betaine

betaine
1. An oxidation product of choline and a transmethylating intermediate in metabolism. 2. A class of compounds related to b.. (1) ( i.e., R3N=—CHR′—COO), e.g., glycine b.. SYN: glycine b..
- b. aldehyde an intermediate in the interconversion of b. and choline.
- b. hydrochloride an acidifying agent used in the treatment of achlorhydria and hypochlorhydria.

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be·ta·ine 'bēt-ə-.ēn n a sweet crystalline quaternary ammonium salt C5H11NO2 that was first isolated in beet juice and is used to treat homocystinuria and is also used in the form of its hydrochloride C5H11NO2·HCl as a source of hydrochloric acid esp. to treat hypochlorhydria

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be·ta·ine (beґtə-ēn) an oxidation product of choline that is a transmethylating intermediate in metabolism and has been shown to have lipotropic activity. It was found first in the sugar beet and later in many other plants, as well as in animals. It is produced synthetically, and is used in the treatment of homocystinuria. The term has also been used to designate any of a class of trimethyl derivatives of amino acids, such as carnitine, or more generally, the internal salts of quaternary ammonium bases. Called also lycine and oxyneurine.

Medical dictionary. 2011.

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  • Betaine — Bétaïne Les bétaïnes sont des composés d’ammonium quaternaire. Ce ne sont pas des alcaloïdes au sens propre, même si régulièrement classés comme tels : muscarine, choline, neurine. Sommaire 1 Fonctions métaboliques 2 Utilisations 3 …   Wikipédia en Français

  • Betaine — Be ta*ine, n. [From beta, generic name of the beet.] (Chem.) A nitrogenous base, {C5H11NO2}, produced artificially, and also occurring naturally in beet root molasses and its residues, from which it is extracted as a white crystalline substance;… …   The Collaborative International Dictionary of English

  • bétaïne — ● bétaïne nom féminin (latin beta, betterave) Composé ionique dipolaire, dérivé triméthylé du glycocolle, qui se rencontre notamment dans la betterave. Nom donné à de nombreux composés ioniques dipolaires …   Encyclopédie Universelle

  • betaine — [bēt′ə ēn΄, bēt əin΄] n. [L beta, beet + INE3] a crystalline, basic organic compound, (CH3) 3NCH2COO, obtained from beet sugar or prepared synthetically …   English World dictionary

  • Betaine — This article is about the group of chemical compounds. For glycine betaine, see trimethylglycine. A betaine in chemistry is any neutral chemical compound with a positively charged cationic functional group such as an quaternary ammonium or… …   Wikipedia

  • Bétaïne — Les bétaïnes sont des composés d’ammonium quaternaire. Ce ne sont pas des alcaloïdes au sens propre, même si régulièrement classés comme tels : muscarine, choline, neurine. Sommaire 1 Fonctions métaboliques 2 Utilisations 3 …   Wikipédia en Français

  • Betaine — Struktur von Betain Als Betaine wird eine Stoffklasse organisch chemischer Verbindungen bezeichnet, die in ihrer Molekülstruktur sowohl eine positive als auch eine negative Ladung tragen, nach außen hin also ungeladen sind. In Betainen können… …   Deutsch Wikipedia

  • betaine — betainas statusas T sritis chemija formulė Formulę žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. betaine rus. бетаин ryšiai: sinonimas – 2 trimetilamonioetanoatas …   Chemijos terminų aiškinamasis žodynas

  • Betaine-aldehyde dehydrogenase — In enzymology, a betaine aldehyde dehydrogenase (EC number|1.2.1.8) is an enzyme that catalyzes the chemical reaction:betaine aldehyde + NAD+ + H2O ightleftharpoons betaine + NADH + 2 H+The 3 substrates of this enzyme are betaine aldehyde, NAD+,… …   Wikipedia

  • Betaine-homocysteine methyltransferase — protein Name=betaine homocysteine methyltransferase caption= width= HGNCid=1047 Symbol=BHMT AltSymbols= EntrezGene=635 OMIM=602888 RefSeq=NM 001713 UniProt=Q93088 PDB= ECnumber= Chromosome=5 Arm=q Band=13.1 LocusSupplementaryData= q15protein Name …   Wikipedia

  • Betaine-homocysteine S-methyltransferase — In enzymology, a betaine homocysteine S methyltransferase (EC number|2.1.1.5) is an enzyme that catalyzes the chemical reaction:trimethylammonioacetate + L homocysteine ightleftharpoons dimethylglycine + L methionineThus, the two substrates of… …   Wikipedia

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