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Cinetica Enzimatica

Andrea Dacar Physical Chemistry finals English

Cinetica Enzimatica

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Cinetica Enzimatica

  1. Enzima

    • catalizador biologico
    • permite progreso de reaccion con una menor barrera de energia
      • en consecuencia la velocidad de reaccion aumenta
    • sitio activo
      • en donde
        • ocurre la reaccion
        • se une el sustrato (los reactivos)
        • se puede unir el inhibidor en inhibicion competitiva
  2. INHIBICION

    • COMPETITIVA
      • sustrato e inhibidor compiten por sitio activo
      • si aumento [S] puedo favorecer la reaccion
      • inhibitors block the substrate from binding to the active site and forming ES complex
      • caracteristicas de grafica
        • Jm doesn´t change
          • same ordenada al origen
        • Km increases
          • it becomes less negative
          • slope increases
    • NO COMPETITIVA
      • Non-Competitive Inhibitors
        • bind to other site other than the active site
        • they do not prevent the substrate from binding to the active site
          • Km remains the same
        • they cannot be overcome by the addition of substrate
        • they lower Jm
          • due to the inability of the reaction to proceed as efficiently
        • caracteristicas de la grafica
          • pendiente aumenta
            • cuando aumenta CI
          • ordenada al origen aumenta
            • Jm decreases
          • Km remains the same
    • INCOMPETITIVA
      • uncompetitive inhibitor binds only to the ES complex
      • Jm decreases
        • due to less availability of the active complex
      • Km decreases
        • due to better binding efficiency
      • caracteristicas de la grafica
        • pendiente aumenta
        • ordenada al origen aumenta
        • Km disminuye
  3. Ecuacion de Michaelis

    • Jo: velocidad inicial
    • Jm: velocidad maxima (que puede alcanzar la reaccion enzimatica sin inhibicion)
    • Km: constante de Michaelis
      • concentracion a la cual la velocidad maxima (Jm) se reduce a la mitad
    • Cs: concentracion sustrato

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  • Cinetica Enzimatica
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  • Cinetica Enzimatica
  • Cinetica Enzimatica

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finals Physical Chemistry Mind Map on Cinetica Enzimatica, created by Andrea Dacar on 30/10/2013.
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