The Canine IFN alpha yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Canine IFN alpha applications are for cell culture, ELISA Standard, ELISpot Control, and Western Blot Control. The Canine IFN alpha yeast-derived recombinant protein can be purchased in multiple sizes. Canine IFN alpha Specifications: (Molecular Weight: 19.0 kDa) (Amino Acid Sequence: CHLPDTHGLR NWRVLTLLGQ MRRLSAGSCD HYTNDFAFPK ELFDGQRLQE AQALSVVHVM TQKVFHLFCP DTSSAPWNMT LLEELCSGLS EQLDDLEACP LQEAGLAETP LMHEDSTLRT YFQRISLYLQ DRNHSPCAWE MVRAEIGRSF FSSTILQERI RRRK). For research use only. Made in the USA.