For each of the E. coli strains below, indicate whether
β-galactosidase and permease expression are inducible,
constitutive,...
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Biology
For each of the E. coli strains below, indicate whetherβ-galactosidase and permease expression are inducible,constitutive, or not expressed. Assume that no glucose is availableto the cells. β-galactosidase Permease I+ P— O+ Z+ Y— I+ P+ Oc Z+Y— I+ P+ OC Z+ Y— /I—P+ O+ Z— Y+ IS P+ OC Z— Y+ /I+P+ O+ Z+ Y—
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Answer The lactose operon lac operon is an operon required for the transport and metabolism of lactose in Ecoli The lac operon consists of 3 structural genes and a promoter a terminator regulator and an operator The three structural genes are lacZ lacY and lacA lacZ encodes galactosidase LacZ an intracellular enzyme that cleaves the the disaccharide lactose into glucose and galactose lacY encodes Betagalactoside permease LacY which increases the permeability of the cell to galactosides lacA encodes
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