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Sigma-Aldrich

Phalloidin–Atto 565

suitable for fluorescence, ≥80.0% (HPLC)

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About This Item

UNSPSC Code:
12352108
NACRES:
NA.32

Quality Level

100

Assay

≥80.0% (HPLC)

form

solid

mol wt

Mw 1394 g/mol

manufacturer/tradename

ATTO-TEC GmbH

λ

in methanol

UV absorption

λ: 562.0-568.0 nm Amax

suitability

suitable for fluorescence

storage temp.

−20°C

General description

Atto 565 is a novel fluorescent label that belongs to the class of Rhodamine dyes. It shows a strong absorption, high fluorescence quantum yield, high thermal and photostability, and a very little triplet formation. Atto 565 consists of a mixture of two isomers with practically identical optical absorption and emission 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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Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Atto 565 BioReagent, suitable for fluorescence

Sigma-Aldrich

75784

Atto 565

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We previously developed a 14-day culture protocol under potentially GMP, chemically defined conditions, to generate chondroprogenitors from human embryonic stem cells (hESCs). In vivo work has confirmed the cartilage repair capacity of these cells in a nude rat osteochondral defect
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Biology open, 6(12), 1876-1888 (2017-11-11)
During
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Cell reports, 34(2), 108608-108608 (2021-01-14)
Hereditary DNA repair defects affect tissues differently, suggesting that in vivo cells respond differently to DNA damage. Knowledge of the DNA damage response, however, is largely based on in vitro and cell culture studies, and it is currently unclear whether DNA repair
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Scientific reports, 10(1), 11551-11551 (2020-07-16)
Zebrafish can regenerate their damaged hearts throughout their lifespan. It is, however, unknown, whether regeneration remains effective when challenged with successive cycles of cardiac damage in the same animals. Here, we assessed ventricular restoration after two, three and six cryoinjuries
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Nature materials, 19(9), 1026-1035 (2020-04-29)
The symmetry breaking of protein distribution and cytoskeleton organization is an essential aspect for the development of apicobasal polarity. In embryonic cells this process is largely cell autonomous, while differentiated epithelial cells collectively polarize during epithelium formation. Here, we demonstrate
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Atto dyes are a series of fluorescent dyes that meet the critical needs of modern fluorescent technologies.

Atto Dyes for Superior Fluorescent Imaging

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

Atto Dyes for Superior Fluorescent Imaging

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

Atto Dyes for Superior Fluorescent Imaging

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

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