| thiolesterase | <enzyme> An enzyme that hydrolyzes thioesters; e.g., the deacylating activity at the end of fatty acid biosynthesis that releases palmitate. Synonym: thiolesterase. (05 Mar 2000) |
|---|---|
| thiolhistidylbetaine | <chemical> Chemical name: 1H-Imidazole-4-ethanaminium, alpha-carboxy-2,3-dihydro-N,N,N-trimethyl-2-thioxo-, inner salt, (S)- (12 Dec 1998) |
| thioltransacetylase A | <enzyme> Part of the pyruvate dehydrogenase complex; acef isolated from e. Coli Registry number: EC 2.3.1.12 Synonym: dihydrolipoyl transacetylase, lipoate acetyltransferase, dihydrolipoyl acetyltransferase, acef gene product (26 Jun 1999) |
| thioltransferase | <enzyme> Reduces disulfide groups via thiol transfer; proposed to catalyze transfer of organomercurial from one thiol complex to another Registry number: EC 1.8.4.1 Synonym: glutathione-disulfide oxidoreductase, thioldisulfide oxidoreductase, glutaredoxin, mammalian, glutaredoxin, rice (26 Jun 1999) |
| thiolysis | The cleavage of a chemical bond with the addition of coenzyme A to one part; analogous to hydrolysis and phosphorolysis. (05 Mar 2000) |
| thiomersal | Ethylmercury sodium salt, an antiseptic. (27 Sep 1997) |
| thiomersalate | Ethylmercury sodium salt, an antiseptic. (27 Sep 1997) |
| thiomethyladenosine | Adenosine carrying an -SCH3 group in place of OH at position 5'; the -SCH3 group is transferred to alpha-aminobutyric acid to form l-methionine in some bacteria. Methylthioadenosine is formed from S-adenosyl-l-methionine in the course of spermidine synthesis by loss of the alanine moiety. Synonym: thiomethyladenosine. (05 Mar 2000) |
| thionaphthene | <chemistry> A double benzene and thiophene nucleus, C8H6S, analogous to naphthalene, and like it the base of a large series of derivatives. Alternative forms: thionaphtene. Origin: Thiophene + naphthalene. Source: Websters Dictionary (01 Mar 1998) |
| thionein | The apoprotein of metallothionein. (05 Mar 2000) |
| thioneine | <chemical> Chemical name: 1H-Imidazole-4-ethanaminium, alpha-carboxy-2,3-dihydro-N,N,N-trimethyl-2-thioxo-, inner salt, (S)- (12 Dec 1998) |
| thionic | <chemistry> Of or pertaining to sulphur; containing or resembling sulphur; specifically, designating certain of the thio compounds; as, the thionic acids. Cf. Dithionic, Trithionic, Tetrathionic, etc. Origin: Gr. Brimstone, sulphur. Source: Websters Dictionary (01 Mar 1998) |
| thionine | <chemistry> An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder. Synonym: phenylene violet. Origin: Gr. Brimstone, sulphur. Source: Websters Dictionary (01 Mar 1998) |
| thionins | Group of small, hydrophobic plant proteins of 45-50 residues that are toxic to animals. (18 Nov 1997) |
| thiono- | <prefix> Prefix sometimes used for thioxo-. (05 Mar 2000) |