| L-radiation | An x-radiation of slight penetrating power excited by cathode rays (high speed electrons) impinging on a metal anode; the energy of the radiation is a function of the binding energy of the L-shell electrons of the metal anode. (05 Mar 2000) |
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| l-rhamnose | A methylpentose present in a number of plant glycosides, free in poison sumac, in lipopolysaccharides of Enterobacteriaceae, and in rutinose (a disaccharide). Synonym: isodulcit. (05 Mar 2000) |
| L-rhamnose isomerase | <enzyme> Specified by structural gene rhaa from E coli; catalyses the conversion of l-rhamnose to l-rhamnulose Registry number: EC 5.3.1.14 Synonym: l-rhamnose ketol-isomerase (26 Jun 1999) |
| L-ribose reductase | <enzyme> Nadph-linked E coli enzyme converts l-ribose to ribitol Registry number: EC 1.1.1.- (26 Jun 1999) |
| L-ribulosephosphate 4-epimerase | <enzyme> Consider also EC 5.1.3.1,ribulosephosphate 3-epimerase Registry number: EC 5.1.3.4 Synonym: l-ribulose 5-phosphate 4-epimerase, rpe1 gene product (26 Jun 1999) |