| nucleoside |
A base (purine or pyrimidine) that is covalently linked to a 5-carbon (pentose) sugar. When the sugar is ribose, the nucleoside is a ribonucleoside; when it is deoxyribose, the nucleoside is a deoxyribonucleoside. Adenine, guanine and cytosine occur in both DNA and RNA; thymine occurs in DNA; and uracil in RNA. They are the building blocks of DNA and RNA. See nucleoside analogue.
출처: www.fao.org/docrep/003/X3910E/X3910E17.htm
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|---|---|
| nucleosome |
Spherical sub-units of eukaryotic chromatin that are composed of a core particle consisting of an octamer of histones (two molecules each of histones H 2a , H 2b , H 3 and H 4 ) and 146 nucleotide pairs.
출처: www.fao.org/docrep/003/X3910E/X3910E17.htm
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| nuclear magnetic resonance |
A spectroscopy tool used for the assignment and confirmation of chemical structure of a compound or biological macromolecule. Sophisticated multi-dimensional methods are used to characterize larger and more complex biomolecules.
출처: www.nature.com/nrd/journal/v2/n5/glossary/nrd1086_...
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| nucleus basalis of Meynert |
A telencephalic structure that provides most of the acetylcholine to the cerebral cortex.
출처: www.nature.com/focus/neurodegen/glossary/
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| nucleosome |
The fundamental structural unit of eukaryotic chromosomes. It consists of pairs of each of the core histones (H2A, H2B, H3 and H4), thereby creating the histone octamer, and a single molecule of the linker histone H1. The nucleosome spans 180 base pairs of DNA. During apoptotic cell death, cleavage of nuclear DNA typically occurs at these nucleosomal intervals.
출처: www.nature.com/nri/journal/v5/n4/glossary/nri1594_...
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