| lactone | <chemistry> One of a series of organic compounds, regarded as anhydrides of certain hydroxy acids. In general, they are colourless liquids, having a weak aromatic odour. They are so called because the typical lactone is derived from lactic acid. Source: Websters Dictionary (01 Mar 1998) |
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| pantoyl lactone dehydrogenase | <enzyme> An fmn-dependent enzyme that catalyses the formation of ketopantoyl lactone from l-(+)-pantoyl lactone; isolated from nocardia asteroides Registry number: EC 1.1.99.- (26 Jun 1999) |
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| homoserine lactone | The cyclic ester (i.e., the d-lactone) of homoserine; formed by the reaction of cyanogen bromide on methionyl residues in peptides and proteins. (05 Mar 2000) |
| triacetic acid lactone lyase | <enzyme> Non-hydrolytic; froms acetyl-CoA from triacetic acid lactone plus ATP plus CoA Registry number: EC 4.2.99.- Synonym: ATP tal (26 Jun 1999) |
| 6-phospho-d-glucono d-lactone | An intermediate in the pentose phosphate pathway that is synthesised from d-glucose-6-phosphate. (05 Mar 2000) |
| l-gulono-gamma-lactone | The immediate precursor of ascorbic acid in those animals capable of ascorbic acid biosynthesis. Synonym: dihydroascorbic acid, l-gulono-gamma-lactone. L-gulonolactone oxidase, the enzyme catalyzing the conversion of l-gulonolactone and O2 to H2O2 and l-xylo-hexulonolactone, a precursor of ascorbic acid; absent in primates. (05 Mar 2000) |