The Human IL-13 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 IL-13 applications are for cell culture, ELISA standard, and Western Blot Control. Human IL-13 yeast-derived recombinant protein can be purchased in multiple sizes. Human IL-13 Specifications: (Molecular Weight: 12.3 kDa) (Amino Acid Sequence: GPVPPSTALRELIEELVNITQNQKAPLCNGSMVWSINLTAGMYCAALESLINVSGCSAIEKTQRMLSGFCPHKVSAGQFSSLHVRDTKIEVAQFVKDLLLHLKKLFREGQFN (112)) (Gene ID: 3596). For research use only. Made in the USA