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. 1976 May;57(5):687–692. doi: 10.1104/pp.57.5.687

Lysine Catabolism in Barley (Hordeum vulgare L.)

Birger Lindberg Møller a,1
PMCID: PMC542100  PMID: 16659552

Abstract

Lysine catabolism in seedlings of barley (Hordeum vulgare L. var. Emir) was studied by direct injection of the following tracers into the endosperm of the seedlings: aspartic acid-3-14C, 2-aminoadipic acid-1-14C, saccharopine-14C, 2,6-diaminopimelic acid-1-(7)-14C, and lysine-1-14C. Labeled saccharopine was formed only after the administration of either labeled 2,6-diaminopimelic acid or labeled lysine to the seedlings. The metabolic fate of the other tracers administered also supported a catabolic lysine pathway via saccharopine, and apparently proceeding by a reversal of some of the biosynthetic steps of the 2-aminoadipic acid pathway known from lysine biosynthesis in most fungi. Pipecolic acid seems not to be on the main pathway of l-lysine catabolism in barley seedlings.

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Selected References

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