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Merck

04497

Sigma-Aldrich

Phalloidin–Atto 665

suitable for fluorescence, ≥90% (HPLC)

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About This Item

分類程式碼代碼:
12352116
NACRES:
NA.32

品質等級

化驗

≥90% (HPLC)

製造商/商標名

ATTO-TEC GmbH

螢光

λex 663 nm; λem 684 nm in 0.1 M phosphate pH 7.0

適合性

suitable for fluorescence

儲存溫度

−20°C

一般說明

Atto 665 Phalloidin is a new fluorescent label closely related to Atto 647N. As such the dye shows an extraordinarily high fluorescence quantum yield, excellent thermal and photo-stability, outstanding ozone resistance, and very little triplet formation. Atto 665 Phalloidin is a cationic dye (charge +1). In common with most Atto-labels, absorption and fluorescence are independent of pH in the range of 2 to 11, used in typical applications.
Phalloidin is a fungal toxin isolated from the poisonous mushroom Amanita phalloides. Its toxicity is attributed to the ability to bind F actin in liver and muscle cells. As a result of binding phalloidin, actin filaments become strongly stabilized. Phalloidin has been found to bind only to polymeric and oligomeric forms of actin, and not to monomeric actin. The dissociation constant of the actin-phalloidin complex has been determined to be on the order of 3 x 10-8. Phalloidin differs from amanitin in rapidity of action; at high dose levels, death of mice or rats occurs within 1 or 2 hours. Fluorescent conjugates of phalloidin are used to label actin filaments for histological applications. Some structural features of phalloidin are required for the binding to actin. However, the side chain of amino acid 7 (g-d-dihydroxyleucine) is accessible for chemical modifications without appreciable loss of affinity for actin.

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法律資訊

This product is for Research use only. In case of intended commercialization, please contact the IP-holder (ATTO-TEC GmbH, Germany) for licensing.

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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