Central Metabolites
Central Metabolites - Related Videos
01:18
Detection of Human Fecal Metabolites Using a Bacterial Biosensor
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2026
Begin with a bacterial biosensor culture suspended in a medium.These engineered bacteria produce a transcription factor that, upon binding to a specific fecal metabolite, activates a promoter associated with a fluorescent reporter gene.To this culture, add a filtered human fecal sample containing metabolites, such as lactate, that are involved in host-microbiome interactions.Dilute this mixture with a fresh medium to maintain an optimal reaction volume.Incubate without shaking to mimic the...
12:49
Purification of Transcripts and Metabolites from Drosophila Heads
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Cited by 13 •
2013
We describe here the procedures for the extraction and purification of mRNA and metabolites from Drosophila heads. We are applying these techniques to better understand the cellular perturbations underlying neuronal degeneration. These methodologies can be easily scaled and adapted for other "omic" projects.
01:25
The Central Dogma
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2019
Overview The central dogma of biology states that information encoded in the DNA is transferred to messenger RNA (mRNA), which then directs the synthesis of protein. The set of instructions that enable the mRNA nucleotide sequence to be decoded into amino acids is called the genetic code. The universal nature of this genetic code has spurred advances in scientific research, agriculture, and medicine. RNA Is the Missing Link between DNA and Proteins In the early 1900s, scientists discovered...
08:22
Assessing Cytotoxicity of Metabolites of Typical Triazole Pesticides in Plants
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2023
The protocol describes a new method to assess the integral cytotoxicity of metabolites of triazole pesticides in plants.
11:02
Identification and Quantification of Deranged Metabolites in Critically Ill Patients Using NMR-Based Metabolomics
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Cited by 3 •
2024
Nuclear magnetic resonance (NMR) spectroscopy is used to identify dysregulation in the metabolites in patients with various diseases. This technique allows the quantification of the deranged metabolites, unraveling the pathophysiological insights. Here, we describe the step-by-step procedure of the NMR-based approach for the metabolic characterization of the patients.
FAQs
Enzyme activity and cellular conditions determine how quickly metabolites move through interconnected pathways and which downstream processes receive available intermediates. Changes in these controls can shift resource allocation between energy generation, biomass synthesis, and specialized product formation. In bioengineering, identifying these influences helps researchers predict why an engineered pathway may alter growth or change the amount of a desired product.
These compounds connect major metabolic routes rather than serving only one isolated reaction. Their positions allow nutrient breakdown to remain linked with energy production, biomass formation, and synthesis of specialized products. Monitoring their levels or movement can therefore reveal where an engineered system is directing resources and whether pathway changes support the intended cellular output.
Because glycolysis, the tricarboxylic acid cycle, and the pentose phosphate pathway share interconnected metabolic resources, redirecting flux toward a specialized product can change the resources available for biomass or energy production. Conversely, prioritizing growth may reduce product formation. Bioengineering studies examine this balance to determine how pathway design affects cellular growth and overall resource allocation.
Measurements provide evidence about how nutrients are being processed and where metabolic flux is being directed. Comparing metabolite patterns with growth or product formation can expose changes caused by an engineered pathway, including shifts toward energy, biomass, or specialized products. This information supports interpretation of system behavior rather than relying only on the final product amount.
A typical approach begins by measuring relevant metabolites, including compounds associated with glycolysis, the tricarboxylic acid cycle, and the pentose phosphate pathway. Researchers then evaluate how enzyme activity and cellular conditions influence flux, identify a desired redirection, and assess its effects on growth and product formation. The results guide further design of microbial or cell-based systems.
Redirection is useful when a microbial or cell-based system must produce more of a selected fuel, pharmaceutical, biomaterial, or other valuable compound. Researchers use measurements of central metabolites to identify how resources are currently distributed, then modify pathway behavior to favor the target output. They also evaluate whether the change preserves sufficient support for cellular growth.
Their measurement reveals how an engineered strain allocates resources among nutrient breakdown, energy production, biomass synthesis, and specialized products. Researchers can use that information to identify pathway changes that improve the desired output while accounting for growth effects. This makes central-metabolite analysis a practical way to connect molecular pathway design with performance of the whole strain.