| Description | Ac-LEVD-pNA is a chromogenic substrate for caspase-4 and can be used to detect caspase-4 activity[1] | β-Endorphin, human, a prominent endogenous peptide, existing in the hypophysis cerebri and hypothalamus, is an agonist of opioid receptor, with preferred affinity for µ-opioid receptor and δ-opioid receptor; β-Endorphin, human exhibits antinociception activity | Apo-Bovine Transferrin refers to iron free Transferrin (HY-P3267), serves as Transferrin receptor ligand and mediates iron release from endothelial cells. Apo-Transferrin indicates an iron deficient environment, can directly bind to hephaestin, which can convert Fe2+ to Fe3+. Apo-Transferrin Apo-Bovine Transferrin refers to iron free Transferrin (HY-P3267), serves as Transferrin receptor ligand and mediates iron release from endothelial cells. Apo-Transferrin indicates an iron deficient environment, can directly bind to hephaestin, which can convert Fe2+ to Fe3+. Apo-Transferrin mediates iron efflux most likely in cooperation with ferroportin 1[1]... Read More | Aprotinin is a bovine pancreatic trypsin inhibitor (BPTI) inhibitor which inhibits trypsin and chymotrypsin with Kis of 0.06 pM and 9 nM, respectively | Phi29 DNA Polymerase is a mesophilic DNA polymerase cloned from Bacillus subtilis phage Phi29 |