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DyLight™ 350 Phalloidin #12848
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DyLight™ 350 Phalloidin allows researchers to fluorescently label the cytoskeleton through the binding of phalloidin to F-actin. This product is not intended for use on live cells due to the toxicity associated with phalloidin. After reconstitution the stock solution provides enough material to perform 50 assays based on a 1:10 dilution and a 100 μl assay volume.
DyLight™ 350 Fluorescent Properties: Excitation: 356nm, Emission: 423nm.
Actin, a ubiquitous eukaryotic protein, is the major component of the cytoskeleton. At least six isoforms are known in mammals. Nonmuscle β- and γ-actin, also known as cytoplasmic actin, are predominantly expressed in nonmuscle cells, controlling cell structure and motility (1). Actin exists mainly as a fibrous polymer, F-actin. In response to cytoskeletal reorganizing signals during processes such as cytokinesis, endocytosis, or stress, cofilin promotes fragmentation and depolymerization of F-actin resulting in an increase in the monomeric globular form, G-actin (2). Phalloidin is a natually occuring toxic bicyclic peptide found in the deathcap toadstool, Amanita phalloides, that rapidly binds to F-actin with strong affinity (3).
Directions For Use
To make a 10X stock, reconstitute the lyophilized material in 0.5 ml pure methanol.
Fix cells for 15 minutes using fresh, methanol-free 4% formaldehyde, then rinse three times in PBS for 5 minutes each. Once fixed, please follow Cell Signaling Technology protocol for immunostaining. Following incubation of the primary and secondary antibodies, DyLight™ 350 Phalloidin can be diluted 1:10 (10 µl per 100 µl assay volume) in PBS and added to the cells. Allow to incubate for 15 minutes at room temperature, then rinse once with PBS. Coverslip slides with ProLong® Gold Antifade Reagent #9071 and examine specimen using appropriate excitation wavelength.
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For Research Use Only. Not For Use In Diagnostic Procedures.
DyLight™ is a trademark of Thermo Fisher Scientific, Inc. and its subsidiaries.
Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.