PPT-ENZYME-CATALYZED REACTIONS

Case of Polyphenoloxidase INTRODUCTION Browning Fruits and vegetables Enzymatic Nonenzymatic Oxidation of phenolic compounds Sensory properties Color Flavor Bad Good INTRODUCTION PPO. . H—. O. H. C. C. +. O. H. C. C. H. Acid-Catalyzed Hydration of Alkenes. reaction is acid catalyzed; typical hydration medium is 50% H. 2. SO. 4. -50% H. 2. O. Follows Markovnikov's Rule. H. ydrohalogenation. Lecturer Dr. . Kamal. E. M. . Elkahlout. Assistant Prof. of . Biotechnology. 1. CHAPTER 1. Fundamentals of Enzymes. 2. Fundamentals of enzymes. Why enzymes?. Enzyme nomenclature. Enzyme . units. Sources of . Objectives. To monitor the progress of an enzyme catalyzed reaction (Acid phosphatase).. To determine the initial rate of the reaction (. V. i. ).. Important terms and points:. Enzyme kinetics. The central approach for studying the mechanism of an enzyme-catalyzed reaction is to study enzyme kinetics. . of . olefin. Baihua. YE. 06/06/2011. Summary. 1. Introduction. 2. . Rhodium-. catalyzed. . i. ntermolecular. . hydroamination. 2.1. Rh-. catalyzed. . hydroamination. of . ethylene. 2.2. . Rh-. catalyzed. Some reactions have enzymes. What might be an advantage to having enzymes in chemical reactions? Any disadvantages?. Can you name any enzymes?. Bellringer-3/9/15. Enzymes. Most enzymes are proteins. Act as a catalyst to speed up a chemical reaction by helping molecules react with each other faster. Part 1. . Chapter 3. Learning outcomes. You should be able to:. explain how enzymes work. describe and explain the factors that affect. enzyme activity. use V. max. and K. m. to compare the affinity of different enzymes for their substrates. Sisters Enzyme . Video (5:47):. https://. www.youtube.com/watch?v=qgVFkRn8f10. Ricochet Science How Enzymes Work (. 1:20). https://. www.youtube.com/watch?v=UVeoXYJlBtI. AP Biology Catalase Lab Walkthrough (6:45). 1 In this exercise we will look at the catalytic behavior of enzymes. You will use Excel to answer the questions in the exercise section. At the end of this session, you must hand in answers to all Theories of Enzyme Evolution. Overview. (1) . Divergent. . retrograde. evolution, recruiting . adjacent enzymes in pathway. and constrained by . binding similar molecules . as substrates or products.. Transition Metal . Catalyzed . Amide . B. ond . F. ormation. - May, 11. th. 2016 -. Table of contents. Introduction. Generalities about amides. Metal Catalyzed C-N . bond formation. Ru-catalyzed conversion of alcohol and aldehydes into amides. .. The length of the transcription bubble is about 12 to 14 . bp. , but the length of the RNA–DNA hybrid within the bubble is only 8 to 9 . bp. . As the enzyme moves along the template, the DNA duplex reforms. Alkenes and . Alkynes. 2016-06-22. Reporter: . Pengfei Yuan. Supervisor: Prof. Yong . Huang. 2. 1. Introduction. 2. Study . of . copper(I. ) . Hydride complexes. , h. ydroxylamine. esters . Darien . Yeung. 1. Relevance > Examples of Cu Cross Coupling > Mechanism. Roadmap. 1) Cross-Coupling Relevance since establishment of technique. 2) Examples of Cu Catalyzed Cross Coupling . Drill:. . What background knowledge do you have on enzymes?. Enzyme Structure and Function. Enzymes are . protein catalysts. They speed up the rate at which reactions occur. Lower the activation energy by creating a microenvironment that is energetically more favorable for a reaction.