BIOLOGY 2EE3 Lecture Notes - Lecture 8: Lac Operon, Lactose Intolerance, Glycosidic Bond
4 Dec 2017
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Document Summary
Makes sense for organisms to only express a gene hen its product is required. This avoids wasting energy and resources and in some cases avoids cellular. How might you control how much of a particular protein is synthesized? damage resulting from inappropriate expression. As a result of binding of effector molecule (inhibition or activation, known as allosteric regulation) Substrate no longer binds or it binds more strongly: covalent modification may also alter enzyme conformations, altering activity. Disaccharide of galactose and glucose joined by a beta-1, 4 glycosidic linkage. Individuals consuming dairy products may experience lactose intolerance. Control of enzyme production for lactose metabolism regulated at. Promoter site on the dna bound by the rna polymerase; directs initiation. Activator: protein that binds to a site on the dna assists binding of the rna polymerase to promoter, resulting in increased transcription initiation. Activator binding site: site on the dna bound by activator.
