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F-actin Staining Kit - Green Fluorescence | Cytopainter (ab112125) fluorescence imaging kits are a set of fluorescence imaging tools for labeling sub-cellular organelles such as lysosomes, mitochondria, and actin filaments.


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Functional Studies - F-actin Staining Kit - Green Fluorescence - Cytopainter (AB112125), expandable thumbnail

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Key facts

Sample types
Tissue, Suspension cells, Adherent cells
Assay type
Cell-based (qualitative)
Reactive species
Mammals

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Target data

Function

Actin is a highly conserved protein that polymerizes to produce filaments that form cross-linked networks in the cytoplasm of cells (PubMed:25255767, PubMed:29581253). Actin exists in both monomeric (G-actin) and polymeric (F-actin) forms, both forms playing key functions, such as cell motility and contraction (PubMed:29581253). In addition to their role in the cytoplasmic cytoskeleton, G- and F-actin also localize in the nucleus, and regulate gene transcription and motility and repair of damaged DNA (PubMed:29925947). Part of the ACTR1A/ACTB filament around which the dynactin complex is built. The dynactin multiprotein complex activates the molecular motor dynein for ultra-processive transport along microtubules (By similarity).

Alternative names

What's included?

500 Test
Components
Green Fluorescent Phalloidin Conjugate
1 x 50 µL
Labeling Buffer
1 x 50 mL

Recommended products

F-actin Staining Kit - Green Fluorescence | Cytopainter (ab112125) fluorescence imaging kits are a set of fluorescence imaging tools for labeling sub-cellular organelles such as lysosomes, mitochondria, and actin filaments.

Key facts

Sample types
Tissue, Suspension cells, Adherent cells
Assay type
Cell-based (qualitative)
Reactive species
Mammals
Assay Platform
Fluorescence microscope

Storage

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
-20°C
Appropriate long-term storage conditions
-20°C
Storage information
-20°C

Notes

F-actin Staining Kit - Green Fluorescence | Cytopainter (ab112125) fluorescence imaging kits are a set of fluorescence imaging tools for labeling sub-cellular organelles such as lysosomes, mitochondria, and actin filaments. The selective staining of cell compartments provides a powerful method for studying cellular events in a spatial and temporal context.

ab112125 is designed to stain F-actins in fixed cells with green fluorescence. The kit uses a green fluorescent phalloidin conjugate that is selectively bound to F-actins. This green fluorescent phalloidin conjugate is a high-affinity probe for F-actins. When used at nanomolar concentrations, phallotoxins are convenient probes for labeling, identifying and quantitating F-actins in formaldehyde-fixed and permeabilized tissue sections, cell cultures or cell-free experiments.

ab112125 provides all the essential components with an optimized staining protocol, which is robust requiring minimal hands-on time. It is an excellent tool for preserving the fluorescent images of particular cells. The phalloidin conjugate has spectral properties similar to those of FITC (Ex/Em = 500/520 nm). It can also be used for fluorescence microscope demonstrations using FITC filter (Ex/Em = 490/525 nm).

ab112125 should be stored dessicated.

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.
Activity summary

F-actin also known as filamentous actin is an essential structural protein found within the cytoskeleton of eukaryotic cells. Its alternate names include actin filaments or microfilaments. The protein consists of polymerized monomers of G-actin each with a molecular weight of roughly 42 kDa. F-actin is expressed abundantly in muscle cells and non-muscle cells alike providing structural support and facilitating cellular movements. Actin staining is a common method used in labs to visualize these dynamic structures often employing phalloidin staining a toxin that stabilizes actin filaments conjugated with fluorescent labels such as Phalloidin 594 Phalloidin 647 or Phalloidin 488 for imaging purposes.

Biological function summary

The actin cytoskeleton plays integral roles in maintaining cell shape providing mechanical resistance against deformation and driving important cellular processes such as endocytosis cell division and motility. F-actin forms part of numerous protein complexes interacting with other proteins like myosin to facilitate muscle contraction and cellular transport. Within cells F-actin is dynamic readily polymerizing and depolymerizing in response to cellular signaling making it essential for cytoskeletal remodeling and cellular adaptability.

Pathways

F-actin is central to various signaling cascades underlying processes like cell signaling and intracellular transport. Notably it participates in the Rho family GTPase pathway affecting cell cytoskeleton organization and motility. It also interacts with proteins like cofilin and profilin which regulate actin polymerization and treadmilling dynamics respectively. These interactions highlight F-actin's involvement in complex cellular pathway regulation processes essential for maintaining cellular homeostasis and adaptability.

Associated diseases and disorders

Abnormal regulation or mutations in actin-related proteins can lead to conditions such as cancer and cardiomyopathies. For example during metastasis cancer cells exploit the dynamic nature of F-actin for enhanced migratory capacity. In cardiac muscle cells actin interacts with other proteins like tropomyosin and mutations in these genes can disrupt normal heart function leading to cardiomyopathies. As such F-actin not only represents a critical component of the cellular structure but also serves as a pivotal target for understanding disease mechanisms and potential therapeutic intervention points.

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1 product image

  • Functional Studies - F-actin Staining Kit - Green Fluorescence - Cytopainter (ab112125), expandable thumbnail

    Functional Studies - F-actin Staining Kit - Green Fluorescence - Cytopainter (ab112125)

    Left Panel: Cells labeled with 1X Green Fluorescent Phalloidin Conjugate for 30 minutes only.
    Right Panel: Cells treated with phalloidin for 10 minutes, then stained with Green Fluorescent Phalloidin Conjugate
    for 30 minutes.

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Product protocols

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