Association of one protein with one or more other proteins to form either homo- or heteromeric proteins or protein complexes.
Note: Such associations are common in biological systems and are responsible for the regulation of numerous cellular functions in addition to the mediation of disease morphology, where aberrant interactions play a significant role.
Source:
PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1185 (https://doi.org/10.1515/pac-2016-1120)