochromatin). Epigenetic chemical modification of the structural proteins in chromatin also alters the local chromatin structure, in particular chemical modifications of histone proteins by methylation and acetylation. As the cell prepares to divide, i.e. enters mitosis or meiosis, the chromatin packages more tightly to facilitate segregation of the chromosomes during anaphase. During this stage of the cell cycle this makes the individual chromosomes in many cells visible by optical microscope.In general terms, there are three levels of chromatin organization: DNA wraps around histone proteins forming nucleosomes; the "beads on a string" structure (euchromatin). Multiple histones wrap into a 30 nm fibre consisting of nucleosome arrays in their most compact form (heterochromatin). (Definitively established to exist in vitro, the 30-nanometer fibre was not seen in recent X-ray studies of human mitotic chromosomes.) Higher-level DNA packaging of the 30 nm fibre into the metaphase chromosome (during mitosis and meiosis).There are, however, many cells that do not follow this organisation. For example, spermatozoa and avian red blood cells have more tightly packed chromatin than most eukaryotic cells, and trypanosomatid protozoa do not condense their chromatin into visible chromosomes for mitosis.".
- Chromatin thumbnail Chromatin_Structures.png?width=300.
- Chromatin wikiPageExternalLink 134.pdf.
- Chromatin wikiPageExternalLink www.chromatin.co.uk.
- Chromatin wikiPageExternalLink chromatin-patterns-at-transcription-factor-binding-sites.
- Chromatin wikiPageExternalLink A620.
- Chromatin wikiPageExternalLink watch?v=eYrQ0EhVCYA.
- Chromatin wikiPageID "6933".
- Chromatin wikiPageLength "27555".
- Chromatin wikiPageOutDegree "119".
- Chromatin wikiPageRevisionID "683191350".
- Chromatin wikiPageWikiLink Aaron_Klug.
- Chromatin wikiPageWikiLink Acetylation.
- Chromatin wikiPageWikiLink Adenine.
- Chromatin wikiPageWikiLink Albrecht_Kossel.
- Chromatin wikiPageWikiLink Anaphase.
- Chromatin wikiPageWikiLink Arginine.
- Chromatin wikiPageWikiLink Bird.
- Chromatin wikiPageWikiLink Bivalent_chromatin.
- Chromatin wikiPageWikiLink Bookmarking.
- Chromatin wikiPageWikiLink Category:Molecular_genetics.
- Chromatin wikiPageWikiLink Category:Nuclear_substructures.
- Chromatin wikiPageWikiLink Cell_(biology).
- Chromatin wikiPageWikiLink Cell_cycle.
- Chromatin wikiPageWikiLink Cell_nucleus.
- Chromatin wikiPageWikiLink Chromatid.
- Chromatin wikiPageWikiLink Chromatosome.
- Chromatin wikiPageWikiLink Chromitosis.
- Chromatin wikiPageWikiLink Chromosome.
- Chromatin wikiPageWikiLink Cytosine.
- Chromatin wikiPageWikiLink DNA.
- Chromatin wikiPageWikiLink DNA_repair.
- Chromatin wikiPageWikiLink Epigenetic.
- Chromatin wikiPageWikiLink Epigenetics.
- Chromatin wikiPageWikiLink Euchromatin.
- Chromatin wikiPageWikiLink Eukaryote.
- Chromatin wikiPageWikiLink Exon.
- Chromatin wikiPageWikiLink Exons.
- Chromatin wikiPageWikiLink Francis_Crick.
- Chromatin wikiPageWikiLink Gene.
- Chromatin wikiPageWikiLink Gene_expression.
- Chromatin wikiPageWikiLink Genes.
- Chromatin wikiPageWikiLink Genophore.
- Chromatin wikiPageWikiLink Guanine.
- Chromatin wikiPageWikiLink Heterochromatin.
- Chromatin wikiPageWikiLink Histone.
- Chromatin wikiPageWikiLink Histone-Modifying_Enzymes.
- Chromatin wikiPageWikiLink Histone-modifying_enzymes.
- Chromatin wikiPageWikiLink Histone_modification.
- Chromatin wikiPageWikiLink Interphase.
- Chromatin wikiPageWikiLink Interrupted_gene.
- Chromatin wikiPageWikiLink Intron.
- Chromatin wikiPageWikiLink Introns.
- Chromatin wikiPageWikiLink James_D._Watson.
- Chromatin wikiPageWikiLink James_Watson.
- Chromatin wikiPageWikiLink Karyotype.
- Chromatin wikiPageWikiLink Linker_DNA.
- Chromatin wikiPageWikiLink Maurice_Wilkins.
- Chromatin wikiPageWikiLink Mechanical_properties_of_DNA.
- Chromatin wikiPageWikiLink Meiosis.
- Chromatin wikiPageWikiLink Metaphase.
- Chromatin wikiPageWikiLink Methylation.
- Chromatin wikiPageWikiLink Mitosis.
- Chromatin wikiPageWikiLink Nanometer.
- Chromatin wikiPageWikiLink Nanometre.
- Chromatin wikiPageWikiLink Nature_(journal).
- Chromatin wikiPageWikiLink Nobel_Prize.
- Chromatin wikiPageWikiLink Nobel_Prize_in_Chemistry.
- Chromatin wikiPageWikiLink Nobel_Prize_in_Physiology.
- Chromatin wikiPageWikiLink Nobel_Prize_in_Physiology_or_Medicine.
- Chromatin wikiPageWikiLink Nuclear_lamina.
- Chromatin wikiPageWikiLink Nucleic_acid_structure.
- Chromatin wikiPageWikiLink Nucleoid.
- Chromatin wikiPageWikiLink Nucleoid_region.
- Chromatin wikiPageWikiLink Nucleosome.
- Chromatin wikiPageWikiLink Nucleus_(cell).
- Chromatin wikiPageWikiLink Optical_microscope.
- Chromatin wikiPageWikiLink Phillip_A._Sharp.
- Chromatin wikiPageWikiLink Phillip_Allen_Sharp.
- Chromatin wikiPageWikiLink Polycomb-group_proteins.
- Chromatin wikiPageWikiLink Position-effect_variegation.
- Chromatin wikiPageWikiLink Prokaryote.
- Chromatin wikiPageWikiLink Prokaryotic.
- Chromatin wikiPageWikiLink Protamine.
- Chromatin wikiPageWikiLink Protein.
- Chromatin wikiPageWikiLink Protozoa.
- Chromatin wikiPageWikiLink RNA.
- Chromatin wikiPageWikiLink RNA_polymerase.
- Chromatin wikiPageWikiLink RNA_polymerase_II.
- Chromatin wikiPageWikiLink RNA_polymerase_control_by_chromatin_structure.
- Chromatin wikiPageWikiLink Red_blood_cell.
- Chromatin wikiPageWikiLink Red_blood_cells.
- Chromatin wikiPageWikiLink Richard_J._Roberts.
- Chromatin wikiPageWikiLink Roger_D._Kornberg.
- Chromatin wikiPageWikiLink Roger_Kornberg.
- Chromatin wikiPageWikiLink Salt-and-pepper_chromatin.
- Chromatin wikiPageWikiLink Spermatid.
- Chromatin wikiPageWikiLink Spermatozoa.
- Chromatin wikiPageWikiLink Spermatozoon.
- Chromatin wikiPageWikiLink Spermiogenesis.