Which of the following enzymes do not use Mg2+ ions as cofactors?

Which of the following enzymes do not use Mg2+ ions as cofactors? Correct Answer Glutathione peroxidase

Cofactors are additional non protein chemical components required for optimum activity of the enzyme. The enzymes which use Mg2+ ions as cofactors are hexokinase, pyruvate kinase, and Glucose-6-phosphatase. For glutathione peroxidase enzyme, Se+ is used as the cofactor.
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নিম্নের তড়িৎকোষটির তড়িৎচালক বলের মান কত? Mg(s)|Mg2+(aq)||Ag+(aq)|Ag(s) এক্ষেত্রে [Mg2+]=0.13 M এবং [Ag+]=1.0×10-4 M, 298 K তাপমাত্রায় E°Ag+|Ag=+0.80 V এবং E°Mg+|Mg=-2.37 V 
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