Answer:
Dimer of two peptide chains with 1 mole of molybdenum metal each.
Explanation:
Percentage of molybdenum in protein = 0.08%
Molecular mass of nitrate reductase = 240,000 g
Mass of molybdenum = x
[tex]0.08\%=\frac{x}{240,000 g}\times 100=192 g[/tex]
Moles of molybdenum =[tex]\frac{192 g}{95.95 g/mol}=2.00 mol[/tex]
Each peptide chain of nitrate reductase contain 1 mole of molybdenum.
This means that nitrate reductase is composed of to two peptide chains. And in each peptide there is a single mole of molybdenum metal.
