BIOL 112 Study Guide - Amine, Starch, Chemiosmosis
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BIOL 112 Full Course Notes
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Document Summary
Genes encoding proteins for metabolizing sugar maltose(carbon and energy source). Genes: 3 to 4 letter abbreviation) no caps written in italics or underlined. Proteins (gene product) : 3 to 4 letters with caps. Malp, malq, mal t mal p and malq encodes enzymes that break down maltose malt encodes a regulator (regulator protein) of mal pq. When maltose is not present, malt can"t bind to dna at the operator region. Rna pol doesn"t bind frequently and there is little transcription. The promoter for mal pq operons is weak. When maltose is present, maltose bind to mal t and changes its shape. The malt-maltose complex has an increased affinity for the operator and rna pol binds more and leads to transcription of the mal pq operons. As maltose gets used up, the concentration decreases. Due to the binding equilibrium, maltose dissociates from. Mal t, mal t changes shape and cannot binds to the operator.
