The Human APRIL 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 APRIL applications are for cell culture, ELISA standard, and Western Blot Control. The Human APRIL yeast-derived recombinant protein can be purchased in multiple sizes. Human APRIL Specifications: (Molecular Weight: 16.4 kDa) (Amino Acid Sequence: AVLTQKQKKQ HSVLHLVPIN ATSKDDSDVT EVMWQPALRR GRGLQAQGYG VRIQDAGVYL LYSQVLFQDV TFTMGQVVSR EGQGRQETLF RCIRSMPSHP DRAYNSCYSA GVFHLHQGDI LSVIIPRARA KLNLSPHGTF LGFVKL (146)) (Gene ID: 8741).