| l-selectin | Cell adhesion molecule and CD antigen that serves as a homing receptor for lymphocytes to lymph node high endothelial venules. (12 Dec 1998) |
|---|---|
| l-serine dehydratase | <enzyme> An enzyme of the lyase class that catalyses the dehydration and deamination of l-serine to form pyruvate. Chemical name: L-Serine hydro-lyase (deaminating) Registry number: EC 4.2.1.13 (12 Dec 1998) |
| l-sorbose | A very sweet reducing, but not fermentable, 2-ketohexose obtained from the berries of the mountain ash, Sorbus aucuparia (family Rosaceae), and from sorbitol by fermentation with Acetobacter suboxydans; l-sorbose is epimeric with d-fructose and is used in the manufacture of vitamin C. Synonym: sorbin, sorbinose, sorbitose. (05 Mar 2000) |
| L-sorbose-(acceptor) 5-oxidoreductase | <enzyme> Fad-dependent enzyme that catalyses conversion of l-sorbose to l-sorbosone; 58-kD membrane protein in gluconobacter oxydans Registry number: EC 1.1.99.12 Synonym: l-sorbose dehydrogenase, sdh enzyme (26 Jun 1999) |
| L-sorbose-1-phosphate reductase | <enzyme> Converts l-sorbose 1-phosphate to d-glucitol 6-phosphate in the presence of NADPH; also converts d-fructose 1-phosphate to d-mannitol 6-phosphate Registry number: EC 1.1.1.- Synonym: sor e gene product, sor 1-p reductase, sorbose-1-p reductase (26 Jun 1999) |
| L-sorbosone dehydrogenase | <enzyme> Converts l-sorbosone to 2-keto-l-gulonic acid. Registry number: EC 1.2.99.- (26 Jun 1999) |
| l-stercobilinogen | Reduction product of l-urobilinogen, precursor of l-stercobilin in the final stages of bilirubin metabolism; excreted in faeces, wherein it is oxidised to stercobilin. See: bilirubinoids. (05 Mar 2000) |
| L-tartrate decarboxylase | <enzyme> Nad+ dependent enzyme; catalyses the decarboxylation of l-tartrate in pseudomonas sp. Group ve-2 forming glyceric acid and co2 via enzyme-bound oxaloglycolate Registry number: EC 4.1.1.- (26 Jun 1999) |
| L-tartrate dehydratase | <enzyme> From E coli; forms oxaloacetate and water; exists in an inactive low-molecular form, which is converted into the active enzyme in the presence of fe(2+) and thiol; related to class I fumarases Registry number: EC 4.2.1.32 Synonym: (r,r)-tartrate hydro-lyase (26 Jun 1999) |
| L-tryptophan 2',3'-oxidase | <enzyme> Specifically catalyses the alpha,beta-dehydrogenation of l- tryptophan derivatives; from chromobacterium violaceum Registry number: EC 1.3.99.- Synonym: l-tryptophan - oxygen 2',3'-oxidoreductase, l-trp-2',3'-oxidase (26 Jun 1999) |
| L-tyrosine ammonia-lyase | <enzyme> Catalyses the conversion of tyrosine to trans-p-coumaric acid and ammonia Registry number: EC 4.3.1.- Synonym: tyrosine ammonia-lyase (26 Jun 1999) |
| L-xylulose reductase | <enzyme> Chemical name: xylitol nadp 4-oxidoreductase (l-xylulose-forming) Registry number: EC 1.1.1.10 (26 Jun 1999) |
| l-xylulosuria | essential pentosuria |