Interactions between biomolecules are the key drivers of any biological process. For example, protein-protein interactions ensure signal transduction across membranes via G protein-coupled receptors (GPCRs) and maintain the structure of complexes by chaperones. These types of interactions also allow enzymatic modification of proteins via post-translational phosphorylation. Hundreds of thousands of interactions have been identified and collected in databases, for example IntAct. Such a database allows the interactions to be assembled into pathways and studied further.
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