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Schematic diagram of the NTA-Ni2+ functionalized Au NPs for surface recognition of the thermoresponsive S4E8G protein polymers, facilitated by an N-terminal polyhistidine tag.42 The responsive self-assembly characteristics of Au-S4E8Gs are based on the thermally reversible conformational switching in the elastin-like block between the hydrophilic random coil conformation and the hydrophobic β-spiral adopting repetitive type II β-turns.26−28,31
