Regulation Of Lac Operon Animation - This video lecture explains about the regulation of lactose operon in animation format. Lac operon is explained in this animation video. Bacterial adapt to changes in their surroundings by using regulatory proteins to train groups of genes on and off in response to various environmental signals François Jacques are and Jack will now receive the Nobel Prize further experiments which increased our basic understanding of how the lactose metabolising genes are regulated in E. coli there are three structural protein coding genes involved in lactose metabolism in E. coli history -like genes are organised into the lack of and Ron is a cluster of genes along with an adjacent promoter and operator that control the transcription of those genes when the structural genes and in our piranha transcribed a single mRNA is produced mRNA is said to be partly systematic because it carries the information from more than one type of protein is a plus encoded by galactosidase which breaks down lactose into glucose and galactose plus encoded writers protease which transport lactose into the cell pass in current strands a sunrise function is not fully understood operator lack of class is a short region of DNA that lies partially within the promoter and relax with the regulatory proteins that controls the transcription of the operon the regulatory gene lack I pass produces an mRNA from which is synthesised repressor proteins that bind to the operator of the Mac operon the general term for the product of a regulatory gene is regulatory proteins regulatory proteins called a repressor because it keeps RNA polymerase from transcribing the structural genes in the absence of lactose -like repressor binds to the operator and RNA polymerase from transcribing the Mac genes when matters is present Manson are converted to an isomer called Alan lactose which acts as an inducement to turn on the lack of genes genes are expressed because Allah lactose binds to the lack repressor protein changing its shape so they cannot bind to the lack operator RNA polymerase can then bind to the promoter and transcribe the lack genes which are carbon nano produced mutations in the lack operon to show how they may affect the regulation of gene expression produced a mutation in the lack I gene lack minus such that in active repressor proteins are synthesised these proteins cannot bind to the operator result is that the structural genes are expressed constitutively that is in the presence or absence of lactose mutations in the operator can't constitute a lack OC DNA-based power to race and is in the operator region make this sequence and recognisable to the repressor protein. Repressor cannot bind the structural genes are always expressed in the absence or presence of lactose and a mutation in the lack I gene called black eye as super repressor showed no synthesis of the lack enzymes and the presence or absence of lactose this may repressor protein binds to the operator is unable to recognise Allah lactose therefore the lack repressor binds to the operator even in the presence of our lactose and transcription does not occur, Brian is one example of how bacteria can turn on or turn of genes in response to environmental conditions the presence of lactose induces the synthesis of enzymes necessary to convert lactose into glucose mutations in this operon demonstrate how the different regions of control.
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Regulation of lac operon
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