The Bee Apidaecin 1A 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 Apidaecin 1A applications are for cell culture, ELISA standard, and Western Blot Control. Bee Apidaecin 1A yeast-derived recombinant protein can be purchased in multiple sizes. Bee Apidaecin 1A Specifications: (Molecular Weight: 2.0 kDa) (Amino Acid Sequence: GNNRPVYIPQ PRPPHPR (17)) (Gene ID: 406140). For research use only. Made in the USA