The Dolphin IL-31 yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Dolphin IL-31 applications are for cell culture, ELISA standard, and Western Blot Control. Dolphin IL-31 yeast-derived recombinant protein can be purchased in multiple sizes. Dolphin IL-31 Specifications: (Molecular Weight: 14.8 kDa) (Amino Acid Sequence: SHTAPYVLGP DKQQAIIKEL RSSFEKLLND YQQEESGVPE SSQYQMPCFA LNPQLPYNID SSATLPYCRV IKPLFDNKAQ VVALIDHLSK LEFRHEPETK VSVPTDSFKC KSFIVSIFKK FSECLICLNH (130)) (Gene ID: 101334968). For research use only. Made in the USA