quaternary structure

The defined organization of two or more macromolecules with @T06282@ such as a protein that are held together by hydrogen bonds and van der Waals and coulombic forces.
See also:
primary structure
secondary structure
tertiary structure
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2216 [Terms] [Paper]