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 Concept Videos

Channel Rhodopsins01:11

Channel Rhodopsins

3.5K
Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
3.5K
Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

2.9K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
2.9K
Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

5.6K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
5.6K
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

29.2K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
29.2K
Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

8.8K
The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
Some signaling systems generate...
8.8K

You might also read

Related Articles

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

Sort by
Same author

Sensitized Disequilibration of Water-Soluble Azopolymers.

Angewandte Chemie (International ed. in English)·2025
Same author

Azobenzene-Attached (NHC)Gold(I) and (NHC)Copper(I) Complexes as Photoswitchable Catalysts.

Chemistry (Weinheim an der Bergstrasse, Germany)·2024
Same author

Guest Encapsulation Alters the Thermodynamic Landscape of a Coordination Host.

Journal of the American Chemical Society·2023
Same author

Disequilibrating azobenzenes by visible-light sensitization under confinement.

Science (New York, N.Y.)·2023
Same author

Photocleavable Anionic Glues for Light-Responsive Nanoparticle Aggregates.

Journal of the American Chemical Society·2023
Same author

Encapsulation within a coordination cage modulates the reactivity of redox-active dyes.

Communications chemistry·2023

Related Experiment Video

Updated: Apr 19, 2026

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

12.2K

Watching single molecules move in response to light.

Pintu K Kundu1, Rafal Klajn

  • 1Department of Organic Chemistry, Weizmann Institute of Science , Rehovot 76100, Israel.

ACS Nano
|December 5, 2014
PubMed
Summary

Scientists are developing artificial molecular machines that mimic nature's solar energy use. New research uses force microscopy to observe how individual photoresponsive molecules change shape when exposed to light.

Area of Science:

  • Molecular engineering and nanotechnology
  • Biomimetic materials science

Background:

  • Nature efficiently harnesses solar energy for biological processes.
  • Man-made molecular photoswitches offer potential to surpass natural systems.
  • Developing light-controlled artificial molecular machines requires understanding photoisomerization-coupled conformational changes.

Discussion:

  • Force microscopy reveals individual photoresponsive molecule behavior.
  • Light-induced isomerization triggers molecular conformational changes.
  • Observed events include contraction, extension, and crawling of molecules.

Key Insights:

  • Detailed insights into individual photoresponsive molecule dynamics.
  • Understanding of light-induced isomerization and conformational coupling.

More Related Videos

Observation of Photobehavior in Chlamydomonas reinhardtii
03:54

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

4.8K
Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules
10:20

Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules

Published on: September 5, 2019

9.0K

Related Experiment Videos

Last Updated: Apr 19, 2026

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

12.2K
Observation of Photobehavior in Chlamydomonas reinhardtii
03:54

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

4.8K
Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules
10:20

Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules

Published on: September 5, 2019

9.0K
  • Identification of specific molecular motion events.

    • Outlook:

    • Potential for designing advanced multifunctional materials.
    • Advancing light-controlled molecular machines and nanotechnology.
    • Overcoming challenges in artificial molecular system development.