doi: 10.1242/jcs.89.1.21.
Coumarin-phalloidin: a new actin probe permitting triple immunofluorescence microscopy of the cytoskeleton
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- PMID: 2458368
- DOI: 10.1242/jcs.89.1.21
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Coumarin-phalloidin: a new actin probe permitting triple immunofluorescence microscopy of the cytoskeleton
J Cell Sci.
1988 Jan.
Abstract
7-Diethylamino-3-(4-isothiocyanotophenyl)-4-methylcoumarin (CPITC) was coupled to amino-methyldithiolanophalloidin to produce a new phalloidin derivative, coumarin-phalloidin, fluorescent in the blue region of the spectrum. Coumarin-phalloidin binds to actin with around 100-fold less affinity than unconjugated phalloidin, but with enough avidity to make it a useful stain for actin filaments. Appropriate filter combinations permit triple immunofluorescence microscopy of the cytoskeleton with fluorescein and rhodamine conjugates together with coumarin-phalloidin.
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