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Microcystins are hepatotoxic cyclic heptapeptide toxins produced by cyanobacteria.[1] They are responsible for periodic poisonings of humans and livestock drinking fresh water where the blue-green algae are endemic. Microcystin-LR is a selective inhibitor of protein phosphatase 2A (PP2A) (IC50= 0.04 nM) and will completely inhibit this enzyme without affecting PP1 when used at a concentration of 0.5 nM.[2] The PP1 IC50 is about 1.7 nM. Microcystins are at least 10 times more potent as serine/threonine PP inhibitors than okadaic acid, another microalgal toxin also used for this purpose.
Reference:
[1]. Rinehart, K.L., Harada, K.-i., Namikoshi, M., et al. Nodularin, microcystin, and the configuration of Adda. J. Am. Chem. Soc. 110, 8557-8558 (1988).
[2]. Honkanen, R.E., Zwiller, J., Moore, R.E., et al. Characterization of microcystin-LR, a potent inhibitor of Type 1 and Type 2A protein phosphatases. The Journal of Biological Chemisty 265(32), 19401-19404 (1990).
Documents produit (Product Documents)
Propriétés chimiques (Chemical Properties)
Utilisez les solutions mères dans les 6 mois si elles sont conservées à -80°C, ou dans le mois si elles sont conservées à -20°C.
Pour améliorer la solubilité, réchauffez le tube à 37°C et soniquez-le pendant une durée appropriée.
Calculateurs (Calculators)Molarité / Dilution / Masse moléculaire / Conversion d’unités / Formulation in vivo / Solubilité
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