Many years of experience and professional expertise in the chemistry divisions of Upstate®, Chemicon®, and Calbiochem®, using the latest, most advanced production platforms, have created active, reproducible proteins that will perform their biological activity as expected. See our entire collection of proteins, including kinases, ECM proteins, ubiquitin proteins, histones and substrates for them that can be ordered in the catalogue packaging, in bulk, as well as in synthesis, as needed.