2008 年 72 巻 9 号 p. 2456-2458
The L-tryptophan decarboxylase (TDC) gene of rice was heterologously expressed in various organisms. Transgenic rice overexpressing TDC showed accumulation of serotonin upon 5-hydroxytryptophan treatment, which was consistent with the in vitro 5-hydroxytryptophan decarboxylase enzyme activity of purified recombinant rice TDC in a pyridoxal phosphate-dependent manner. Recombinant yeast harboring TDC produced serotonin at the expense of the endogenous 5-hydroxytryptophan levels.
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