The incorporation of synthetic polymers into biomolecular materials provides a powerful strategy to enhance their properties. We recently showed that the interstitial spaces of highly solvated mesoporous ferritin crystals could be infiltrated with acrylate (Ac) and acrylamide (Am) monomers, which are subsequently polymerized in crystallo to yield a new class of hybrid materials termed Polymer-Integrated Protein Crystals (PIX). Our earlier studies had shown that ferritin-PIX displayed rema