The reported specific arginase activity
was 2090 lmol min1 mg1 protein for the enzyme purified from
human liver [25], 200 lmol min1 mg1 protein for the rhARG1 expressed
in E. coli [22], 400 lmol min1 mg1 protein and
15 lmol min1 mg1 protein for the (His)6-tagged human arginase
expressed in B. subtilis [14] or E. coli [24] cells, respectively