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Review
. 2000 Nov;44(4):445-50.
doi: 10.1023/a:1026597621646.

Phylogenetic origin of a secondary pathway: the case of pyrrolizidine alkaloids

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Review

Phylogenetic origin of a secondary pathway: the case of pyrrolizidine alkaloids

D Ober et al. Plant Mol Biol. 2000 Nov.

Abstract

Recent studies have revealed high sequence similarity between homospermidine synthase (HSS), the first pathway-specific enzyme in the biosynthesis of pyrrolizidine alkaloids, a class of sporadically occurring plant defence compounds, and deoxyhypusine synthase (DHS), a ubiquitous enzyme involved in the post-translational activation of the eukaryotic initiation factor 5A (eIF5A). The recruitment of DHS during the evolution of the alkaloid pathway is discussed and interpreted as evolution by change of function.

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