+A [protein complex](/wiki/protein_complex) is a group of two or more associated [polypeptide](/wiki/polypeptide) chains, often forming a larger, functional macromolecule. These assemblies perform crucial roles, from catalyzing reactions to providing structural support within a cell.
+## See also
+- [Protein](/wiki/protein)
+- [Enzyme](/wiki/enzyme)
+- [Molecular Biology](/wiki/molecular_biology)