(a) B-galactosidase
(b) Lactose permease
(c) Transacetylase
(d) Lactose permease and transacetylase
[NEET 2013]
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Which enzyme/s will be produced in a cell in which there is a non-sense mutation in the lac Y-gene?
Which enzyme/s will be produced in a cell in which there is a non-sense mutation in the lac Y-gene?
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Correct Option (a) Reason : β-galactosidase is a structural gene, which carry codes for the synthesis of protein. Mutation in the lac Y gene of E. coli needs residues of cytoplasmic
enzyme β-galactosidase. Lactose permease is a membrane protein, which is a major facilitator superfamily. Transacetylase is enzyme transferring acetyl groups from one compound to another.