| nucleoside-monophosphate | A nucleotide, e.g., AMP. (05 Mar 2000) |
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| nucleoside-phosphate kinase | <enzyme> An enzyme that catalyses reversible reactions of a nucleoside triphosphate, e.g., ATP, with a nucleoside monophosphate, e.g., ump, to form ADP and udp. Many nucleoside monophosphates can act as acceptor while many ribo- and deoxyribonucleoside triphosphates can act as donor. Chemical name: ATP:nucleoside-phosphate phosphotransferase Registry number: EC 2.7.4.4 (12 Dec 1998) |
| nucleoside-triphosphatase | <enzyme> Hydrolyzes various nucleotides to a nucleotide diphosphate + pi; inhibited by ca + ATP Registry number: EC 3.6.1.15 Synonym: nucleoside triphosphate phosphohydrolase, nucleoside triphosphatase, ntpase, nuclear envelope nucleoside triphosphatase, nuclear scaffold nucleoside triphosphatase, ns ntpase, nucleosidetriphosphatase (26 Jun 1999) |
| nucleosides | Purine or pyrimidine bases attached to a ribose or deoxyribose. (12 Dec 1998) |
| nucleoskeletal DNA | <molecular biology> DNA that is proposed to exist mostly to maintain nuclear volume and not for coding protein. (18 Nov 1997) |
| 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) |
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 chain |
a longitudinal array of nuclei occurring on an intrafusal fiber of muscle.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| nuclein animal |
an animal into which a certain amount of nuclein has been injected.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| nucleolar-associated chromatin |
nucleolus-associated chromatin, heterochromatin containing DNA, situated around, and sometimes extending into, the nucleolus of a cell.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| nuclear ophthalmoplegia |
that which is due to some lesion of the nuclei of the motor nerves of the eye.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| nummular aortitis |
aortitis with white circular patches on the inner coat of the vessel.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| NU | a computer capable of performing a large number of mathematical operations per second |
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| NU | someone able to perform complex and lengthy calculations |
| NU | performing complex and lengthy numerical calculations |
| NU | (informal) a reference to yourself or myself etc. |
| NU | the first element in a countable series |
| NU | the first or highest in an ordering or series |
| NU | a golf club (a wood) with a near vertical face that is used for hitting long shots from the tee |
| NU | any notation for the representation of numbers |
| NU | any notation for the representation of numbers |
| NU | a mathematician specializing in number theory |
| NU | a numbered list |
| NU | too numerous to be counted |