Table 3 Effects of metal ions on the NJSZ-13 protease activity

LiCl

83.2 ± 2.1

81.7 ± 3.2

56.3 ± 4.7

KCl

90.6 ± 1.3

80.7 ± 1.2

68.8 ± 2.3

NaCl

110.6 ± 2.6

89.3 ± 5.6

72.7 ± 2.7

MgCl₂

85.3 ± 1.4

69.2 ± 4.3

23.8 ± 2.8

CaCl₂

102.4 ± 2.8

164.2 ± 4.5

87.7 ± 2.0

MnSO₄

86.3 ± 2.5

74.7 ± 3.4

61.8 ± 0.4

ZnSO₄

103.6 ± 3.6

122.7 ± 4.2

56.7 ± 0.9

BaCl₂

81.9 ± 6.9

72.1 ± 2.6

36.9 ± 2.4

Without metal ions