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What Metal Ion Cofactors Are Required to Bind Nucleotide Triphosphate

Question 26

Multiple Choice

What metal ion cofactors are required to bind nucleotide triphosphate substrates by E. coli RNA polymerase?

A) Fe²⁺
B) Zn²⁺
C) Mg²⁺
D) Mn²⁺
E) None of these ions is required.

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