Mouse alpha 2-Macroglobulin Antibody

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Detection of Mouse  alpha 2-Macroglobulin by Western Blot.
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Mouse alpha 2-Macroglobulin Antibody Summary

Species Reactivity
Detects mouse alpha 2-Macroglobulin in direct ELISAs and Western blots. In direct ELISA, less than 2% cross-reactivity with human alpha 2‑Macroglobulin, recombinant rat (rr)  alpha 2-Macroglobulin, and rr beta 2-Macroglobulin is observed.
Polyclonal Sheep IgG
Antigen Affinity-purified
Mouse serum-derived alpha 2-Macroglobulin
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.1 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Mouse a<SUB>2</SUB>-Macroglobulin antibody by Western Blot. View Larger

Detection of Mouse alpha 2-Macroglobulin by Western Blot. Western blot shows samples of purified a2-Macroglobulin from mouse sera. PVDF membrane was probed with 0.1 µg/mL Sheep Anti-Mouse a2-Macroglobulin Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5798) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band for a2-Macroglobulin was detected at approximately 180 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: alpha 2-Macroglobulin

alpha 2-Macroglobulin (alpha 2 macroglobulin; also A2M and MAM) is a 185 kDa member of the protease inhibitor I39 family of proteins. It is secreted by the liver, circulates at a constant level in the blood, binds multiple growth factors, inhibits a wide variety of proteinases via steric trapping, is cleared by cell surface receptors and likely exists as a tetramer. Mature mouse A2M is 1471 amino acids (aa) in length. It is cleaved between Arg1239 and Asp1240 to generate two subunits, one that is 165 kDa in size and 1215 aa in length and a second that is 35 kDa in size and 256 aa in length. The protease inhibitor region (aa 686-744) is on the large subunit, while the receptor binding segment (aa 1395-1482) is on the smaller subunit. A2M has a counterpart gene termed A2M-P that is associated with pregnancy. The A2M-P molecule shares 56% aa identity with mouse A2M. Notably, mouse A2M-P is closer in aa sequence to human A2M (72%) and rat A2M (91%) than mouse A2M is to human A2M (59%) and rat A2M (56%).

Entrez Gene IDs
2 (Human)
Alternate Names
A2M; alpha 2Macroglobulin; alpha 2-Macroglobulin; alpha-2-M; alpha-2-macroglobulin; C3 and PZP-like alpha-2-macroglobulin domain-containing protein 5; CPAMD5; CPAMD5DKFZp779B086; FWP007; S863-7

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