| nucleoskeletal DNA | <molecular biology> DNA that is proposed to exist mostly to maintain nuclear volume and not for coding protein. (18 Nov 1997) |
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| nucleosome | <cell biology> Repeating units of organisation of chromatin fibres in chromosomes, consisting of around 200 base pairs and two molecules each of the histones H2A, H2B, H3 and H4. most of the DNA (around 140 base pairs) is believed to be wound around a core formed by the histones, the remainder joins adjacent nucleosomes, thus forming a structure reminiscent of a string of beads. Origin: Gr. Soma = body (18 Nov 1997) |
| nucleosomes | The repeating structural units of chromatin, each consisting of approximately 200 base pairs of DNA wound around a protein core. This core is composed of the histones h2a, h2b, h3, and h4. (12 Dec 1998) |
| nucleospindle | The fusiform body in mitosis. (05 Mar 2000) |
| nucleotidase | <enzyme> Catalyses dephosphorylation of ribonucleoside 5'-monophosphates, ribonucleoside 3'-monophosphates and deoxyribonucleoside 3'-monophosphates Registry number: EC 3.1.3.31 Synonym: deoxyinosine-activated nucleotidase, nucleotide phosphohydrolase, cytosolic deoxyribonucleotide-activated nucleotidase, da-nucleotidase (26 Jun 1999) |
| nucleotidases | <enzyme> A class of enzymes that catalyze the conversion of a nucleotide and water to a nucleoside and orthophosphate. Registry number: EC 3.1.3.- (12 Dec 1998) |
| nucleotide | <biochemistry> Phosphate esters of nucleosides. The metabolic precursors of nucleic acids are monoesters with phosphate on carbon 5 of the pentose (known as 5' to distinguish sugar from base numbering). However many other structures, such as adenosine 3'5' cyclic monophosphate (cAMP) and molecules with 2 or 3 phosphates are also called nucleotides. (18 Nov 1997) |
| nucleotide 3'-pyrophosphokinase-2',3'-cyclic monophosphokinase | <enzyme> Transfers 5'-beta,gamma-pyrophosphate from ATP and some ATP derivatives to nucleotides and nucleosides at the 3'-hydroxyl group; synthesises the respective 3'-pyrophosphoryl nucleotides Registry number: EC 2.7.6.- Synonym: ppkase (26 Jun 1999) |
| nucleotide binding fold | Protein motif consisting of a fold or pocket with certain conserved residues, required for the binding of nucleotides. (18 Nov 1997) |
| nucleotide deaminases | <enzyme> Catalyze the hydrolysis of nucleotides with the elimination of ammonia. Registry number: EC 3.5.4 (12 Dec 1998) |
| nucleotide deletion | Deletion of a single nucleotide, which in a transcribed gene will lead to a frameshift mutation. Synonym: point deletion. (05 Mar 2000) |
| nucleotide mapping | Two-dimensional separation and analysis of nucleotides. (12 Dec 1998) |
| nucleotide pair | <molecular biology> Two nitrogenous bases (adenine and thymine or guanine and cytosine) held together by weak bonds. Two strands of DNA are held together in the shape of a double helix by the bonds between base pairs. (09 Oct 1997) |
| nucleotide phosphotransferase | <enzyme> Transfers phosphoric acid from an organic phosphate donor to the 2' or 3' hydroxyls of nucleosides and nucleotides Registry number: EC 2.7.1.- (26 Jun 1999) |
| nucleotide pyrophosphate transferase | <enzyme> Transfers the beta, gamma pyrophosphate group from ATP to 3'-hydroxy group of ribonucleotides, oligonucleotides or trna Registry number: EC 2.7.6.- (26 Jun 1999) |
Synonyms : Fingerprint, Nucleotide, Mapping, Nucleotide, Mappings, Nucleotide, Nucleotide Fingerprint, Nucleotide Fingerprints, Nucleotide Mappings
Synonyms : Nucleotide Translocase, Transport Proteins, Nucleotide
Synonyms :
Synonyms : Cyclic Nucleotides
Synonyms :
| nuclear pore |
An opening in the nuclear envelope that joins the inner and outer nuclear membranes.
출처: www.genpromag.com/Glossary~LETTER~N.html
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| nuclei |
An organelle containing chromosomes that is the site of cellular DNA synthesis and RNA replication.
출처: www.genpromag.com/Glossary~LETTER~N.html
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| nuclide |
A single isotope.
출처: www.genpromag.com/Glossary~LETTER~N.html
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| nucleocytoplasmic |
Relating the nucleus to the cytoplasm.
출처: www.genpromag.com/Glossary~LETTER~N.html
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| nuclease |
An enzyme that hydrolyzes ester linkages in nucleic acids.
출처: www.genpromag.com/Glossary~LETTER~N.html
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