Arylamine N-acetyl Transferase (NAT) in the blue secretion of Telescopium telescopium: xenobiotic metabolizing enzyme as a biomarker for detection of environmental pollution

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Table 1 Effect of divalent cations on NAT like enzyme activity (n = 3) of the bioactive (30S) fraction of the mollusk secretion (200 μg protein equivalent)

Divalent ions	Concentration	% retention of activity*	p Value^**
Cu⁺²	1 mM	0	< 0.001
	5 mM	0	< 0.001
Mg⁺²	1 mM	12.03 ± 0.97	< 0.001
	5 mM	7.11 ± 0.60	< 0.001
Mn⁺²	1 mM	10.07 ± 0.98	< 0.001
	5 mM	6.97 ± 0.74	< 0.001
Ca⁺²	1 mM	34.01 ± 2.07	< 0.001
	5 mM	0.00	< 0.001
Zn⁺²	1 mM	0.00	< 0.001
	5 mM	0.00	< 0.001

^*Data are presented as the mean ± standard deviation (n = 3); ^**Statistical analysis was performed by comparing with control group.