CCL21 is a human chemokine that recruits normal immune cells and metastasizing tumor cells to lymph nodes through activation of the G protein-coupled receptor CCR7. Originally called SLC or exodus-2, CCL21 is expressed in high endothelial venules of lymph nodes, spleen, and Peyer's patches as well as lymphatic endothelium in peripheral tissues. CCL21 directs the migration of CCR7-expressing lymphocytes and antigen activated dendritic cells. CCL21 contains 6 conserved cysteines, in contrast to the 4 that are more typical of CC chemokines. CCL21 induces chemotactic migration of thymocytes and activated T-cells, but not B-cells, macrophages, or neutrophils.
| Purity|| Assessed by HPLC, Mass Spectrometry, and NMR |
| Source|| Human protein expressed in E. coli|
| Physical form|| Lyophilized powder|
| Solubility|| Freely Soluble in Water|
| Accession #|| |
| Endotoxin level|| <0.01 EU per 1µg of the protein by LAL method|