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Merck
모든 사진(1)

주요 문서

18846

Sigma-Aldrich

Phalloidin–Atto 655

suitable for fluorescence, ≥90.0% (sum of isomers, HPLC)

동의어(들):

Atto 655 Phalloidin

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About This Item

UNSPSC 코드:
12352108
NACRES:
NA.32

Quality Level

분석

≥90.0% (sum of isomers, HPLC)

양식

solid

제조업체/상표

ATTO-TEC GmbH

투과

254 nm
655 nm

형광

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

UV 흡수

λ: 651- 657 nm Amax

적합성

suitable for fluorescence

저장 온도

−20°C

일반 설명

Atto 655 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, good fluorescence quantum yield, excellent thermal and photo-stability, outstanding ozone resistance, very good water solubility, and very little triplet formation. Atto 655 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.

애플리케이션

Fluorescent conjugates of phalloidin, rhodamine-phalloidin staining reagents, such as Phalloidin–Atto 655 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-dihydroxyleucine) is accessible for chemical modifications without appreciable loss of affinity for actin.

법적 정보

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 Code

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

개인 보호 장비

Eyeshields, Gloves, type N95 (US)


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문서

Atto dyes are a series of fluorescent dyes that meet the critical needs of modern fluorescent technologies.

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