1.2.1.80 in Escherichia coli expressed AtFAR6 and mAtFAR6 purified by a HisTrap HP column BioLogic LP liquid chromatography system 1.2.1.80 Ni affinity column chromatography 1.2.1.80 Ni-NTA resin column chromatography and Superdex 200 gel filtration 1.2.1.80 to homogeneity as a maltose-binding protein-fusion protein by amylose-resin based affinity chromatography