Enolase
Enolase - Related Videos
09:27
Generation of Fluorescent Protein Fusions in Candida Species
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Cited by 6 •
2017
PCR-mediated gene modification can be used to generate fluorescent protein fusions in Candida species, which facilitates visualization and quantitation of yeast cells and proteins. Herein, we present a strategy for constructing a fluorescent protein fusion (Eno1-FP) in Candida parapsilosis.
01:28
Energy-releasing Steps of Glycolysis
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2019
Glycolysis is divided into two phases based on whether energy is utilized or released. While the first phase consumes ATP, the second phase produces energy in the form of ATP and NADH. The energy is released over a sequence of reactions that turns G3P into pyruvate. The energy-releasing phase—steps 6-10 of glycolysis—occurs twice, once for each of the two 3-carbon sugars produced during steps 1-5 of the first phase. The first energy-releasing step—the 6th step of glycolysis —consists of two...
FAQs
Magnesium ions are essential to enolase catalysis because they stabilize the charged intermediates formed during the reaction. This stabilization allows the enzyme to remove water from 2-phosphoglycerate in a controlled conversion to phosphoenolpyruvate. Without accounting for this metal-dependent role, measurements or interpretations of enolase activity would miss a central chemical requirement of this glycolytic step.
Phosphoenolpyruvate matters because it is a high-energy compound that is subsequently used to generate ATP. Enolase therefore connects the rearrangement of a phosphorylated glycolytic intermediate with a later energy-producing step. Tracking this conversion helps relate a specific enzymatic reaction to the cell’s broader capacity to extract usable energy from glucose.
Tissue-specific isoforms matter because the same glycolytic pathway can be associated with different cellular identities. Their distribution provides a molecular connection between enolase and differentiation, the process by which cells acquire specialized characteristics. Examining which isoforms are present can therefore add biological context to metabolic measurements, rather than treating enolase as identical in every tissue.
Researchers can use enolase measurements as an indicator of glycolytic function, asking how effectively cells process a key intermediate in the pathway. The result provides information about one defined step linking 2-phosphoglycerate with the high-energy product phosphoenolpyruvate. This makes enolase useful when comparing cellular metabolic states and examining changes in energy production from glucose.
Changes in enolase activity can help investigators examine metabolic alterations associated with disease. Because enolase participates in glycolysis, altered measurements may indicate that a cell’s handling of glucose-derived energy has shifted. Researchers can use this information to compare disease-related states with physiological conditions and investigate how cellular metabolism changes in response to disease.
Enolase is relevant when cells face changing physiological conditions because its activity reflects a step in energy production from glucose. Comparing enolase across such conditions can show whether glycolytic function changes as cellular demands change. Its occurrence across domains of life also supports study of a broadly shared metabolic process while allowing comparisons among organisms and tissues.