475815-M

Microcystin-LR, Microcystis aeruginosa

Cyclic heptapeptide toxin isolated from the freshwater cyanobacteria Microcystis aeruginosa.

• Synonim(y): Microcystin-LR, Microcystis aeruginosa, MCYST-LR
• Wzór empiryczny (zapis Hilla): C₄₉H₇₄N₁₀O₁₂
• Numer CAS: 101043-37-2
• Masa cząsteczkowa: 995.17
• Numer MDL: MFCD01774058
• Kod UNSPSC: 12352200

Właściwości

• Poziom jakości: 100
• Próba: ≥95% (HPLC)
• Postać: lyophilized solid
• producent / nazwa handlowa: Calbiochem^®
• warunki przechowywania: OK to freeze
• kolor: pale yellow
• rozpuszczalność: methanol: 2 mg/mL; DMSO: 2.5 mg/mL
• temp. przechowywania: −20°C
• InChI: 1S/C49H74N10O12/c1-26(2)23-37-46(66)58-40(48(69)70)30(6)42(62)55-35(17-14-22-52-49(50)51)45(65)54-34(19-18-27(3)24-28(4)38(71-10)25-33-15-12-11-13-16-33)29(5)41(61)56-36(47(67)68)20-21-39(60)59(9)32(8)44(64)53-31(7)43(63)57-37/h11-13,15-16,18-19,24,26,28-31,34-38,40H,8,14,17,20-23,25H2,1-7,9-10H3,(H,53,64)(H,54,65)(H,55,62)(H,56,61)(H,57,63)(H,58,66)(H,67,68)(H,69,70)(H4,50,51,52)/b19-18+,27-24+/t28-,29-,30-,31+,34-,35-,36+,37-,38-,40+/m0/s1
• Klucz InChI: ZYZCGGRZINLQBL-GWRQVWKTSA-N

Opis

Opis ogólny

Cyclic heptapeptide toxin isolated from the freshwater cyanobacteria Microcystis aeruginosa. Potent inhibitor of protein phosphatase 1 (PP1) and protein phosphatase 2A (PP2A). Unlike Okadaic Acid (Cat. No. 495604), microcystin-LR is effective on both PP1 (IC₅₀ = 1.7 nM) and PP2A (IC₅₀ = 40 pM). Reacts with phosphatase in a two-step mechanism involving rapid binding and inactivation of the catalytic subunit followed by slower covalent interactions. Has no effect on protein kinases, making it useful for reducing the effect of contaminating phosphatase activities in protein kinase assays. A 2.5 mM (250 µg/100 µl) solution of Microcystin-LR, Microcystis aeruginosa (Cat. No. 475821) in DMSO is also available.

Cyclic heptapeptide toxin isolated from the freshwater cyanobacteria, Microcystis aeruginosa. Potent inhibitor of protein phosphatase 1 (PP1) and protein phosphatase 2A (PP2A). Unlike Okadaic Acid (Cat. No. 495604), microcystin-LR is effective on both PP1 (IC₅₀ = 1.7 nM) and PP2A (IC₅₀ = 40 pM). Has no effect on protein kinases, making it useful for reducing contaminating phosphatase activities in protein kinase assays.

Działania biochem./fizjol.

Target IC₅₀: 1.7 nM and 40 pM against PP1 and PP2A, respectively

Ostrzeżenie

Toxicity: Highly Toxic (H)

Uwaga dotycząca przygotowania

Further dilute with aqueous buffer just prior to use.

Rekonstytucja

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C. Unstable at > pH 7.7.

Inne uwagi

Craig, M., et al. 1996. Biochem. Cell Biol. 74, 569.
Nishiwaki, R., et al. 1994. Cancer Lett. 83, 283.
Amick, G.D., et al. 1992. Biochem. J.287, 1019.
Davidson, H.W., et al. 1992. J. Cell Biol.116, 1343.
Nishiwaki-Matsushima, R., et al. 1992. J. Cancer Res. Clin. Oncol. 118, 420.
Cohen, P., et al. 1990. Trends Biochem. Sci.15, 98.
MacKintosh, C., et al. 1990. FEBS Lett.264, 187.
Cohen, P., et al. 1989. FEBS Lett.250, 596.
Carmichael, W.W. 1988. in Handbook of Natural Toxins3: Marine Toxins and Venoms(Tu, A.T., Ed.) p. 121, Decker, New York.

Informacje prawne

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

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Informacja o środkach bezpieczeństwa

• Piktogramy: GHS06
• Hasło ostrzegawcze: Danger
• Zwroty wskazujące rodzaj zagrożenia: H300 + H310,H315,H317,H319,H335
• Zwroty wskazujące środki ostrożności: P261 - P262 - P280 - P301 + P310 - P302 + P352 + P310 - P305 + P351 + P338
• Klasyfikacja zagrożeń: Acute Tox. 2 Dermal - Acute Tox. 2 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
• Organy docelowe: Respiratory system
• Kod klasy składowania: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Klasa zagrożenia wodnego (WGK): WGK 3
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable