Human IL-17A&IL-17F Heterodimer Protein, Twin Strep&His Tag (ILF-H52W6) is expressed from human 293 cells (HEK293). It contains AA Gly 24 - Ala 155 (IL-17A) & Arg 31 - Gln 163 (IL-17F) (Accession # Q16552-1 (IL-17A) & Q96PD4-1 (IL-17F)). Two sequential affinity purification steps were used to ensure exact 1:1 molar ratio of IL17A&IL17F heterodimer.