23.4. What Factors Influence Enzyme Activity?, 618
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Halting the Briggs-Rauscher Oscillating Reaction The Briggs-Rauscher reaction is demonstrated in three different ways. Catalase from a liver extract decomposes the hydrogen peroxide in an Briggs-Rauscher reaction, stopping the oscillations.
Catalysis |
Kinetics |
Enzymes |
Proteins / Peptides
HIV-1 Protease: An Enzyme at Work This is "HIV-1 Protease: An Enzyme at Work", from a video tape published by the Journal of Chemical Education - Software as Special Issue 13
Biochemistry : Inhibitor (15 Variations) Which of the following molecules would you expect to be the strongest competitive inhibitor of the enzyme whose substrate is shown?
alcohol dehydrogenase, substrate ethanol CH2CH2OH
Enzymes
Kinetics : Enzyme (7 Variations)
Trypsin assists in digestion by breaking proteins down into smaller peptides. However, this process is not as efficient in the presence of fluorophosphates. Identify the role of each of these components.
A Bioanalytical Chemistry Experiment for Undergraduate Students: Biosensors Based on Metal NanoparticlesJohn Njagi, John Warner, and Silvana Andreescu Describes a laboratory experiment on the development of a biosensor in which students apply electrochemical methods to deposit gold nanoparticles onto electrode surfaces, immobilize an enzyme using glutaraldehyde chemistry, and perform quantitative analysis of phenol using a biosensor with amperometric detection. Njagi, John; Warner, John; Andreescu, Silvana. J. Chem. Educ.2007, 84, 1180.
Bioanalytical Chemistry |
Electrochemistry |
Enzymes |
Oxidation / Reduction |
Phenols
An Enzyme Kinetics Experiment Using Laccase for General Chemistry Yaqi Lin and Patrick M. Lloyd This article describes the use of laccase, an oxidoreductase enzyme, to study the effects of enzyme catalysts on reaction rates. Lin, Yaqi; Lloyd, Patrick M. J. Chem. Educ.2006, 83, 638.
Enzyme Activity as a Function of pHPaul Krause A matched pair of documents providing an introduction to the role of pH in the regulation of enzyme activity. The tutorial document contains all the equations and graphs for students to use to study the role of pH in enzyme kinetics. In the EnzymeExercise twin document all quations are omitted so that students can develop these interactively. The Exercise document is also ideal for display during lecture where the ideas can be developed interactively with the class as a whole.
Enzymes
Catalysis in BiologyTim Wendorff A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Catalysis |
Enzymes
ChemPaths 104 M Feb 28John W. Moore Today in Chem 104:
* Lecture: Catalysis
* Reading:
Kotz, Ch. 15, Sec. 6
Moore, Ch. 13, Sec. 8-10
* Homework #6 due by 11:55 pm F Mar 4
* Biomolecules Tutorial: Enzymes (and Enzymes Quiz)
due at 11:55 pm, W Mar 2.
