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A microcomputer program for fitting two-substrate enzyme rate equations.

G F Pinto1, E G Oestreicher

  • 1Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Brasil.

Computers in Biology and Medicine
|January 1, 1988
PubMed
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A new microcomputer program in BASIC fits two-substrate enzyme kinetic mechanisms and inhibition models. This tool aids steady-state enzyme kinetics analysis on CP/M systems using non-linear regression.

Area of Science:

  • Biochemistry
  • Enzyme Kinetics
  • Computational Biology

Background:

  • Enzyme kinetics studies are crucial for understanding biological processes.
  • Analyzing complex enzyme mechanisms, especially two-substrate reactions, requires robust computational tools.
  • Existing software may not cover a comprehensive range of steady-state enzyme kinetic models.

Purpose of the Study:

  • To describe a microcomputer program designed for fitting various two-substrate enzyme kinetic mechanisms.
  • To complement a previously published program for enzyme inhibition models, creating a unified analysis tool.
  • To enable the fitting of common rate equations in steady-state enzyme kinetics.

Main Methods:

  • The program is written in BASIC for microcomputers operating under the CP/M system.

Related Experiment Videos

  • It employs non-linear least-squares regression for parameter estimation.
  • Performance was evaluated using the initial rate equation for a steady-state random bisubstrate mechanism with simulated data.

    • Main Results:

    • The developed program successfully fits different two-substrate enzyme kinetic mechanisms.
    • The combined program effectively handles both enzyme kinetic mechanisms and inhibition models.
    • The non-linear regression approach provides reliable fitting for steady-state enzyme kinetic data.

    Conclusions:

    • This BASIC program offers a valuable computational resource for researchers in enzyme kinetics.
    • It enhances the analysis of complex enzyme systems, including two-substrate reactions and inhibition.
    • The program's accessibility on CP/M microcomputers broadens its potential use in various laboratory settings.