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This method can be used to investigate protein-protein interactions, as well as to investigate modulators of protein-protein interactions by assessing ternary complex formation. An example for such modulators are PROTACs, which are investigated for their therapeutic potential in cancer therapy.
The stability-based methods below are thought to work due to ligand-induced shifts in equilibrium concentrations of protein conformational states. A single protein type in solution may be represented by individual molecules in a variety of conformations, with many of them different from one another despite being identical in amino acid sequence.
Another important distinction to identify protein–protein interactions is the way they have been determined, since there are techniques that measure direct physical interactions between protein pairs, named “binary” methods, while there are other techniques that measure physical interactions among groups of proteins, without pairwise ...
Methods that screen protein–protein interactions in the living cells. Bimolecular fluorescence complementation (BiFC) is a technique for observing the interactions of proteins. Combining it with other new techniques, dual expression recombinase based methods can enable the screening of protein–protein interactions and their modulators. [1]
Other methods include surface plasmon resonance (SPR), [54] [55] protein microarrays, dual polarisation interferometry, microscale thermophoresis, kinetic exclusion assay, and experimental methods such as phage display and in silico computational methods. Knowledge of protein-protein interactions is especially useful in regard to biological ...
Transiently transfected mammalian cells are used in this system to find protein-protein interactions. [27] [28] Using a mammalian cell line to study mammalian protein-protein interactions gives the advantage of working in a more native context. [5] The post-translational modifications, phosphorylation, acylation and glycosylation are similar.
Protein–protein interaction prediction is a field combining bioinformatics and structural biology in an attempt to identify and catalog physical interactions between pairs or groups of proteins. Understanding protein–protein interactions is important for the investigation of intracellular signaling pathways, modelling of protein complex ...
The study of interactomes is called interactomics. The basic unit of a protein network is the protein–protein interaction (PPI). While there are numerous methods to study PPIs, there are relatively few that have been used on a large scale to map whole interactomes.