Purity > 90% as determined by SDS-PAGE. MW: 39.3kDa. Full Length of Mature Protein: 24-134aa. N-terminal GST-tagged. Homo sapiens (Human). Inhibits hopoiesis and stimulates chotaxis. Chotactic in vitro for thymocytes and activated T-cells, but not for B-cells, macrophages, or neutrophils. Shows preferential activity towards naive T-cells. May play a role in mediating homing of lymphocytes to secondary lymphoid organs. Binds to atypical chokine receptor ACKR4 and mediates the recruitment of beta-arrestin (ARRB1/2) to ACKR4.