Invitrogen™ C5AR1 Recombinant Mouse Monoclonal Antibody (32-G1)

Description

Specificity: The 32-G1 antibody recognizes C5aR which has its serine 334 phosphorylated. The mAb 32-G1 reacted specifically with a C5aR peptide that contained phosphoserine 334 and also reacted with C5aRs that were isolated from C5a-stimulated, transfected RBL-C5aR cells. It did not recognize a receptor mutant (C5aR-S--) with alanine replacement of all six C-terminal serine phosphorylation sites. Antibody 32-G1 specifically reacts with C5aR phosphoserine 334, independent of the phosphorylation state of the neighboring serine residues. Studies with Bt2cAMP-treated U937 cells show that 32-G1 specifically reacts with ligand-activated C5aR at endogenous receptor expression levels but only weakly recognizes C5aR isolated from unstimulated cells.

CD88, also known as C5aR1, is a C5a Anaphylatoxin Receptor that mediates the effects of one of the most potent chemotactic agents known. C5AR1 has been implicated in asthma, and its expression has been reported in myeloid blood cells, brain, liver, lung, spleen, heart, kidney, and intestinal tract. CD88 is the receptor for the chemotactic and inflammatory peptide anaphylatoxin C5a. Functionally, CD88 stimulates chemotaxis, granule enzyme release and superoxide anion production. CD88 is also a component of the classical pathway of the complement cascade; it may be involved with tissue injury associated with ischemia or sepsis and it may be a component of the membrane attack complex. Diseases associated with CD88 include Mannose-Binding Lectin Deficiency and Systemic Lupus Erythematosus.