Fig. 1: Engineering protein-based shape-morphing hydrogels based on bilayer structures.
From: Engineering shape memory and morphing protein hydrogels based on protein unfolding and folding
a Left: The structure of folded globular GB1 domain (PDB code 1PGA). Right: The modeled three-dimensional structure of the FL domain using SWISS MODEL. b (GB1)8 (left) and (FL)8 (right) could be readily gelated using the [Ru(bpy)3]2+-mediated photochemical cross-linking strategy. c Swelling ratios (SR) of 20% (FL)8, 20% (GB1)8, and 20% denatured-cross-linking-(FL)8 (DC-(FL)8) hydrogels at different GdmCl concentrations. The SR of 20% (FL)8 exceeded that of 20% (GB1)8 hydrogel at around 0.6 M [GdmCl], as indicated by the dashed line. d The predicted bidirectional bending behaviors of (GB1)8/(FL)8 bilayer hydrogel in response to GdmCl concentration change.
