The Equine IL-4 yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Equine IL-4 applications are for cell culture, ELISA standard, and Western Blot Control. The Equine IL-4 yeast-derived recombinant protein can be purchased in multiple sizes. Equine IL-4 Specifications: (Molecular Weight: 12.8 kda) (Amino Acid Sequence: GCKYDITLQE IIKTLNNLTD GKGKNSCMEL TVADAFAGPK NTDGKEICRA AKVLQQLYKR HDRSLIKECL SGLDRNLKGM ANGTCCTVNE AKKSTLKDFL ERLKTIMKEK YSKC (114)) (Gene ID: 100034225). For research use only. Made in the USA