Stability and iron oxidation properties of a novel homopolymeric plant ferritin from adzuki bean seeds: A comparative analysis with recombinant soybean seed H-1 chain ferritin

► A novel homopolymeric plant ferritin is firstly purified from adzuki bean seed. ► The EP of ASF exhibits a much stronger iron oxidative activity than that of rH-1. ► Both ASF and rH-1 variant are much more stable than rH-1. ► The degradation of rH-1 is ascribed to one amino acid residue, Ser68.