BIOL 3305 Lecture Notes - Lecture 8: Lac Operon, Dna Binding Site, Tata Box
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(cid:131) can use something as a substitute instead of lactose, to make it easier to measure. (cid:120) Hard to investigate when things go up and down. Inducer binds to repressor, repressor going to be inactive, and its no longer bound to the operator. (cid:120) can now have synthesis. (cid:131) activation kicks in, high camp, no glucose. Going to produce even more lacz. (cid:120) glucose is the currency of the cell: another system that is a positive regulatory system. (cid:131) Involves camp, and involves the protein called cap, which binds camp. (cid:131) that"s going to give us positive regulation. (cid:131) camp is inversely correlated wit glucose. Rna polymerase to start transcription transcribe introns, exons, 5" utr and 3" utr), regulatory sequence, 5" and promoter proximal. 5" point of first nucleotide is +1, to the left is upstream and to the right is downstream. Some are the same, but some are different.