In Vitro Reconstitution
In Vitro Reconstitution - Related Videos
09:25
In vitro Reconstitution of the Active T. castaneum Telomerase
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Cited by 5 •
2011
Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more than a decade. Here, we present methods for the isolation of the recombinant Tribolium castaneum TERT (TcTERT) and the reconstitution of the active T. castaneum telomerase ribonucleoprotein (RNP) complex in vitro.
10:25
Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
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Cited by 9 •
2016
Platelet transfusion and hemostasis was modeled using blood reconstitution and microfluidic flow chambers to investigate the function of blood banking platelets. The data demonstrate the consequences of platelet storage lesion on hemostasis, in vitro.
07:05
Reconstitution of Membrane Proteins
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2023
Reconstitution is the process of returning an isolated biomolecule to its original form or function. This is particularly useful for studying membrane proteins, which enable important cellular functions and affect the behavior of nearby lipids. To study the function of purified membrane proteins in situ, they must be reconstituted by integrating them into an artificial lipid membrane. This video introduces membrane protein reconstitution concepts and related procedures, such as protein...
07:58
In-vitro Reconstitution of Bacterial Ubiquitination and VCP/p97-mediated Elimination
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2026
This protocol describes a method to ubiquitinate Streptococcus pneumoniae using mammalian cell lysate or pure ubiquitin enzyme complex, followed by treatment with purified VCP/p97-UFD1-NPLOC4 protein complex to assess its bacteriolytic activity, enabling the study of ubiquitin-dependent immune effectors.
02:36
In Vitro Reconstitution and Purification of Viral Nucleocapsid-Like Particles
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2026
Source: Gao, Y., et al. Generation and Assembly of Virus-Specific Nucleocapsids of the Respiratory Syncytial Virus. J. Vis. Exp. (2021)The video demonstrates the in vitro assembly of virus-specific nucleocapsids from a purified RNA-free nucleoprotein–phosphoprotein complex, their purification by size exclusion chromatography, and validation of full-length viral RNA within the assembled particles.
FAQs
By omitting selected components and then adding them back individually or in defined combinations, researchers can test whether each molecule contributes to the activity. This separation distinguishes required components from molecules that are present but not directly involved. The approach therefore links a measured biological outcome to specific proteins, nucleic acids, lipids, or energy sources.
These variables can determine whether the reconstituted system reaches the intended state and produces the expected activity. Changing component concentrations tests how molecular abundance affects function, while altering addition order can expose sequential dependencies. Temperature and chemical conditions further shape molecular interactions, allowing researchers to examine which environmental requirements are essential for the process.
A living cell contains many interacting systems that can obscure which molecules directly produce an observed effect. In vitro reconstitution reduces that complexity by using selected components under controlled conditions. This makes direct molecular interactions easier to separate and analyze, although the resulting system represents a focused reconstruction rather than the full complexity of an intact cell.
The method can be tailored to membrane transport, cytoskeletal assembly, signaling, or gene expression by supplying the components associated with each process. Researchers can then adjust the system and examine how its activity changes. These focused reconstructions help connect molecular interactions to larger biological mechanisms and support quantitative descriptions of how the processes function.
A typical design begins by identifying the molecules needed for the activity and preparing purified or otherwise defined components. Researchers combine them under controlled laboratory conditions, selecting concentrations, addition order, temperature, and chemical environment. They then compare system behavior across these conditions to determine which components and parameters are associated with the reconstructed activity.
It is especially useful when researchers need to isolate direct molecular interactions from the surrounding complexity of a cell. The approach can clarify how a membrane transport event, cytoskeletal structure, signaling reaction, or gene-expression process depends on defined components. It also provides a controllable setting for testing mechanisms and generating quantitative models.
Because the components and conditions can be selected and adjusted independently, researchers can build systems with more predictable inputs and outputs than a whole-cell context may allow. These reconstructions provide a foundation for quantitative modeling and for designing controllable cell-free systems. In biology, that control helps connect molecular composition and environmental conditions with system behavior.