Heterologous Complex Formation
Heterologous Complex Formation - Related Videos
10:41
The Logic, Experimental Steps, and Potential of Heterologous Natural Product Biosynthesis Featuring the Complex Antibiotic Erythromycin A Produced Through E. coli
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Cited by 4 •
2013
The heterologous biosynthesis of erythromycin A through E. coli includes the following experimental steps: 1) genetic transfer; 2) heterologous reconstitution; and 3) product analysis. Each step will be explained in the context of the motivation, potential, and challenges in producing therapeutic natural products using E. coli as a surrogate host.
03:45
Formation of Complex Ions
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2020
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
11:42
Bottlenose Dolphin (Tursiops truncatus) Spermatozoa: Collection, Cryopreservation, and Heterologous In Vitro Fertilization
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Cited by 8 •
2017
Here, we present protocols that have been successfully used for dolphin spermatozoa collection, cryopreservation, and heterologous IVF performance using bovine oocytes.
03:06
An In Vitro Technique to Study Inflammasome Complex Formation in Macrophages
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2025
This video demonstrates a technique to study NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome formation in primary macrophages via immunofluorescence. The macrophages are first primed with bacterial lipopolysaccharide (LPS) to upregulate NLRP3 protein expression. Exposing the macrophages to nigericin—a potassium ionophore—leads to the activation of NLRP3 and the formation of inflammasomes, which are visualized via immunofluorescence.
11:17
Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous β2-Microglobulin
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Cited by 1 •
2021
The protocol describes experimental methods to obtain stable major histocompatibility complex (MHC) class I through potential β2-microglobulin (β2m) substitutions from different species. The structural comparison of MHC I stabilized by homologous and heterologous β2m were investigated.
FAQs
The key determinant is whether the introduced subunits retain compatible binding interfaces. When genes encoding the desired proteins are expressed together in a host cell, the resulting subunits can recognize one another and associate into a complex. This makes co-expression important because producing components in the same cellular environment supports examination of interaction specificity and the resulting assembly.
Controlled expression conditions can help preserve the assembled structure while the component proteins are produced in a non-native system. Such control is important when researchers need to examine subunit stoichiometry, meaning the relative composition of the complex, rather than only detect individual proteins. Maintaining assembly improves the usefulness of the resulting material for structural and functional studies.
The main advantage is access to complexes that may be difficult to obtain directly from their native biological source. A non-native host provides a way to produce selected components together and examine their association under defined experimental conditions. This approach can therefore support interaction, structure, stoichiometry, and function studies when native material is limited or inaccessible.
Researchers introduce genes encoding the desired protein components into a host cell, then arrange for compatible subunits to be co-expressed. They may use controlled expression conditions to support proper assembly and co-purification to retain the complex during recovery. The resulting material can then be examined for association, composition, structure, or function, depending on the research question.
The assembled material can reveal whether specific proteins interact and how many copies or types of subunits make up the complex. Researchers can also investigate structural organization and functional behavior. These measurements connect molecular association with biological activity, allowing the system to serve as a framework for studying mechanisms that may be difficult to resolve using native material alone.
This approach is useful when researchers need to study molecular mechanisms or build a reconstituted biological system from selected components. It also supports engineered complexes for biotechnology and biomedical research. By choosing the proteins and host system, investigators can examine defined interactions and functions, or create assemblies suited to a particular experimental or development goal.