Chemotaxis Induced by CCL13/MCP‑4 and Neutralization by Human CCL13/|
Recombinant Human CCL13/
MCP‑4 (Catalog # 327‑P4) chemoattracts the BaF3 mouse pro‑B cell line transfected with human CCR2A in a dose dependent manner (orange line). The amount of cells that migrated through to the lower chemotaxis chamber was measured by Resazurin (Catalog # AR002). Chemotaxis elicited by Recombinant Human CCL13/MCP‑4 (2 µg/mL) is neutralized (green line) by increasing concentrations of Mouse Anti‑Human CCL13/
MCP‑4 Monoclonal Antibody (Catalog # MAB327). The ND50 is typically 10‑30 µg/mL.
CCL13, also known as Monocyte Chemoattractant Protein-4 (MCP-4), is a CC chemokine that acts as a chemoattractant for monocytes, eosinophils and T cells and as an activator of basophils. Human CCL13 cDNA encodes a 98 amino acid residue precursor protein with a 23 amino acid residue hydrophobic signal peptide that is cleaved to yield an 8 kDa, 75 aa mature CCL13. Mature CCL13 lacks any potential N-glycosylation sites and shares a pyroglutamate proline motif with other human MCP proteins. Human CCL13 is most homologous to MCP-1, 3 and Eotaxin, exhibiting approximately 65-66% amino acid sequence identity. CCL13 mRNA is expressed by a number of activated cell types, including endothelial cells, macrophages, bronchial epithelium and type II alveolar cells, and perhaps lymphocytes. The bioactivities of CCL13 are mediated by the CC chemokine receptors CCR-2 and CCR-3.
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