Recombinant Human RANTES produced in E.Coli is a non-glycosylated, Polypeptide chain containing 68 amino acids and having a molecular mass of 7809.2 Dalton.The rHuRANTESis purified by proprietary chromatographic techniques. The sequence of the first five N-terminal amino acids was determined and was found to be Ser-Pro-Tyr-Ser-Ser.