Purity ~90% (SDS-PAGE). Potentially involved in T-cell development. Recombinant protein shows chemotactic activity on thymocytes, macrophages, THP-1 cells, and dendritics cells but is inactive on peripheral blood lymphocytes and neutrophils. Binds to CCR9. Binds to atypical chemokine receptor ACKR4 and mediates the recruitment of beta-arrestin (ARRB1/2) to ACKR4. Source: Recombinant protein corresponding to aa25-144 from mouse C-C Motif Chemokine 25, fused to His-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~18kD AA