3.4.21.69 ? x * 55000, recombinant activated enzyme 683313 3.4.21.69 ? x * 56000, recombinant enzyme, SDS-PAGE 753217 3.4.21.69 ? x * 56000, SDS-PAGE 683652 3.4.21.69 ? x * 62000 718418 3.4.21.69 dimer 1 * 21000 + 1 * 35000, SDS-PAGE of reduced enzyme 29602 3.4.21.69 dimer 1 * 41000 + 1 * 21000, bovine protein C, SDS-PAGE of reduced protein, heavy and light chain are connected by a disulfide bond, cleavage of Arg12-Leu13 in the heavy chain releases a small activation peptide, MW 1400 and protein Ca 29601 3.4.21.69 additional information enzyme structure, overview, the enzyme contains the N-terminal Gladomain, residues 1-37, two epidermal growth factor-like regions, residues 46-92 and 93-136, an activation peptide, residues 158-169, and the serine protease domain, residue 170-419 683551 3.4.21.69 additional information in humans 40% of the protein S circulates free and 60% in a reversible complex with C4b binding protein 29599 3.4.21.69 additional information mapping of APC interactions on its overall 3D structure, overview. The N-terminal Gla-domain, residues 1-45, confers protein C its membrane and EPCR binding capacity and contributes to the binding between APC and protein S, three-dimensional Gla domain structure, overview 718418 3.4.21.69 additional information the enzyme contains the N-terminal Gladomain, residues 1-37, two epidermal growth factor-like regions, residues 46-92 and 93-136, an activation peptide, residues 158-169, and the serine protease domain, residue 170-419 683826