C Pull-down assays of the interactions between DJA6 and chloroplast SUF components. GST-tagged mature DJA6 was used as the bait, MBP-tagged mature NFS2, SUFE1, SUFB, SUFC, SUFD and MBP were used as the prey. The recombinant proteins were incubated with glutathione-agarose beads, and the bound proteins were eluted and analyzed by staining. 