PKCLab.org - Columbia University

Centro de Biologia Molecular "Severo Ochoa"

Stellenbosch University

Washington University in St. Louis - Department of Biochemistry and Moelcular Biophysics

Hungarian Academy of Sciences Institute of Enzymology

University of Minnesota Biocatalysis/Biodegradation Database (UM-BBD)

Stony Brook University - Department of Biochemistry and Cell Biology