The two cathepsin B-like proteases of Arabidopsis thaliana are closely related enzymes with discrete endopeptidase and carboxydipeptidase activities.
Porodko A, Cirnski A, Petrov D, Raab T, Paireder M, Mayer B, Maresch D, Nika L, Biniossek ML, Gallois P, et al. Biol Chem. 2018 Sep 25; 399(10):1223-1235.