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Enzymatic Cascade Reactions for the Synthesis of Chiral Amino Alcohols from L-lysine
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Can enzyme proximity accelerate cascade reactions?

Andrij Kuzmak1, Sheiliza Carmali2,3, Eric von Lieres4

  • 1Department for Theoretical Physics, I. Franko National University of Lviv, Lviv, Ukraine.

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This summary is machine-generated.

Enzyme proximity channeling can accelerate reaction rates, but its effectiveness depends on reaction conditions and enzyme concentrations. Cellular crowding in vivo can significantly boost these channeled cascade reaction rates.

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Area of Science:

  • Biochemistry
  • Chemical Kinetics
  • Enzyme Engineering

Background:

  • Interest in enzyme proximity channeling has grown to accelerate reaction rates.
  • The glucose oxidase-horseradish peroxidase (GOx-HRP) cascade is a popular model system.
  • Previous studies showed mixed results on proximity channeling's effect, especially with competing enzymes.

Purpose of the Study:

  • To quantitatively rationalize experimental results on enzyme proximity channeling.
  • To investigate the impact of competing enzymes on cascade reaction velocity.
  • To explore the influence of crowding conditions on enzyme cascade efficiency.

Main Methods:

  • Quantitative analysis of experimental data.
  • Mathematical modeling of enzyme kinetics.
  • In silico simulations of enzyme proximity effects.

Main Results:

  • Proximity channeling can enhance reaction velocity in the presence of competing enzymes.
  • Significant enhancement is observed in steady-state for diffusion-limited reactions or high competitor concentrations.
  • Crowding conditions in vivo can markedly enhance overall rates of channeled cascade reactions.

Conclusions:

  • Proximity channeling's effectiveness is condition-dependent, particularly concerning competing enzymes and reaction kinetics.
  • Mathematical models can predict the quantitative impact of channeling.
  • In vivo crowding offers a promising strategy to boost enzyme cascade performance.