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K Wheaton (19)

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BIOL 2020
K Wheaton

Luminescent jellyfish Enzymes, oxidation of a compound by oxygen in the presence of calcium to release CO2 and light Fastest enzyme? Carbonic anhydrase Describe each class: oxidoreductases, Oxidationreduction, transfer functional transferases, hydrolases, lyases, isomerases, groups, hydrolysis, group elimination to form ligases double bonds, isomerisation, bond formation with ATP Proteolytic enzymes? Catalyze proteolysis, hydrolysis of a peptide b ond Trypsin? Papain? Digestive enzyme that catalyzes the splitting of peptide bonds on carboxyl side of lysine and arginine. From papaya tenderize meat Enzymes depend on small ____. Name of Cofactors. Without=apoenzyme, enzyme with and without a cofactor. And with=holoenzyme divisions Divided into: coenzymes (organic) and metals Coenzymes include vitamins Delta G equation Delta G=deltaGnot +RT ln([P]/[S]) Enzymes accelerate ? Attainment of equilibria, Transition state is and act as? Species with the highest free energy , act as an inhibitor to prevent the reaction from proceeding forward. Free energy released upon binding? Binding energy Describe racemisation of proline Transition state in which the tetrahedral- carbon atom has become trigonal Features of active sites of enzymes (5) 3D cleft or crevice, takes up a small part of total volume, unique microenvironment, substrate bound by multiple weak bonds, specificity of binding depends on the precisely defined arrangement of atoms in an active site 2 models, lock and key and induced fit, Unbound enzyme is complimentary in shape describe to substrate, enzyme changes shape on substrate binding to form complementary shape after substrate is bound. How do enzymes stabilize the transition state? Providing contacts to the substrate Characteristics of enzymes (4) Increase rate of reaction by lowering energy barrier, not used up or permanently changes, does not change pos. Of equilibrium, forms transient complex with reactant (transient means not permanently associated together) Enzymes dependent on (4) Concentration of: S, E, pH, temp (37 degrees C for body) Maximal velocity of reaction with enzyme Rises asymptotically to max as substrate concentrations go up. Amount of product formed is a function of
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