Chromatin is the complex of DNA and protein that makes up chromosomes. It is found inside the nuclei of eukaryotic cells, and within the nucleoid in prokaryotes.
chromatin
the part of the nucleus that stains well
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Chromatin
Chromosome organized in nucleosomes composed of histones and other protein factors.
Related ...
chromatin
noun
A complex of nucleic acids (e.g. DNA or RNA) and proteins (histones), which condenses to form a chromosome during cell division.
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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.
Chromatin and Chromosomes
Packed inside the nucleus of every human cell is nearly 6 feet of DNA, which is subdivided into 46 individual molecules, one for each chromosome and each about 1.5 inches long.
Chromatin
Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions.
Heterochromatin, other than centromeric heterochromatin, dispersed throughout eukaryotic chromosomes.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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.
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.
Below: Human chromosomes (female) ...
Chromatin The complex of DNA in the nucleus with histone and non-histone proteins.
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 ...
chromatin
(kro-muh-tin) [Gk. chroma, color]
The complex of DNA and proteins that makes up a eukaryotic chromosome.
Chromatin organization of the DNA and associated proteins in a non-dividing nucleus of a cell
(chromo = color) ...
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 BIOL1020 Lab 6 Mitosis & Meiosis ...
Chromatin: The complex of DNA and associated histone and non-histone proteins that represents the normal state of genes in the nucleus.
Chromatin immunoprecipitation (chip) A technique for identifying the binding sites of dnabinding proteins. The protein is cross-linked to DNA to which it is bound in chromatin, and the DNA is fragmented into small pieces.
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.
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 ...
Chromatin-remodelling factors and the maintenance of transcriptional states through DNA replication
Sofia Aligianni and Patrick Varga-Weisz1
Marie Curie Research Institute, The Chart, Oxted RH8 0TL, Surrey, U.K.
Chromatin in the nucleus begins to condense and becomes visible in the light microscope as chromosomes. The nucleolus disappears. Centrioles begin moving to opposite ends of the cell and fibers extend from the centromeres.
Chromatin
- Materials found in the nucleus of a cell, composed of DNA, histone, non-histone proteins and some RNA
Chromosome ...
Chromatin Immunoprecipitation: This is a method for isolating and characterizing the specific pieces of DNA out of an entire genome, to which is bound a protein of interest.
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.
Chromatin, Inc.
Chromatin's technology focuses on the design of plant mini-chromosomes, large DNA molecules with the capacity to carry multiple genes.
Heterochromatin
The term proposed by Heitz (1928) for parts of chromosomes with an abnormal degree of contraction or of staining properties at nuclear divisions (Gk. heteros, different). Composed of repetitive DNA, stains dark bands in G-banding.
Chromosome -- in the eukaryotic nucleus, one of the threadlike structures consisting of chromatin and carry genetic information arranged in a linear sequence.
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) ...
most numerous (60 per cent.) and important are irregular in shape, possessed of the power of ameboid movement, and are characterized by nuclei which often consist of two or three parts (multipartite) connected together by fine threads of chromatin.
When unwound, the chromosomes are referred to as chromatin. Chromosomes are unwound when they are "working" (taking part in transcription or replication).
When the cell is in a resting state there is something called chromatin in the nucleus. Chromatin is made of DNA, RNA, and nuclear proteins. DNA and RNA are the nucleic acids inside of the cell.
Beyond 30 nm fiber the structure of chromatin is poorly understood, but it is classically suggested that the 30 nm fiber is arranged into loops along a central protein scaffold to form transcriptionally active euchromatin.
FISH (fluorescence in situ hybridization) A physical mapping approach that uses fluorescein tags to detect hybridization of probes with metaphase chromosomes and with the less-condensed somatic interphase chromatin.
Prophase: During this first mitotic stage, the nucleolus fades and chromatin (replicated DNA and associated proteins) condenses into chromosomes. Each replicated chromosome comprises two chromatids, both with the same genetic information.
SMART The SMART database includes more than 500 domain families found in signaling, extracellular and chromatin-associated proteins are detectable.
Chromatin condenses (remember that chromatin/DNA replicate during Interphase), the nuclear envelope dissolves, centrioles (if present) divide and migrate, kinetochores and kinetochore fibers form, and the spindle forms.
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).
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.
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.
 See also: Cell, DNA, Chromosome, Protein, Cells
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