BF 594 Phalloidin | CAS 330626-83-0

BF 594 Phalloidin is a fluorescent phallotoxin conjugate used to visualize filamentous actin (F-actin) in fixed cells and tissue sections. The BF 594 fluorophore provides bright orange-red fluorescence for actin cytoskeleton staining workflows commonly used in fluorescence microscopy and quantitative image analysis. Because phalloidin binds F-actin with high affinity, this reagent is frequently selected when robust actin localization and clear filament contrast are required.

1. F-Actin Fluorescence Microscopy

BF 594 Phalloidin is widely used in fluorescence microscopy for staining filamentous actin networks in cultured cells, allowing researchers to map stress fibers, cortical actin, and actin-rich structures with strong spatial contrast. Imaging workflows often pair the orange-red emission with standard filter sets for actin cytoskeleton studies, including comparisons of cytoskeletal organization across experimental conditions such as perturbations to cell adhesion or migration. Laboratories using confocal, widefield, or spinning-disk microscopy frequently rely on phalloidin-based staining to generate consistent F-actin labeling for downstream morphometric analysis.

2. Multiplex Cytoskeleton Co-Labeling

BF 594 Phalloidin supports multiplex immunofluorescence and multi-channel cellular imaging strategies where actin is one component of a broader labeling panel. Researchers commonly combine BF 594 Phalloidin with antibodies targeting focal adhesion markers, microtubules, intermediate filaments, or nuclear stains, enabling coordinated visualization of cytoskeletal architecture and subcellular organization. This reagent is particularly useful when a stable, F-actin-specific fluorescent signal is needed alongside spectrally distinct probes in the same sample for colocalization studies and quantitative co-registration.

3. Fixed-Cell Actin Quantification

BF 594 Phalloidin is frequently selected for quantitative image analysis of actin filament content and organization in fixed-cell assays, including experiments that require reproducible staining across many samples. Cell biology groups use phalloidin labeling to quantify parameters such as filament intensity, alignment, and structural features associated with changes in cytoskeletal dynamics. In these workflows, the F-actin-directed binding helps reduce ambiguity from non-filamentous actin species, improving interpretability of actin-focused readouts in microscopy-based bioassays and screening-adjacent studies.

4. Tissue Section Actin Staining

BF 594 Phalloidin is applied to fluorescence staining of actin in prepared tissue sections to visualize cytoskeletal organization in situ. Histology and tissue imaging workflows use this reagent to highlight actin-rich regions associated with cell morphology and structural remodeling within the tissue context. When paired with compatible mounting and imaging protocols, BF 594 Phalloidin enables researchers to examine actin architecture across defined anatomical regions and to compare structural phenotypes between experimental groups using fluorescence microscopy.