Chromatin

chromatin
the part of the nucleus that stains well
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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Chromatin
Chromosome organized in nucleosomes composed of histones and other protein factors.
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Chromatin is the structural building block of a chromosome. It is found inside the nucleus of a cell and consists of a complex of DNA and protein in eukaryotic cells. The nucleic acids are generally in the form of double-stranded DNA (a double helix).
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Definition of chromatin :
The substance of chromosomes; now known to include DNA, chromosomal proteins, and chromosomal RNA. The nucleoprotein material of the eukaryotic chromosome.
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Definition: Mass of genetic material composed of DNA and proteins that condense to form chromosomes in eukaryotic cell division. Chromatin is located in the cell's nucleus.
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region that stains poorly or not at all; thought to contain the normally functioning genes. Region of eukaryotic chromosome that is diffuse during interphase. Presumably the actively transcribing DNA of the chromosomes. (See heterochromatin) ...
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Chromatin is the substance of a chromosome and consists of a complex of DNA and protein in eukaryotic cells. It can be made visible by staining (thus the name which literaly means coloured material).
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Examination of Feulgen-stained nuclei revealed nuclear substructure distinguished by differing levels of staining, designated heterochromatin, euchromatin and nucleoli in order of decreasing stain intensity.
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Chromatin, Chromosomes
Chromatin is a mass of uncoiled DNA and associated proteins called histones.
When cell division begins, DNA coils around the proteins forming visible structures called chromosomes.
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Chromatin
The nucleus contains the chromosomes of the cell. Each chromosome consists of a single molecule of DNA complexed with an equal mass of proteins. Collectively, the DNA of the nucleus with its associated proteins is called chromatin.
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Chromatin
Flemming's term for the material of which the chromosomes are composed. The composite of DNA and proteins that comprise chromosomes.
Related Terms: Chromosome ...
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chromatin: compacted DNA and protein.
chromosomes: linear units of DNA.
chyme: a soupy liquid formed in the stomach from the churning of the bolus with gastric juices.
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chromatin A complex of DNA and protein in eukaryotic cells that is dispersed throughout the nucleus during interphase and condensed into chromosomes during meiosis and mitosis. PICTURE ...
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chromatin
(kro-muh-tin) [Gk. chroma, color]
The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing, chromatin exists as a mass of very long, thin fibers that are not visible with a light microscope.
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chromatin
the aggregate mass of dispersed genetic material formed of DNA and protein and observed between periods of cell division in eukaryotic cells.
Covered in Lab 3 Cell Biology ...
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Chromatin
: The complex of DNA and associated histone and non-histone proteins that represents the normal state of genes in the nucleus.
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chromatin Nuclear material that gives rise to chromosomes during mitosis; complex of DNA, histones, and nonhistone proteins.
chromatoid bar Masses of RNA, visible with light microscopy, in young cysts of Entamoeba spp.
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Chromatin, Inc.
mach@chromatininc.com
Chromatin's technology focuses on the design of plant mini-chromosomes, large DNA molecules with the capacity to carry multiple genes.
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Euchromatin: The gene-rich regions of a genome (see also heterochromatin).
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Heterochromatin. Dark-stained regions of chromosomes thought to be for the most part genetically inactive.
Heteroduplex. A double-stranded DNA molecule or DNA-RNA hybrid, where each strand is of a different origin.
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Prophase
chromatin coils up into short fat rods called chromosomes
nuclear envelop disappears
spindle fibers begin to form
nucleolus disappears ...
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Chromosome -- in the eukaryotic nucleus, one of the threadlike structures consisting of chromatin and carry genetic information arranged in a linear sequence.
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Heterochromatin. Dark-stained regions of chromosomes thought to be for the most part genetically inactive. Heteroduplex. A double-stranded DNA molecule or DNA-RNA hybrid, where each strand is of a different origin. Heterogeneous nuclear RNA (hnRNA).
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hept- seven hetero- different heterochromatin Chromatin which in a condensed, less accessible state and are thus frequently transcriptionally silent. However, some DNA is constitutive heterochromatin (e.g.
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Chromosomes - condensed form of chromatin visible during cellular division
Cytoplasm - collective term for cytosol and all the organelles contained in it (outside the nucleus and within the plasma membrane) ...
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49-58 6 The relationship between higher-order chromatin structure and transcription Nick Gilbert and Wendy A. Bickmore..........
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nucleosome - unit of chromatin consisting of a short length of DNA (about 140 bp) wrapped twice around a core of eight histone proteins (two each of H2A, H2B, H3 and H4).
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Histone
A basic protein from eukaryotes (or Archae) which binds to DNA, forming nucleosomes, and packaging the DNA into chromatin.
Histone-like proteins
Proteins from bacteria which bind to DNA, and compact the DNA.
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One study found that these bind to proteins used to reshape chromatin during cell division. Perhaps this apparent junk DNA is actually helping provide structure to the chromosome and regulate the production of proteins in different cell types.
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