The Bee Melittin yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Bee Melittin applications are for cell culture, ELISA standard, and Western Blot Control. Bee Melittin yeast-derived recombinant protein can be purchased in multiple sizes. Bee Melittin Specifications: (Molecular Weight: 2.8 kDa) (Amino Acid Sequence: GIGAVLKVLT TGLPALISWI KRKRQQ (26)) (Gene ID: 406130). For research use only. Made in the USA