This view shows enzymes only for those organisms listed below, in the list of taxa known to possess the pathway. If an enzyme name is shown in bold, there is experimental evidence for this enzymatic activity.
Synonyms: spermidine phenylpropanoid conjugates biosynthesis, polyamine conjugates biosynthesis
|Superclasses:||Biosynthesis → Secondary Metabolites Biosynthesis → Nitrogen-Containing Secondary Compounds Biosynthesis|
Some taxa known to possess this pathway include : Arabidopsis thaliana col
Expected Taxonomic Range: Viridiplantae
Polyamine hydroxycinnamic acid conjugates (polyamine phenylpropanoid conjugates) belong to the larger group of hydroxycinnamic acid amides. Polyamine conjugates have been identified in flowers of many plant species. Their exact role has not been proved. They may offer pollen grains protection against environmental stresses such as UV irradiation as well as pathogen attack. The accumulation of polyamine conjugates in pollen has also been associated with fertility. Dihydroxyferuloyl-sinapoyl spermidine is the predominant polyamine conjugate found in Arabidopsis flowers buds [Grienenberger09]. The biosynthetic pathway leading to this spermidine conjugate has only been proposed recently. Biochemical and genetic data demonstrated the involvement of a spermidine hydroxycinnamoyl transferase (SHT), an O-methyltransferase (TSM1), and a cytochrome P450 monooxygenase (CYP98A8). Similar gene expression profiles were found for SHT, TSM1 and CYP98A8.
Grienenberger09: Grienenberger E, Besseau S, Geoffroy P, Debayle D, Heintz D, Lapierre C, Pollet B, Heitz T, Legrand M (2009). "A BAHD acyltransferase is expressed in the tapetum of Arabidopsis anthers and is involved in the synthesis of hydroxycinnamoyl spermidines." Plant J 58(2);246-59. PMID: 19077165
Matsuno09: Matsuno M, Compagnon V, Schoch GA, Schmitt M, Debayle D, Bassard JE, Pollet B, Hehn A, Heintz D, Ullmann P, Lapierre C, Bernier F, Ehlting J, Werck-Reichhart D (2009). "Evolution of a novel phenolic pathway for pollen development." Science 325(5948);1688-92. PMID: 19779199
Rubio06: Rubio S, Larson TR, Gonzalez-Guzman M, Alejandro S, Graham IA, Serrano R, Rodriguez PL (2006). "An Arabidopsis mutant impaired in coenzyme A biosynthesis is sugar dependent for seedling establishment." Plant Physiol 140(3);830-43. PMID: 16415216
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