Intracellular abundance, localization, and enzymatic activity of a saxitoxin biosynthesis enzyme, SxtG, in two sister subclones of the dinoflagellate Alexandrium catenella with extremely different levels of paralytic shellfish toxins

•Saxitoxin biosynthetic enzyme, SxtG, localizes to chloroplasts.•The PST-negative subclone of Alexandrium catenella expresses active SxtG but not SxtA.•The first in vitro reproduction of the early step of STX biosynthesis in dinoflagellates. Paralytic shellfish poisoning is caused by saxitoxin (STX)...

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Veröffentlicht in:	Harmful algae 2024-11, Vol.139, p.102723, Article 102723
Hauptverfasser:	Cho, Yuko, Hidema, Shizu, Omura, Takuo, Tsuchiya, Shigeki, Konoki, Keiichi, Oshima, Yasukatsu, Yotsu-Yamashita, Mari
Format:	Artikel
Sprache:	eng
Schlagworte:	Alexandrium catenella Amidinotransferase arginine Biosynthesis Chloroplast chloroplasts Dinoflagellate Dinoflagellida - metabolism enzyme activity enzymes fluorescence Immunostaining intermediate product LC-MS Protozoan Proteins - genetics Protozoan Proteins - metabolism Saxitoxin Saxitoxin - biosynthesis Saxitoxin - metabolism saxitoxins shellfish Shellfish Poisoning toxicity
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