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Biologically Active Proteins
LSBio’s biologically active proteins have been tested to confirm that they retain their functional
attributes. Each protein is uniquely tested based upon its particular function, such as measuring
the ability of an enzyme to hydrolyze a substrate, using a cell proliferation assay to test a growth
factor, or a cytotoxicity assay to test proteins that can cause cell death. These proteins are a
cost-effective resource for use in a wide variety of in vitro research applications.
Less than 1.0 EU/µg protein (determined by LAL method).
The recombinant human CD19 consists of 283 amino acids and predictes a molecular mass of 31.6 kDa. In SDS-PAGE under reducing conditions, rhCD19 migrates as an approximately 47 kDa band due to glycosylation.
The 69 amino acid recombinant protein has a predicted molecular mass of approximately 7.8 kD. The DTT-reduced protein migrates at approximately 12 kD and non-reduced protein migrates at approximately 14 kD by SDS-PAGE. The predicted N-terminal amino acid