|Detection of Integrin alpha M/CD11b in Mouse Bone Marrow Cells by Flow Cytometry. Mouse bone marrow cells were stained with Rat Anti-Mouse Gr‑1/Ly‑6G APC‑conjugated Monoclonal Antibody (Catalog # FAB1037A) and either (A) Rat Anti-Mouse Integrin alpha M/CD11b Alexa Fluor® 405‑conjugated Monoclonal Antibody (Catalog # FAB1124V) or (B) Rat IgG2B Alexa Fluor 405 Isotype Control (Catalog # IC013V). View our protocol for Staining Membrane-associated Proteins.|
The Integrin family proteins are heterodimeric transmembrane receptors composed of an alpha and a beta subunit. The Integrin alpha M subunit, also known as MAC-1 alpha subunit or CD11b, combines with the Integrin beta 2 subunit (CD18) to form the non-covalent heterodimer Integrin alpha M/ beta 2, also known as MAC-1 and Complement Receptor type 3 (CR3). Integrin alpha M/ beta 2 is expressed on granulocytes, macrophages, dendritic cells and natural killer cells. Upon activation, alpha M/ beta 2 can bind several ligands (including ICAM-1, fibrinogen, and the C3 complement fragment, C3bi) to mediate phagocyte adhesion, migration and ingestion of complement-opsonized particles. The mouse extracellular domain (ECD) shares 87% and 74% amino acid sequence identity with rat and human ECD, respectively (3,4).
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