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

G Lutze1, W Liese, W Kunz

  • 1Physiol.-chem. Institut der Medizinischen Akademie Madgeburg, DDR

FEBS Letters
|October 5, 1970
PubMed
Summary
This summary is machine-generated.

Damaging mitochondria or their inner membranes releases protons linked to potassium. The outer membrane, however, prevents this effect, suggesting inner membrane sites are key for potassium ion exchange.

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

Efficient aqueous solubilization of methylxanthines <i>via</i> complexation with natural polyphenolate salts.

RSC advances·2026
Same author

Diffusion and precipitation processes in iron-based silica gardens.

Physical chemistry chemical physics : PCCP·2016
Same author

Influence of additives on the structure of surfactant-free microemulsions.

Physical chemistry chemical physics : PCCP·2015
Same author

[Gelatinous bast fibres in the phloem of some gymnosperms].

Planta·2014
Same author

The future European standard to determine odour in ambient air by using field inspection.

Water science and technology : a journal of the International Association on Water Pollution Research·2012
Same author

Hygienic daily questions about the housing problem.

Gesundheits-Ingenieur·2010

Area of Science:

  • Mitochondrial biology
  • Cellular respiration
  • Membrane biophysics

Background:

  • Mitochondria are crucial for cellular energy production.
  • The inner mitochondrial membrane regulates transport and contains the electron transport chain.
  • Potassium ion (K(+)) transport is vital for mitochondrial function and cell homeostasis.

Purpose of the Study:

  • To investigate the role of mitochondrial membranes in K(+)-linked proton release.
  • To determine if K(+) exchange sites exist within the inner mitochondrial membrane and matrix.
  • To understand the barrier properties of the outer and inner mitochondrial membranes regarding K(+) movement.

Main Methods:

  • Disintegration of intact mitochondria.
  • Preparation of digitonin inner membrane + matrix particles.

Related Experiment Videos

  • Assessment of K(+)-linked proton release under altered membrane conditions.

    • Main Results:

    • Disruption of mitochondrial integrity or inner membrane + matrix particles led to increased K(+)-linked proton release.
    • The outer mitochondrial membrane did not exhibit this effect when altered.
    • These findings suggest the presence of K(+) exchange sites within the inner membrane + matrix.

    Conclusions:

    • The inner mitochondrial membrane and matrix contain K(+) exchange sites.
    • Structural integrity of the inner membrane is essential for regulating K(+) movement.
    • The outer layer of the inner mitochondrial membrane acts as a barrier to K(+) transport.