The Bovine IL-21 yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Bovine IL-21 applications are for cell culture, ELISA standard, and Western Blot Control. The Bovine IL-21 yeast-derived recombinant protein can be purchased in multiple sizes. Bovine IL-21 Specifications: (Molecular Weight: 15.1 kDa) (Amino Acid Sequence: HKSSSQGQDR LFIRLRQLID IVDQLKNYVN DLDPEFLPAP EDVKRHCERS AFSCFQKVQL KSANNGDNEK IINILTKQLK RKLPATNTGR RQKHEVTCPS CDSYEKKPPK EYLERLKSLI QKMIHQHLS (129)) (Gene ID: 378475).