Which of the following statements is correct | vedclass

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Question

(A) The repressor protein of the $lac$-operon is synthesized by the regulator gene ($i$-gene). It functions as a tetramer,meaning it consists of four

Vedclass · Accepted Answer

It is a tetrameric protein.

Vedclass · Answer

(A) The repressor protein of the $lac$-operon is synthesized by the regulator gene ($i$-gene). It functions as a tetramer,meaning it consists of four identical subunits. Each subunit has a molecular weight of approximately $38,000$ Daltons,making the total molecular weight of the tetramer significantly higher than $16,000$. The repressor protein contains two distinct binding sites: one for the operator region and one for the inducer (allolactose). Therefore,the statement that it is a tetrameric protein is correct.

Which of the following statements is correct regarding the repressor of the $lac$-operon?

Similar Questions

At which level is gene expression regulated in the $lac$ operon of $E. coli$?

$A$: Operator gene is functional when it is not blocked by repressor.
$R$: Regulator gene produces active protein only which acts on operon system in $E. coli$.

Structural gene is monocistronic $- P$
Structural gene is polycistronic $- Q$
Select the correct option for $P$ and $Q$.
$\quad\quad\quad P \quad\quad Q$

Identify the $INCORRECT$ statement with reference to the regulation of gene expression.

Which of the following is not a structural gene of the $Lac$ operon?

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