Monocyte Chemotactic Protein 1 (MCP-1), also known as CCL2, is thought to be produced by injured or infected tissues. MCP-1 signals through G Protein-coupled receptors, CCR2 and CCR4, to recruit memory T cells, monocytes and dendritic cells. Recombinant MCP-1 is a non-glycosylated Protein containing 76 amino acids, with a molecular weight of 8.6 kDa.