Question: Some DNA ligases use ATP and other use NAD+ as a cofactor in the
enzyme active site. If 2 NAD+ is…



Some DNA ligases use ATP and other use NAD+ as a cofactor in the
enzyme active site. If 2 NAD+ is used as the cofactor in the DNA
ligase mechanism it is used as a (n):

a. redox cofactor

b. energy source

c. good leaving group

d. a phosphate carrier group

e. both b and c

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