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单词 nicotinamide adenine dinucleotide phosphate
释义

nicotinamide adenine dinucleotide phosphate


NADP

nicotinamide adenine dinucleotide phosphate: a coenzyme, C21H28N7O17P3, similar in function to NAD in many oxidation-reduction reactions.
Thesaurus
Noun1.nicotinamide adenine dinucleotide phosphate - a coenzyme similar to NAD and present in most living cells but serves as a reductant in different metabolic processesNADPcoenzyme - a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes

Nicotinamide Adenine Dinucleotide Phosphate


Nicotinamide adenine dinucleotide phosphate (NADP)

A coenzyme and an important component of the enzymatic systems concerned with biological oxidation-reduction systems. It is also known as NAD, triphosphopyridine nucleotide (TPN), coenzyme II, and codehydrogenase II. The compound is similar in structure and function to nicotinamide adenine dinucleotide (NAD). It differs structurally from NAD in having an additional phosphoric acid group esterified at the 2′ position of the ribose moiety of the adenylic acid portion. In biological oxidation-reduction reactions the NADP molecule becomes alternately reduced to its hydrogenated form (NADPH) and reoxidized to its initial state (see illustration). See Carbohydrate metabolism, Coenzyme, Enzyme

Triphosphopyridine nucleotideTriphosphopyridine nucleotide

Nicotinamide Adenine Dinucleotide Phosphate

 

(NADP; also called triphosphopyridine nucleotide, or TPN; obsolete term, coenzyme II and codehydrogenase II), a common coenzyme. Like nicotinamide adenine dinucleotide, NADP is found in all types of cells, where it participates in oxidation-reduction reactions. Its structure was established in 1934 by O. Warburg. It serves as a hydrogen acceptor during the oxidation mainly of carbohydrates; in its reduced form it is a hydrogen donor during the biosynthesis of fatty acids. In the chloroplasts of plant cells, NADP is reduced during the light reactions of photosynthesis and then provides hydrogen for the synthesis of carbohydrates during dark reactions.

nicotinamide adenine dinucleotide phosphate

[‚nik·ə¦tin·e‚mīd ′ad·ən‚ēn dī¦nü·klē·ə‚tīd ′fäs‚fāt] (cell and molecular biology) A coenzyme and important component of the enzymatic systems concerned with biological oxidation-reduction systems. Abbreviated NADP+ (the reduced form is abbreviated NADPH).

nicotinamide adenine dinucleotide phosphate


nic·o·tin·a·mide ad·e·nine di·nu·cle·o·tide phos·phate (NADP, NADP+, NADPH),

(nik'ō-tin'ă-mīd ad'ĕ-nīn dī-nū'klē-ō-tīd fos'fāt), A coenzyme of many oxidases (dehydrogenases), in which the reaction NADP+ + 2H ⇋ NADPH + H+ takes place; the third phosphoric group esterifies the 2'-hydroxyl of the adenosine moiety of NAD+.

nic·o·tin·a·mide ad·e·nine di·nu·cle·o·tide phos·phate

(NADP) (nik'ō-tin'ă-mīd ad'ĕ-nēn dī-nū'klē-ō-tīd fos'fāt) A coenzyme of many oxidases (dehydrogenases), in which the reaction NADP+ + 2H → NADPH + H+ takes place; the third phosphoric group esterifies the 2'-hydroxyl of the adenosine moiety of NAD.

nicotinamide adenine dinucleotide phosphate

Abbreviation: NADP
A coenzyme that contains adenosine, nicotinamide, and phosphoric acid. When in its oxidized form (NADP+), it serves as an electron carrier in catabolic and anabolic reactions. In its reduced form (NADPH or NADPH-diaphorase), it is important in reducing the ferric iron (Fe+++) to its ferrous (Fe++) form, thus converting methemoglobin (which is unable to transport oxygen) to hemoglobin (which can transport oxygen). Deficiency of NADPH-diaphorase causes congenital methemoglobinemia. Synonym: methemoglobin reductaseSee also: nicotinamide
See NADP+
See NADP

nicotinamide adenine dinucleotide phosphate


  • noun

Synonyms for nicotinamide adenine dinucleotide phosphate

noun a coenzyme similar to NAD and present in most living cells but serves as a reductant in different metabolic processes

Synonyms

  • NADP

Related Words

  • coenzyme
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更新时间：2025/1/31 7:29:26