Related Experiment Video
Updated: Feb 8, 2026

05:51
Direct Detection of the Acetate-forming Activity of the Enzyme Acetate Kinase
Published on: December 19, 2011
23.7K
Author Correction: Convergent evolution of a modified, acetate-driven TCA cycle in bacteria
Waldan K Kwong1, Hao Zheng, Nancy A Moran2
1Department of Integrative Biology, University of Texas at Austin, Austin, Texas, 78712, USA. wk.kwong@aya.yale.edu.
Nature Microbiology
|June 29, 2018
Summary
This study clarifies the widespread occurrence of a specific tricarboxylic acid (TCA) variant in diverse bacterial species, particularly those associated with animals. The authors acknowledge omitting prior research but confirm their findings remain valid.
Area of Science:
- Microbiology
- Bacterial Metabolism
- Genomics
Context:
- A specific tricarboxylic acid (TCA) variant has been identified in various bacterial species, including anaerobic Deltaproteobacteria.
- Previous research has indicated the presence of this TCA variant in certain bacterial groups.
Purpose:
- To investigate the broader distribution of a specific tricarboxylic acid (TCA) variant across different bacterial species.
- To demonstrate the presence of this TCA variant in additional, distantly related organisms using genetic methods.
Summary:
- The study confirms that a particular tricarboxylic acid (TCA) variant is more widespread than previously understood, with a notable prevalence in animal-associated bacteria.
- Genetic approaches were employed to show the existence of this alternative metabolic cycle in a wider range of organisms.
- The authors acknowledge the omission of relevant prior studies (refs 9-13) but affirm that their core findings are unaffected.
Impact:
- Highlights the broader ecological and evolutionary significance of this TCA variant in bacterial communities.
- Provides a foundation for further research into the functional roles and distribution of this metabolic pathway in diverse environments.
- Emphasizes the importance of comprehensive literature review in scientific communication.
Related Concept Videos
Convergent Evolution
33.0K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
33.0K
Milgram's Obedience to Authority
7.4K
Obedience to authority is classically demonstrated in a more famous series of social psychology experiments performed by Stanley Milgram. He was a social psychology professor at Yale who was influenced by the trial of Adolf Eichmann, a Nazi war criminal. Eichmann’s defense for the atrocities he committed was that he was “just following orders.”
7.4K
The Evidence for Evolution
48.3K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
48.3K
The Nitrogen Cycle
60.4K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
60.4K
Distance Corrections
297
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
297
Genome Size and the Evolution of New Genes
9.2K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.2K

