Purification of a Recombinant Human PEX1/PEX6 AAA+ ATPase Complex from HEK293TT Cells

The heteromeric complex of the two AAA+ ATPases PEX1 and PEX6 is involved in the export of the monoubiquitinated import receptor PEX5 from the peroxisomal membrane. Mutations in this complex make up for over 60% of the patients with Peroxisomal Biogenesis Disorders. To have better options for the treatment of the milder mutations we purified the human PEX1/PEX6 complex after overexpression of plasmids encoding tagged proteins from HEK293TT cells. We used a combination of a HisTrap Column (Ni-NTA chromatography) and a Strep-Tactin^®XT cartridge for small-scale purification of the complex using the His-tag of PEX1 and the Strep-tagII of PEX6.