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79286

Sigma-Aldrich

Phalloidin–Atto 700

suitable for fluorescence, ≥90% (HPLC)

Synonym(s):

Atto 700–Phalloidin

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About This Item

UNSPSC Code:
12352116
NACRES:
NA.32

Quality Level

assay

≥90% (HPLC)

form

powder

manufacturer/tradename

ATTO-TEC GmbH

transmittance

254 nm
700 nm

fluorescence

λex 700 nm; λem 719 nm in 0.1 M phosphate pH 7.0

λ

in methanol

suitability

suitable for fluorescence

storage temp.

−20°C

General description

Atto 700 belongs to a new generation of fluorescent labels. The dye is designed for application in the area of life science, e.g. labeling of DNA, RNA or proteins. Characteristic features of the label are strong absorption, high fluorescence quantum yield, excellent thermal and photo-stability, very good water solubility and very little triplet formation. Atto 700 is a zwitterionic dye with a net electrical charge of zero. The fluorescence is efficiently quenched by electron donors like guanine, tryptophan, etc
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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Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Legal Information

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3


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David Ochoa et al.
Molecular systems biology, 12(12), 888-888 (2016-12-03)
The coordinated regulation of protein kinases is a rapid mechanism that integrates diverse cues and swiftly determines appropriate cellular responses. However, our understanding of cellular decision-making has been limited by the small number of simultaneously monitored phospho-regulatory events. Here, we

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