Subcellular Compartments
Subcellular Compartments - Related Videos
04:10
Measuring Proteasome Activity in Different Subcellular Compartments of the Rat Brain
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2025
This video demonstrates how to measure proteasome activity in different subcellular compartments of the lateral amygdala from fear-conditioned and control rat brains using a fluorogenic peptide assay. The proteasome cleaves the fluorogenic peptide substrate, releasing fluorescent molecules, which are quantified using a plate reader to assess proteasome activity in the nuclear and synaptic protein fractions. Increased nuclear activity suggests changes in gene expression, while reduced synaptic...
10:13
Methods to Assess Subcellular Compartments of Muscle in C. elegans
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Cited by 29 •
2014
Skeletal muscle is essential for locomotion and is the bodies’ main protein store. Muscle health measurements within C. elegans are described. Prospective changes to muscle structure and function are assessed using localized GFP and cationic dyes.
06:10
Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein
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Cited by 1 •
2020
This protocol describes the assessment of subcellular compartment-specific redox status within the cell. A redox-sensitive fluorescent probe allows convenient ratiometric analysis in intact cells.
02:33
Spontaneous Calcium Imaging for Compartment-Specific Dynamics in Astrocytes
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2025
Source: Bannai, H., et. al., Dissection of Local Ca2+ Signals in Cultured Cells by Membrane-targeted Ca2+ Indicators. J. Vis. Exp. (2019)The video demonstrates fluorescence imaging to observe compartment-specific spontaneous calcium dynamics in astrocytes by sequentially monitoring calcium-sensitive proteins localized on the plasma membrane and endoplasmic reticulum.
04:25
Enriching Subcellular Proteins in Leptospira Using a Triton X-114-Based Fractionation Approach
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Cited by 1 •
2025
Though prokaryotes lack an organellar system, there are subcellular regions with localized proteins. Quantitative and qualitative analysis of the enzymes and proteins in the subcellular regions is important for developing drug and vaccine targets. Here, we illustrate the subcellular fractionation of Leptospiral proteins using Triton X-114 and its analysis.
FAQs
These organizing features concentrate selected molecules and reactions without relying on a single structural principle. Membrane-bound organelles establish separated regions, whereas phase-separated structures and localized molecular interactions organize components through concentration and spatial association. Together, they influence which molecules can interact, where reactions occur, and how regulatory activities remain coordinated within the cell.
Transport controls the movement of molecules between cellular regions, while local chemical conditions help determine whether particular reactions or interactions can proceed efficiently. This coordination restricts access to selected components and maintains functional differences among compartments. As a result, cells can organize metabolism, signaling, gene expression, and quality-control activities in appropriate locations rather than distributing them uniformly.
When compartment organization is altered, molecules, reactions, or regulatory activities may no longer remain appropriately localized. That disruption can interfere with the coordination of metabolism, signaling, gene expression, or quality control. Studying these changes is therefore relevant to disease research, because abnormal cellular organization can reveal links between compartment structure and impaired biological function.
Microscopy provides a way to examine compartment structure within cells, while protein localization assays help determine where particular proteins are positioned. Used together, these approaches connect visible organization with the distribution of molecular components. They can help researchers relate a compartment's location to its possible role in regulating reactions, signaling, gene expression, or cellular quality control.
Cell fractionation separates cellular material into distinct fractions, and organelle isolation obtains particular cellular structures for further study. These techniques complement imaging by allowing researchers to examine compartment-associated components outside the intact cell. Their use supports analysis of compartment structure and function in biological techniques, biochemistry, and cell biology, especially when localization must be investigated alongside molecular composition.
Researchers study them when they need to understand how cells coordinate complex activities or how altered organization relates to disease. Microscopy, fractionation, organelle isolation, and protein localization assays provide complementary information about structure, components, and function. The resulting evidence can support investigations across cell biology, biochemistry, and biomedical science, including studies of metabolism, signaling, gene expression, and quality control.