| nucleolus |
(L. nucleolus, a small nucleus) An RNA-rich intranuclear organelle in the nucleus of eukaryotic cells, produced by a nucleolar organizer. It represents the storage place for ribosomes and ribosome precursors. The nucleolus consists primarily of ribosomal precursor RNA, ribosomal RNA, their associated proteins, and some, perhaps all, of the enzymatic equipment (RNA polymerase, RNA methylase, RNA cleavage enzymes) required for synthesis, conversion and assembly of ribosomes. ...
출처: www.fao.org/docrep/003/X3910E/X3910E17.htm
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| nucleoplasm |
The non-staining or slightly chromophilic, liquid or semi-liquid, ground substance of the interphase nucleus and which fills the nuclear space around the chromosomes and the nucleoli. Little is known of the chemical composition of this ground substance, which is not easily defined. It may be called "karyoplasm" when it is gel-like, and "karyolymph" when it is a colloidal fluid, but generally the terms are synonymous.
출처: www.fao.org/docrep/003/X3910E/X3910E17.htm
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| nucleoprotein |
Conjugated protein composed of nucleic acid and protein; the material of which the chromosomes are made.
출처: www.fao.org/docrep/003/X3910E/X3910E17.htm
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| 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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