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

Photosystem II01:22

Photosystem II

59.9K
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across  two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
59.9K
Photosystem I01:27

Photosystem I

52.8K
Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
52.8K
Photosystems01:32

Photosystems

7.0K
Photosystems are multiprotein complexes that form the functional units of photosynthesis in plants, algae, and cyanobacteria. They are found embedded in the membrane of tiny sac-like structures called thylakoids placed inside the chloroplast.
Functioning of Photosystems
Photosystems contain many pigment molecules, such as chlorophylls and carotenoids, arranged in a particular organization across two domains — the antenna complex and the reaction center. The main aim of the pigment...
7.0K
Oxygenic Photosynthesis01:26

Oxygenic Photosynthesis

994
Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate...
994
ATP Energy Storage and Release01:31

ATP Energy Storage and Release

10.0K
ATP is a highly unstable molecule. Unless quickly used to perform work, ATP spontaneously dissociates into ADP and inorganic phosphate (Pi), and the free energy released during this process is lost as heat. The energy released by ATP hydrolysis is used to perform work inside the cell and depends on a strategy called energy coupling. Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions, allowing them to proceed.
One example of energy coupling using ATP involves a...
10.0K
ATP Energy Storage and Release01:31

ATP Energy Storage and Release

2.8K
2.8K

You might also read

Related Articles

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

Sort by
Same author

Recollections.

Photosynthesis research·2013
Same author

Evidence for the photochemical production of superoxide mediated by saponified chlorophyll.

Biochemical and biophysical research communications·1975
Same author

Multiplicity of electron transport reactions in bacterial photosynthesis.

Biological reviews of the Cambridge Philosophical Society·1970
Same author

Effects of adenosine 3',5'-cyclic monophosphoric acid on certain light-induced reactions and on ATPase activity of isolated chromatophores from Rhodospirillum rubrum.

Biochemical and biophysical research communications·1970
Same author

Comparative decay characteristics of the light generated free radical in chromatophores and chloroplasts.

Photochemistry and photobiology·1969
Same author

A kinetic study of the production of light-induced ESR signals in Rhodospirillum rubrum chromatophores.

Archives of biochemistry and biophysics·1968

Related Experiment Video

Updated: May 5, 2026

Purification of Active Photosystem I-Light Harvesting Complex I from Plant Tissues
07:10

Purification of Active Photosystem I-Light Harvesting Complex I from Plant Tissues

Published on: February 3, 2023

1.5K

Photosynthetic phosphorylation.

A W Frenkel1

  • 1Department of Plant Biology, University of Minnesota, 1445 Gortner Avenue, 55108-1095, St. Paul, MN, USA.

Photosynthesis Research
|December 5, 2013
PubMed
Summary
This summary is machine-generated.

This review details the discovery of photophosphorylation in chloroplasts and bacteria. It highlights key contributions to understanding cyclic and non-cyclic electron transport and ATP synthesis.

More Related Videos

Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting
08:40

Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting

Published on: February 14, 2019

7.2K
A New Approach for the Comparative Analysis of Multiprotein Complexes Based on 15N Metabolic Labeling and Quantitative Mass Spectrometry
08:04

A New Approach for the Comparative Analysis of Multiprotein Complexes Based on 15N Metabolic Labeling and Quantitative Mass Spectrometry

Published on: March 13, 2014

11.5K

Related Experiment Videos

Last Updated: May 5, 2026

Purification of Active Photosystem I-Light Harvesting Complex I from Plant Tissues
07:10

Purification of Active Photosystem I-Light Harvesting Complex I from Plant Tissues

Published on: February 3, 2023

1.5K
Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting
08:40

Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting

Published on: February 14, 2019

7.2K
A New Approach for the Comparative Analysis of Multiprotein Complexes Based on 15N Metabolic Labeling and Quantitative Mass Spectrometry
08:04

A New Approach for the Comparative Analysis of Multiprotein Complexes Based on 15N Metabolic Labeling and Quantitative Mass Spectrometry

Published on: March 13, 2014

11.5K

Area of Science:

  • Biochemistry
  • Photosynthesis Research
  • Molecular Biology

Background:

  • Photophosphorylation, the light-driven synthesis of ATP, is crucial for energy conversion in photosynthesis.
  • Early work by Arnon established key concepts like cyclic and non-cyclic photophosphorylation in chloroplasts.
  • Bacterial chromatophore research has advanced understanding through isolation and structural analysis of reaction centers.

Purpose of the Study:

  • To provide a historical overview of photophosphorylation discovery.
  • To elucidate the mechanisms of electron transport and ATP synthesis in photosynthesis.
  • To discuss recent advancements in understanding these processes.

Main Methods:

  • Historical review of scientific literature.
  • Analysis of electron transport schemes in chloroplasts and bacterial chromatophores.
  • Examination of structural and functional characterization of bacterial reaction centers.

Main Results:

  • Key terminology like 'Cyclic' and 'Non-cyclic photophosphorylation' was introduced.
  • Isolation and structural determination of bacterial reaction centers revealed details of early photosynthetic reactions.
  • Electron transfer schemes strongly support a cyclic nature in light-induced bacterial electron transfer.

Conclusions:

  • Significant progress has been made in understanding photophosphorylation in chloroplasts and bacteria.
  • The cyclic nature of electron transfer is a key feature of bacterial photosynthesis.
  • Recent developments continue to refine our understanding of ATP synthesis across different phosphorylation systems.