Interactions between biomolecules or within a biomolecule (e.g. hydrogen bonds, electrostatic interactions, and van der Waals forces) taking part in the stabilization of proper biomolecule structure and intermolecular interactions.
Source: PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1185 (https://doi.org/10.1515/pac-2016-1120)