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

Protein Complex Assembly02:41

Protein Complex Assembly

16.7K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
16.7K
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.9K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.9K
Formation of Complex Ions03:45

Formation of Complex Ions

25.8K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
25.8K
Co-activators and Co-repressors02:04

Co-activators and Co-repressors

8.4K
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
8.4K
Complex Power01:14

Complex Power

894
Power engineers have introduced the concept of complex power to determine the cumulative effect of parallel loads. This idea plays a crucial role in power analysis because it encompasses all the details related to the power consumed by a specific load.
Complex power is defined as the multiplication of the voltage and the complex conjugate of the current. The magnitude of this power, known as apparent power, is measured in volt-amperes (VA). Notably, the angle of the complex power equates to the...
894
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

813
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
813

You might also read

Related Articles

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

Sort by
Same author

Synthesis and Characterization of a Series of (PP<sup>R</sup>P)Co Complexes and Comparison of their Electronic Properties and Catalytic Activities.

Organometallics·2026
Same author

Synthesis, Characterization, and Evaluation of the Cobalt-Carbon Bond Strength of (PNNP)Co<sup>III</sup>-R Complexes.

Organometallics·2026
Same author

Role of the Character of the Excited State of Singly Reduced Rh<sub>2</sub>(II,II) Intermediates on Photocatalytic Activity.

Journal of the American Chemical Society·2026
Same author

Synthesis and Characterization of a Copper Complex Supported by a Z‑type Sb<sup>V</sup> Ligand: XPS and DFT Study of Electronic Structure.

Organometallics·2026
Same author

Rhodium-Catalyzed Arene Alkenylation Using Benzoquinone Derivatives as Oxidants.

Organometallics·2026
Same author

Redox- and Protonation-Tunable Diboraheptacenes.

Journal of the American Chemical Society·2026

Related Experiment Video

Updated: Jan 23, 2026

Probing for Mitochondrial Complex Activity in Human Embryonic Stem Cells
12:42

Probing for Mitochondrial Complex Activity in Human Embryonic Stem Cells

Published on: June 17, 2008

14.7K

O2 Activation by a Heterobimetallic Zr/Co Complex.

Hongtu Zhang1, Gillian P Hatzis1, Curtis E Moore1

  • 1Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States.

Journal of the American Chemical Society
|June 12, 2019
PubMed
Summary

This study details a novel two-electron oxygen reduction using a zirconium-cobalt complex. This breakthrough advances renewable fuel cell technology and aerobic oxidation reactions.

More Related Videos

Measurement of In Vitro Integration Activity of HIV-1 Preintegration Complexes
10:34

Measurement of In Vitro Integration Activity of HIV-1 Preintegration Complexes

Published on: February 22, 2017

8.0K
Complementation of Splicing Activity by a Galectin-3 - U1 snRNP Complex on Beads
08:48

Complementation of Splicing Activity by a Galectin-3 - U1 snRNP Complex on Beads

Published on: December 9, 2020

2.5K

Related Experiment Videos

Last Updated: Jan 23, 2026

Probing for Mitochondrial Complex Activity in Human Embryonic Stem Cells
12:42

Probing for Mitochondrial Complex Activity in Human Embryonic Stem Cells

Published on: June 17, 2008

14.7K
Measurement of In Vitro Integration Activity of HIV-1 Preintegration Complexes
10:34

Measurement of In Vitro Integration Activity of HIV-1 Preintegration Complexes

Published on: February 22, 2017

8.0K
Complementation of Splicing Activity by a Galectin-3 - U1 snRNP Complex on Beads
08:48

Complementation of Splicing Activity by a Galectin-3 - U1 snRNP Complex on Beads

Published on: December 9, 2020

2.5K

Area of Science:

  • Inorganic Chemistry
  • Catalysis
  • Renewable Energy

Background:

  • Oxygen reduction is crucial for renewable fuel cells and aerobic oxidation.
  • Developing efficient catalysts for oxygen reduction is a significant challenge.

Purpose of the Study:

  • To report a novel two-electron oxygen reduction reaction.
  • To investigate the cooperative role of a heterobimetallic complex in redox processes.

Main Methods:

  • Synthesis of a heterobimetallic Zr/Co complex.
  • Reaction of the complex with O2 and O atom transfer reagents.
  • Characterization of oxygenated species.

Main Results:

  • The d0 ZrIV center with an appended Co-I site facilitates rapid two-electron O2 reduction.
  • Reactive oxygenated species, including peroxo and oxo complexes, were generated.
  • The bimetallic complex demonstrated cooperative activity in multielectron redox processes.

Conclusions:

  • The Zr/Co complex offers a new synthetic pathway for oxygen reduction.
  • This system highlights a cooperative mechanism where each metal plays a distinct role.
  • The findings contribute to the development of advanced catalysts for energy applications.