Complex and comprehensive study of the interactions between various proteins and between protein and other molecules within a cell, such as nucleic acids and metabolites, as well as the consequences of these interactions.
Source:
PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1184 (https://doi.org/10.1515/pac-2016-1120)