University:
Swansea University
Course:
PM134 | Microbiology
Academic year:

2023
Views:

167

Pages:

2
Author:

Amal J.

structuralpromoter operatorABCRegulators geneDDNAhorssiphinprotain protein prinisBCprints,Regulatory elementsIt includes the following regions:a)PROMOTER REGION - It codes the Lac-P gene- It lies b/w theregulation and the Operator RNA polymerase binds to this Sitea promoter region initiates transcription ) H is 100 bp long. Thispromote and control the transcription of the Structural genes 01m-RNA The regulatory genes of the repressor regulate the funof the promoter region.b)OPERATOR REGION :- It code the Lac -O gene It us b/w apromoter and the structural genes ( Lac - z) It containe an operatoSwitch , which decides whether transcription should take placenot The regulatory gene binds to the operator. C.REGULATORY REGION - It codes for the regulator gene (LAC-1)that controls the activity of the promoter and an operator gan.This regulatory gene produces regulatory proteine known as"repressor proteins' that can bind to the promoter and operator.Promoterstructural elementsRegulatorymentionDerristsThese are the regions of DNA, which containDegularlygenes for protein synthesis and they are of three KindsaLac- - N -Encodes for the enzyme beta-galactosidaseFunction -Beta galactosidase brings about the hydrolysis of laitoseinto galaitose and glucose submitsbLac y -Encodes for the enzyme laitose PermeaseFunction - -Lautose Permeare bringe Lactose into the cell.ofLac- A - Encodes for the enzyme thiogalactoside transacelylavefunction- the function It function is not very clearbut it assists the enzyme bota-galactordareLac-zStructuralelementsLac-yLac-A