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Sensitivity constraints in a chemical/biochemical highly responsive system

L Acerenza1

  • 1Sección Biofisica, Facultad de Ciencias, Universidad de la República, Montevideo, Urugway. aceren@fcien.edu.uy

Bio Systems
|January 1, 1996
PubMed
Summary

This study analyzes sensitivity patterns in reaction schemes using control coefficients (CC). Constraints significantly limit possible CC values, with biochemical systems showing richer patterns than chemical ones.

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Area of Science:

  • Biochemical reaction kinetics
  • Systems biology
  • Chemical engineering

Background:

  • Investigates sensitivity properties of a reaction scheme previously modeled as a chemical diode or neuron.
  • Quantifies sensitivity using control coefficients (CC) for steady-state flux and concentrations.

Purpose of the Study:

  • To study the sensitivity properties of a reaction scheme.
  • To quantify the impact of structural and kinetic constraints on sensitivity patterns.
  • To compare sensitivity patterns in chemical versus biochemical systems.

Main Methods:

  • Analyzed a specific reaction scheme model.
  • Quantified sensitivity using control coefficients (CC).
  • Derived dependent CC as a function of independent CC for chemical and biochemical cases.

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Main Results:

  • Structural and kinetic constraints reduce the possible sensitivity patterns.
  • Under extreme kinetic constraints, one CC can determine 39 others.
  • Biochemical systems exhibit richer sensitivity patterns than chemical systems.

Conclusions:

  • Constraints significantly limit the observable sensitivity patterns in reaction schemes.
  • The analysis strategy is applicable beyond the specific model studied.
  • This analysis is useful for designing chemical/biochemical devices and understanding metabolism evolution.