Depletion of SlyD contaminant from a Ni-NTA purified protein sample. A protein purified by Ni-NTA chromatography (IMAC prep) was incubated with a non-SlyD specific nanoCLAMP(Resin) and with slyD-A1(Resin), allowed to flow through the resin, and analyzed on Coomassie-stained SDS-PAGE.