Human TGFB1 Recombinant Protein (N-His) is a recombinant protein expressed in E. coli, spanning Ala279-Ser390, with an N-terminal His tag. Predicted molecular weight: 15.09 kDa. Purity: >90% as determined by SDS-PAGE. Supplied lyophilized from a solution in PBS pH 7.4, 1 mM EDTA, 4% Trehalose, 1% Mannitol. Applications: ELISA, immunogen, SDS-PAGE and Western blot. Transforming growth factor beta-1 proprotein is a ~44 kDa protein. Transforming growth factor beta-1 proprotein: Precursor of the Latency-associated peptide (LAP) and Transforming growth factor beta-1 (TGF-beta-1) chains, which constitute the regulatory and active subunit of TGF-beta-1, respectively. For research use only.