The Ferret Midkine yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Ferret Midkine applications are for cell culture, ELISA standard, and Western Blot Control. Ferret Midkine yeast-derived recombinant protein can be purchased in multiple sizes. Ferret Midkine Specifications: (Molecular Weight: 13.2 kDa) (Amino Acid Sequence: KKKDKVKKGG PGTECAEWAW GPCTPSSKDC GVGFREGTCG AQTQRTRCRV PCNWKKEFGA DCKYKFESWG ACDGGTGTKA RQGTLKKARY NAQCQETIRV TKPCTPKTKA KAKAKKGKGK D (121)) (Gene ID: 101682417). For research use only. Made in the USA