Recombinant Protein;500UG;Human Coagulation factor XI, His Tag (FXI-H52H5) is expressed from human 293 cells (HEK293). It contains AA Glu 19 - Val 625 (Accession # P03951-1).;This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 69.9 kDa.