Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10869868 | FEBS Letters | 2015 | 8 Pages |
Abstract
In the phylogeny of plant polyamine oxidases (PAOs), clade III members from angiosperms, such as Arabidopsis thaliana PAO5 and Oryza sativa PAO1, prefer spermine and thermospermine as substrates and back-convert both of these substrates to spermidine in vitro. A clade III representative of lycophytes, SelPAO5 from Selaginella lepidophylla, also prefers spermine and thermospermine but instead back-converts these substrates to spermidine and norspermidine, respectively. This finding indicates that the clade III PAOs of lycophytes and angiosperms oxidize thermospermine at different carbon positions. We discuss the physiological significance of this difference.
Keywords
Related Topics
Life Sciences
Agricultural and Biological Sciences
Plant Science
Authors
G.H.M. Sagor, Masataka Inoue, Dong Wook Kim, Seiji Kojima, Masaru Niitsu, Thomas Berberich, Tomonobu Kusano,