Description
Key facts
Detection method:Colorimetric,
Sample types:Plasma, Serum,
Reacts with:Human,
Assay type:Competitive,
Sensitivity:= 1 µg/mL,
Range:1.25 - 40 µg/mL,
Assay time:3h,
Assay Platform:Microplate
Product details:
Abcam's alpha 2 Macroglobulin Human
in vitro
competitive ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of alpha 2 Macroglobulin in plasma and serum.
An alpha 2 Macroglobulin specific antibody has been precoated onto 96-well plates and blocked. Standards or test samples are added to the wells and subsequently biotinylated alpha 2 Macroglobulin is added and then followed by washing with wash buffer. Streptavidin-Peroxidase Conjugate is added and unbound conjugates are washed away with wash buffer. TMB is then used to visualize Streptavidin-Peroxidase enzymatic reaction. TMB is catalyzed by Streptavidin-Peroxidase to produce a blue color product that changes into yellow after adding acidic stop solution. The density of yellow coloration is inversely proportional to the amount of alpha 2 Macroglobulin captured in plate.
The entire kit may be stored at -20°C for long term storage before reconstitution - Avoid repeated freeze-thaw cycles.
Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions--20°C, Appropriate long-term storage conditions-Multi, Storage information-Please refer to protocols
Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Alpha-2-macroglobulin also known as alpha-2-M and A2M is a large glycoprotein with a molecular mass of approximately 725 kDa. It is expressed in the liver and is found in high concentrations in the blood plasma. This protein functions mechanically as a broad-spectrum protease inhibitor. It can trap proteases within its structure preventing them from accessing substrates. Additionally alpha-2-macroglobulin can bind to cytokines and growth factors altering their availability and activities.
Biological function summary
Alpha-2-macroglobulin plays an important role in maintaining homeostasis by regulating protease activities and modulating immune system reactions. It does not form a permanent complex but can transiently associate with the proteases and various molecules mentioned. By interacting with proteases it controls processes like coagulation and fibrinolysis and participates in the clearance of proteinases and growth factors from the circulation. It influences cell signaling pathways and inflammatory responses highlighting its significance in maintaining balance within the body.
Pathways
Alpha-2-macroglobulin is an important component in the immune response and coagulation pathways. In the complement system it binds with complement components to regulate their activities. It associates with proteins such as plasmin and thrombin which are important for blood clotting and fibrinolysis. These relationships emphasize the protein's involvement in both protective mechanisms against pathogens and the regulation of blood coagulation and breakdown connecting the immune and hemostatic systems.
Alpha-2-macroglobulin has been linked to Alzheimer's disease and liver diseases. In Alzheimer's altered levels of this protein might affect the amyloid-beta peptide clearance due to its protease inhibition and binding properties. It associates with proteins like lipoprotein receptor-related protein-1 (LRP1) influencing amyloid-beta metabolism. In liver diseases its levels can indicate liver dysfunction or inflammation given its synthesis in the liver and can relate to proteins involved in inflammation such as cytokines. Its modulation of protease activity makes it a critical target in understanding these disorders.
