Question

Which enzyme's will be produced in a cell in which there is a nonsense mutation in the lac Y gene ?

Answer 1

β -galactosidase:

1. β -galactosidase is a structural gene present in segment of DNA, which carry codes for the synthesis of protein.
2. Mutation in the lac Y gene of E.coli needs residues of cytoplasmic enzyme β -galactosidase.
3. Lactose permease is a membrane protein, which is a major facilitator superfamily.
4. Transacetylase is an enzyme transferring acetyl groups from one compound to another.

Final answer:- Beta-galactosidase enzymes will be produced in a cell in which there is a nonsense mutation in the lac y gene . This enzyme is encoded by the gene lac Z.