Chapter title |
Latest on enzymology of serotonin biosynthesis in walnut seeds.
|
---|---|
Chapter number | 81 |
Book title |
Tryptophan, Serotonin, and Melatonin
|
Published in |
Advances in experimental medicine and biology, January 1999
|
DOI | 10.1007/978-1-4615-4709-9_81 |
Pubmed ID | |
Book ISBNs |
978-1-4613-7133-5, 978-1-4615-4709-9
|
Authors |
P Schröder, C Abele, P Gohr, U Stuhlfauth-Roisch, W Grosse, Schröder, P, Abele, C, Gohr, P, Stuhlfauth-Roisch, U, Grosse, W, Schröder, Peter, Abele, Claudia, Gohr, Petra, Stuhlfauth-Roisch, Uta, Grosse, Wolfgang, Peter Schröder, Claudia Abele, Petra Gohr, Uta Stuhlfauth-Roisch, Wolfgang Grosse |
Abstract |
Serotonin (5-HT) accumulation in walnut cotyledons is seen as a detoxification mechanism protecting the sensitive plant tissues of seeds from highly toxic ammonia concentrations following seed desiccation. Different metabolic pathways and cell compartments are involved in biosynthesis and storage of 5-HT. Ammonia fixation and incorporation into the indole moiety of tryptophan is followed by 5-HT biosynthesis via tryptamine in a two-step pathway with the adaptive tryptophan decarboxylase and the constitutive tryptamine 5-hydroxylase. Evidence is provided that tryptamine 5-hydroxylase is a member of the cytochrome P450 family which is involved in lipid hydroxylation processes in the very early period of seed development. |
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Geographical breakdown
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Demographic breakdown
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Other | 0 | 0% |
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