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ENZYMES. SSME-518 Instructional Technology and Material Development Assignment2 Presented by: Harika Özge Kızılsu. Outline. Introduction to enzymes How enzyme work Activation energy Factors effecting enzyme activity Temperature pH Enzyme concentration
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ENZYMES SSME-518Instructional Technology and Material Development Assignment2 Presented by: Harika Özge Kızılsu H.Özge Kızılsu
Outline • Introduction to enzymes • How enzyme work • Activation energy • Factors effecting enzyme activity • Temperature • pH • Enzyme concentration • Substrate concentration H.Özge Kızılsu
Introduction to enzymes • Enzymes are usually proteins • Enzymes are catalysts • In general, names end with suffix “ase” H.Özge Kızılsu
Introduction to enzymes 3 x 1012 years is 500 times the age of the earth!!!! H.Özge Kızılsu
Introduction to enzymes Enzymes: • increase the rate of a reaction • not consumed by the reaction • act repeatedly to increase the rate of reactions • are often very “specific” for the substrate Reactants also called “substrates” of enzyme H.Özge Kızılsu
How enzyme work • Enzymes physically interact with their substrates • Substrates bind to the enzyme’s active site • Enzyme reaction path: H.Özge Kızılsu
How enzyme work Substrate fits into an active site perfectly. (key) (lock) • Lock and Key Model click to see animation of model H.Özge Kızılsu
How enzyme work • Activation energy is: the energy required to start a reaction. H.Özge Kızılsu
Factors effecting enzyme activity • Temperature • pH • Enzyme concentration • Substrate concentration H.Özge Kızılsu
C (optimum temperature) Temperature H.Özge Kızılsu
pH H.Özge Kızılsu
Substrate concentration constant Enzyme concentration H.Özge Kızılsu
Substrate concentration click to learn more Enzyme concentration constant H.Özge Kızılsu
Thank YOU H.Özge Kızılsu
References • http://fig.cox.miami.edu/~cmallery/255/255enz/enzymology.htm • http://ntri.tamuk.edu/cell/enzyme2.html • http://www.animationfactory.com/animations/buildings/doors/6038e/ H.Özge Kızılsu