The Human IL-2 yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Human IL-2 applications are for cell culture, ELISA standard, and Western Blot Control. The Human IL-2 yeast-derived recombinant protein can be purchased in multiple sizes. Human IL-2 Specifications: (Molecular Weight: 15.4 kDa) (Amino Acid Sequence: APTSSSTKKT QLQLEHLLLD LQMILNGINN YKNPKLTRML TFKFYMPKKA TELKHLQCLE EELKPLEEVL NLAQSKNFHL RPRDLISNIN VIVLELKGSE TTFMCEYADE TATIVEFLNR WITFCQSIIS TLT (133)) (Gene ID: 3558). For research use only. Made in the USA