Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Exponential function for calculating saturable enzyme kinetics.

F Keller1, C Emde, A Schwarz

  • 1Freie Universität, Klinikum Steglitz, Berlin, F.R.G.

Clinical Chemistry
|December 1, 1988
PubMed
Summary

This study introduces a more accurate model for enzyme kinetics, moving beyond the standard Michaelis-Menten equation. The enhanced model, incorporating decelerated enzyme kinetics, provides a better approximation of real-world enzymatic reactions.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Large-scale neural slowing measured with electroencephalography indexes secondary thalamic degeneration in stroke.

medRxiv : the preprint server for health sciences·2026
Same author

Zero liquid discharge recovery system for maximized tailings water reuse.

Journal of environmental management·2025
Same author

Reperfusion failure after successful thrombectomy of large vessel occlusion stroke: clinical and imaging evidence.

Frontiers in neurology·2025
Same author

Upper limb movement quality measures: comparing IMUs and optical motion capture in stroke patients performing a drinking task.

Frontiers in digital health·2024
Same author

Characterization of atherosclerotic plaques in blood vessels with low oxygenated blood and blood pressure (Pulmonary trunk): role of growth differentiation factor-15 (GDF-15).

BMC cardiovascular disorders·2021
Same author

Differentiating migraine, cervicogenic headache and asymptomatic individuals based on physical examination findings: a systematic review and meta-analysis.

BMC musculoskeletal disorders·2021

Area of Science:

  • Biochemistry
  • Enzyme kinetics

Background:

  • Michaelis-Menten equation commonly describes enzyme kinetics but assumes steady-state, limiting its accuracy.
  • The hyperbolic nature of Michaelis-Menten is less curvilinear than actual enzyme kinetics.

Purpose of the Study:

  • To develop a more accurate mathematical model for enzyme kinetics.
  • To improve upon the limitations of the Michaelis-Menten equation by incorporating decelerated kinetics.

Main Methods:

  • Compared a saturation-type exponential function with the Michaelis-Menten equation.
  • Introduced a deceleration term (Vdec) to account for non-steady-state conditions.
  • Applied the models to the enzymatic reaction of chymotrypsin on N-acetyltyrosylethylester.

Main Results:

Related Experiment Videos

  • The Michaelis-Menten equation yielded Vmax = 3.74 μmol/min and Km = 833 μmol for chymotrypsin.
  • Decelerated enzyme kinetics provided more accurate values: Vmax = 4.80 μmol/min, Vdec = 0.0118 μmol/min, and Ka = 0.00111/μmol (1/Ka ≈ 901 μmol).

Conclusions:

  • Decelerated enzyme kinetics offers a more precise representation of enzyme behavior than the traditional Michaelis-Menten model.
  • The improved model removes the necessity for steady-state assumptions, enhancing applicability to complex enzymatic reactions.