Product nameAnti-alpha 2 Macroglobulin antibody
See all alpha 2 Macroglobulin primary antibodies
DescriptionRabbit polyclonal to alpha 2 Macroglobulin
Tested applicationsSuitable for: WB, ICC/IFmore details
Species reactivityReacts with: Human
Predicted to work with: Cow
Synthetic peptide corresponding to Human alpha 2 Macroglobulin aa 1450 to the C-terminus (C terminal) conjugated to keyhole limpet haemocyanin.
(Peptide available as
- This antibody gave a positive signal in both human plasma total protein and human placenta tissue lysates.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Storage bufferPreservative: 0.02% Sodium Azide
Constituents: 1% BSA, PBS, pH 7.4
Concentration information loading...
PurityImmunogen affinity purified
Our Abpromise guarantee covers the use of ab84176 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||Use a concentration of 1 µg/ml. Detects a band of approximately 185 kDa (predicted molecular weight: 163 kDa).|
|ICC/IF||Use a concentration of 1 µg/ml.|
FunctionIs able to inhibit all four classes of proteinases by a unique 'trapping' mechanism. This protein has a peptide stretch, called the 'bait region' which contains specific cleavage sites for different proteinases. When a proteinase cleaves the bait region, a conformational change is induced in the protein which traps the proteinase. The entrapped enzyme remains active against low molecular weight substrates (activity against high molecular weight substrates is greatly reduced). Following cleavage in the bait region a thioester bond is hydrolyzed and mediates the covalent binding of the protein to the proteinase.
Tissue specificitySecreted in plasma.
Sequence similaritiesBelongs to the protease inhibitor I39 (alpha-2-macroglobulin) family.
Developmental stageContrary to the rat protein, which is an acute phase protein, this protein is always present at high levels in circulation.
- Information by UniProt
- A2m antibody
- A2MG_HUMAN antibody
- Alpha 2 M antibody
All lanes : Anti-alpha 2 Macroglobulin antibody (ab84176) at 1 µg/ml
Lane 1 : Human Plasma Total Protein Lysate
Lane 2 : Human placenta tissue lysate - total protein (ab29745)
Lysates/proteins at 10 µg per lane.
All lanes : Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution
Developed using the ECL technique.
Performed under reducing conditions.
Predicted band size: 163 kDa
Observed band size: 185 kDa why is the actual band size different from the predicted?
Additional bands at: 48 kDa. We are unsure as to the identity of these extra bands.
Exposure time: 15 minutes
Human Alpha-2-macroglobulin precursor contains a number of potential glycosylation sites (SwissProt) which may explain its migration at a higher molecular weight than predicted.
ICC/IF image of ab84176 stained HeLa cells. The cells were 4% PFA fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab84176, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM. This antibody also gave a positive result in 4% PFA fixed (10 min) HepG2 cells at 1µg/ml, and in 100% methanol fixed (5 min) MCF7 cells at 5µg/ml.
ab84176 has not yet been referenced specifically in any publications.