The Molecular Biology Notebook Online
A Beginners' Guide to Molecular Biology

Chromatin

Material composed of DNA and proteins, of which chromosomes are made.

View: Dr Chromo's lecture on Chromosomes

Related Links

This is a search for chromatin in our database

• Chromatin.net: Chromatin is that portion of the cell nucleus which contains all of the DNA of the nucleus in animal or plant cells. (A small amount of special DNA is also found in the mitochondria of the cell cytoplasm outside of the cell nucleus.)
• ChromDB: The Plant Chromatin Database: The mission of ChromDB is to bring together information on homologs of chromatin-associated proteins encoded by plant genomes, organize this information logically and in a comparative manner across species (with reference to other eukaryotes to the extent possible), and make it readily accessible to any members of the research and teaching communities who might be interested in the role played by chromatin proteins in the control of gene expression and genome organization. Our first priority is to provide (a) complete sets of genes encoding chromatin-associated proteins (CAPs) for those plant species with complete or near-complete genome sequences (currently Arabidopsis and rice, with poplar to be displayed in the future), (b) the best available splicing models and predicted protein sequences for these genes, and (c) a molecular phylogenetic context for understanding the evolutionary diversification of these protein families during plant evolution with reference to animal and fungal homologs. Our next priorities will be to identify and present CAP genes in all available EST and partial genomic sequences of other plant species, as well as to provide information regarding their biochemical, developmental, physiological, and cellular functions through a community annotation mechanism.
• Euchromatin Network: Euchromatin is that portion of the genome that is most active in gene transcription within the animal cell nucleus. It is in marked contrast to heterochromatin, which is the least active. And yet, either form of chromatin can be converted to the other, conversion to euchromatin being associated with new gene activation for RNA synthesis, and conversion to heterochromatin being associated with new gene repression for RNA synthesis. // Together with the Euchromatin Network, we are developing forums on all aspects of euchromatin, its composition, activity, control, and significance. We welcome your comments and suggestions in the design of these forums, and your participation in their on-going discussions.
• Waterborg\'s Chromatin HomePage: Has a presentation with images on chromatin, some hands outs and papers

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