475815-M

Microcystin-LR, Microcystis aeruginosa

Cyclic heptapeptide toxin isolated from the freshwater cyanobacteria Microcystis aeruginosa.

• 别名: Microcystin-LR, Microcystis aeruginosa, MCYST-LR
• 经验公式（希尔记法）: C₄₉H₇₄N₁₀O₁₂
• CAS号: 101043-37-2
• 分子量: 995.17
• MDL號碼: MFCD01774058
• 分類程式碼代碼: 12352200

属性

• 品質等級: 100
• 化驗: ≥95% (HPLC)
• 形狀: lyophilized solid
• 製造商／商標名: Calbiochem^®
• 儲存條件: OK to freeze
• 顏色: pale yellow
• 溶解度: methanol: 2 mg/mL; DMSO: 2.5 mg/mL
• 儲存溫度: −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
• InChI 密鑰: ZYZCGGRZINLQBL-GWRQVWKTSA-N

说明

一般說明

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.

生化／生理作用

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

警告

Toxicity: Highly Toxic (H)

準備報告

Further dilute with aqueous buffer just prior to use.

重構

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

其他說明

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.

法律資訊

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

安全信息

• 象形圖: GHS06
• 訊號詞: Danger
• 危險聲明: H300 + H310,H315,H317,H319,H335
• 防範說明: P261 - P262 - P280 - P301 + P310 - P302 + P352 + P310 - P305 + P351 + P338
• 危險分類: Acute Tox. 2 Dermal - Acute Tox. 2 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
• 標靶器官: Respiratory system
• 儲存類別代碼: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• 水污染物質分類（WGK）: WGK 3
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable