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SSME-518 Instructional Technology and Material Development Assignment2 PowerPoint PPT Presentation


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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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SSME-518 Instructional Technology and Material Development Assignment2

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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


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