PAO5 cDNA ORF clone, Arabidopsis thaliana(thale cress)

Sequence and analysis of chromosome 4 of the plant Arabidopsis thaliana.
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Nature402(6763)769-77(1999 Dec)

Two independent loss-of-function mutants (atpao5-2 and atpao5-3) were found to exhibit constitutively higher thermospermine levels, with associated increased salt tolerance.
Title: Polyamine oxidase 5 loss-of-function mutations in Arabidopsis thaliana trigger metabolic and transcriptional reprogramming and promote salt stress tolerance.

AtPAO5, being involved in the control of Therm-Spm homeostasis, participates in the tightly controlled interplay between auxin and cytokinins that is necessary for proper xylem differentiation.
Title: The Arabidopsis polyamine oxidase/dehydrogenase 5 interferes with cytokinin and auxin signaling pathways to control xylem differentiation.

AtPAO5 is a cytosolic protein undergoing proteasomal control. Positive regulation of AtPAO5 expression by polyamines is at the transcriptional and post-transcriptional level.
Title: A plant spermine oxidase/dehydrogenase regulated by the proteasome and polyamines.

results suggest that rice PAO1 is the functional ortholog of Arabidopsis PAO5
Title: POLYAMINE OXIDASE 1 from rice (Oryza sativa) is a functional ortholog of Arabidopsis POLYAMINE OXIDASE 5.

flavin amine oxidase (FAO1) affects shoot regeneration by regulating cellular polyamines. [FAO1]
Title: Cloning and characterization of Arabidopsis and Brassica juncea flavin-containing amine oxidases.