Actin Rabbit

Actin Rabbit
Cat. No.
BT12178
Source
Rabbit Muscle.
Synonyms
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Greater than 98.0% as determined by SDS-PAGE.
Usage
Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. They may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Ultra pure Actin consists in the alpha-skeletal muscle isoform and is purified from rabbit striated muscle.
The purification method used (according to Spudich & Watts) results in a highly purified protein having a Molecular mass of 43,000 dalton.

Product Specs

Introduction
Actin, a muscle protein found in the I band of myofibrils, works in conjunction with myosin to facilitate muscle contraction and relaxation. Each actin protomer can bind one ATP molecule and possesses a high-affinity site for calcium or magnesium ions, along with multiple low-affinity sites. While actin exists as a monomer at low salt concentrations, it rapidly forms filaments as salt concentration increases, leading to ATP hydrolysis. It exists in two forms: globular (G-actin) and fibrous (F-actin). Actin is present in all eukaryotic cells, except nematode sperm. As a highly conserved protein, it exhibits less than 20% variation across diverse species, from algae to humans. Beyond muscle function, actin plays crucial roles in cell motility, division, cytokinesis, vesicle and organelle transport, signaling, and the formation and maintenance of cell junctions and shape.
Description
This product consists of ultra-pure alpha-skeletal muscle actin, purified from rabbit striated muscle. The purification process, based on the method by Spudich & Watts, yields a highly purified protein with a molecular weight of 43,000 daltons.
Physical Appearance
Sterile-filtered, lyophilized powder with a white appearance.
Formulation
The protein is provided in a lyophilized form, originally prepared from a 1 mg/ml solution containing 10 mM Tris/HCl buffer (pH 8.0), 0.2 mM CaCl2, 0.2 mM ATP, 1 mM DTT, and 0.5% (w/v) SDS.
Solubility

To reconstitute the lyophilized actin, it is recommended to dissolve it in sterile 18 MΩ-cm H2O at a concentration of at least 1 mg/ml. The resulting solution can then be further diluted in other aqueous solutions as needed.

Stability

Store the lyophilized actin at a temperature between 2-8 °C. Avoid freezing. After reconstitution, the actin solution should be stored at 4 °C and used within 2-7 days. For long-term storage, freeze the reconstituted actin solution below -18 °C.

Repeated freezing and thawing should be avoided.

Purity
The purity of this product is greater than 98.0%, as determined by SDS-PAGE analysis.
Source
Rabbit Muscle.

Product Science Overview

Actin Isoforms

In mammals, there are six known actin isoforms, which can be broadly categorized into muscle and non-muscle actins. The non-muscle actins, β-actin and γ-actin, are ubiquitously expressed in various cell types and are essential for maintaining the cytoskeleton’s integrity and facilitating cell movement . The muscle actins, including α-cardiac, α-skeletal, and smooth muscle actins, are primarily found in muscle tissues and are involved in muscle contraction.

β-Actin

β-Actin is a major component of the cytoskeleton and is involved in various cellular processes, including cell division, signaling, and motility. It is encoded by the ACTB gene and is highly conserved across different species . Mutations in the ACTB gene can lead to various disorders, including Baraitser-Winter syndrome, which is characterized by intellectual disability and distinctive facial features .

Rabbit Monoclonal Antibodies

Rabbit monoclonal antibodies against β-actin are widely used in research to study actin’s role in cellular processes. These antibodies are produced by immunizing rabbits with a synthetic peptide corresponding to residues near the amino-terminus of human β-actin protein . The resulting antibodies are highly specific and do not cross-react with other actin isoforms, making them valuable tools for studying β-actin in various experimental settings .

Applications

Rabbit monoclonal antibodies against β-actin are used in various applications, including Western blotting, immunohistochemistry, immunofluorescence, and flow cytometry . These antibodies are essential for detecting and quantifying β-actin in different cell types and tissues, providing insights into actin’s role in cellular processes and disease mechanisms.

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