In Vitro Assembly
In Vitro Assembly - Related Videos
04:49
In Vitro Nuclear Assembly Using Fractionated Xenopus Egg Extracts
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Cited by 5 •
2008
Nuclear membrane assembly is an essential step in the cell division cycle; this process can be replicated in the test tube by combining Xenopus sperm chromatin, cytosol, and light membrane fractions. Complete nuclei are formed, including nuclear membranes with pore complexes, and these reconstituted nuclei are capable of normal nuclear processes.
09:47
Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly
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Cited by 6 •
2012
A simple, efficient and robust way to synchronize the delivery of multiple viral components to plant cells via Agrobacterium-mediated transient expression is described. This approach is amenable for studying replication, encapsidation followed by in vitro reassembly of non-viral components into genome depleted optical viral ghosts suitable for biomedical applications.
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
08:56
In vitro Assembly of Semi-artificial Molecular Machine and its Use for Detection of DNA Damage
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Cited by 4 •
2012
We demonstrate the assembly and application of a molecular-scale device powered by a topoisomerase protein. The construct is a bio-molecular sensor which labels two major types of DNA breaks in tissue sections by attaching two different fluorophores to their ends.
02:41
Protein Complex Assembly
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2020
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes. Many viruses self-assemble into a fully functional unit using the infected host cell to...
FAQs
Molecular recognition allows purified components to identify and bind appropriate partners, while self-organization enables those interactions to generate larger structures without direct cellular control. Binding can establish initial contacts, and subsequent nucleation or polymerization can extend the assembly. Studying these linked processes helps researchers determine how specific molecular interactions contribute to biological architecture.
Nucleation can create the initial organized structure from which additional components assemble, whereas polymerization supports the ordered growth of molecular or cellular-scale structures. Their relative contributions help explain how an assembly begins and develops. Examining these steps separately is useful when researchers want to connect a final structure with the interactions that produced it.
Component concentration, temperature, pH, and ionic strength can all alter molecular interactions and therefore change the structure that forms. These variables may affect binding, nucleation, or polymerization, making controlled adjustment essential for interpreting results. Comparing assemblies under different conditions allows researchers to identify which physical or chemical factors are associated with particular structural outcomes.
Researchers first select and purify the biological components relevant to the structure under investigation. They then combine those components outside living cells while controlling conditions such as concentration, temperature, pH, and ionic strength. The resulting assembly can be examined to determine how the selected components and environmental variables influence molecular organization and structure formation.
This approach is useful when researchers need to isolate a specific assembly mechanism from the complexity of a living cell. By working with purified components, they can focus on how proteins, nucleic acids, membranes, or cytoskeletal components interact. The resulting experiments support analysis of molecular architecture and clarify which components contribute to organized biological systems.
In synthetic biology, controlled assembly experiments can inform the study or design of organized systems built from selected biological components. In biomaterials research, they help investigate how molecular interactions produce useful structures. The same strategy also supports studies of disease-related assembly defects by providing a controlled setting for examining how altered organization differs from an intended structure.