Protein Chemistry is a section of the Leiden Institute of Chemistry at Leiden University. The section is headed by Prof. Dr. Marcellus Ubbink.

The research is aimed at understanding protein structure and function. Particular interests comprise protein-protein interactions & enzyme function (Prof. Ubbink), and drug discovery technologies (Dr. Siegal).

The section houses equipment for recombinant protein production and a variety biophysical characterisation methods and hosts the spin-out company ZoBio.