Which of the following is not produced by E. | vedclass

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(C) The $lac$ operon in $E. coli$ consists of three structural genes: $lacZ$,$lacY$,and $lacA$.$1$. The $lacZ$ gene codes for $\beta$-galactosidase,wh

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Lactose dehydrogenase

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(C) The $lac$ operon in $E. coli$ consists of three structural genes: $lacZ$,$lacY$,and $lacA$.$1$. The $lacZ$ gene codes for $\beta$-galactosidase,which hydrolyzes lactose into glucose and galactose.$2$. The $lacY$ gene codes for lactose permease,which increases the permeability of the cell to $\beta$-galactosides.$3$. The $lacA$ gene codes for thiogalactoside transacetylase,which transfers an acetyl group from acetyl-CoA to $\beta$-galactosides.Lactose dehydrogenase is not a part of the $lac$ operon and is not produced by this system in $E. coli$.

Which of the following is not produced by $E. coli$ in the lactose operon?

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