The Human EGF 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 EGF applications are for cell culture, ELISA standard, and Western Blot Control. Human EGF yeast-derived recombinant protein can be purchased in multiple sizes. Human EGF Specifications: (Molecular Weight: 6.2 kDa) (Amino Acid Sequence: NSDSECPLSH DGYCLHDGVC MYIEALDKYA CNCVVGYIGE RCQYRDLKWW ELR (53)) (Gene ID: 1950). For research use only. Made in the USA