Enzymes Continued Lecture 3 Fall 2007 Experimental Determination of Rate Parameters • Non-linear equation – goal is to linearize it • Double Reciprocal or Line-Weaver…

Slide 1Allosteric regulation of enzyme activity Allostery: Key Point Binding of a ligand at a site different from the active site modulates the activity. This behavior extends…

Slide 1ENZYMES SBI4U0 Slide 2 ENZYMES An enzyme is a biological catalyst –Biological = protein –Catalyst = speeds up a reaction without being consumed or permanently…

Slide 1 Review Enzymes are specific to a substrate Based on shape (lock & key) Enzymes are NOT consumed or changed by catalyzed reaction Great for speeding up reactions!…

Slide 1How are enzymes regulated? By controlling their concentration –Control of synthesis (activation or repression) –Degradation By controlling the availability of…

Slide 1CELL METABOLISM Enzymes Definition Catalysts Proteins that speed up chemical reactions by lowering the energy of activation. Slide 2 LOWERING THE ENERGY OF ACTIVATION…

Slide 1 Enzymes Protein molecules that act as catalysts Slide 2 Catalysts  Speed up the rate of reactions  Are not permanently changed or used up  Reactants: what…

Slide 1 Slide 2 Regulation of Enzyme Activity Enzyme activity must be regulated so that the proper levels of products are produced at all times and places This control occurs…

Cellular Respiration Lesson 2 Substrate Level Phosphorylation Both glycolysis and the citric acid cycle Can generate ATP by substrate-level phosphorylation Energy Payoff…

Extracellular Enzymes Lab Biochemistry All organisms convert small organic compounds, such as glucose, into monomers required for the production of macromolecules; e.g.,…