Biology

Biology, 23.07.2019 22:00, yangyang7

Are amino acids outside the active site important for optimal function of the enzyme?

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Biology, 05.07.2019 09:40, dbn4everloved8

When there are two or more reactants, the active site provides a template on which the substrates can come together in the proper orientation for a reaction to occur between them 2.as the active site of an enzyme clutches the bound substrates, the enzyme may stretch the substrate molecules toward their transition state form, stressing and bending critical chemical bonds to be broken during the reaction. because ea is proportional to the difficulty of breaking the bonds, distorting the substrate it approach the transition state and reduces the amount of free energy that must be absorbed to achieve that state. 3.the active site may also provide a microenvironment that is more conducive to a particular type of reaction than the solution itself would be without the enzyme. ex: if the active site has amino acids with acidic r-groups, the active site may be a pocket of low ph in an otherwise neutral cell. in such cases, an acidic amino acids may facilitate h+ transfer to the substrate as a key step in catalyzing the reaction. 4. amino acids in the active site directly participate in the chemical reaction. sometimes this process even involves brief covalent bonding between the substrate and the side chain of an amino acid in an enzyme. subsequent steps of the reaction restore the side chains to their original states so that the active site is the same after the reaction was before?

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Biology, 07.07.2019 08:30, kailey96

Suppose that the amino acids that make up an enzyme’s active site are changed. how might this change affect the enzyme?

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Biology, 18.10.2019 01:30, 4tazaouiamine1r

Suppose that the amino acids that make up an enzyme's active site are changed. how might this change the enzyme?

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Biology, 22.10.2019 07:00, VinTAEge

Aminolevulinate dehydratase (alad ) is an enzyme that relies on zinc as a coenzyme. a zinc ion binds to the alad active site, where it forms favorable interactions with the side chains of three amino acids. researchers have found that substituting a lead ion for a zinc ion in the alad active site causes inhibition of alad . which of the following statements best explain how the lead ion causes inhibition of alad ? a. it changes the shape and charge of the substrate so that it becomes more compatible with alad’s active site. b. it changes the amino acid sequence of the alad protein so that the enzyme catalyzes a different reaction. c.it changes the three-dimensional structure of the active site so that alad is no longer compatible with its substrate. d. it changes the enzyme-substrate complex so that the transition state is more stable and the reaction proceeds at a faster rate.

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