3D printed model properties
Standard polylactic acid (PLA) filament used in 3D printing proved too brittle to enable assembly of Monofoil (and domain-swapped) oligomers without fracturing. Thermoplastic urethane (TPU) filament was therefore used for 3D printing of all molecular models. The flexibility of TPU permitted interface adjustments that tended to promote structural complementarity of all models. Analysis the printed models shows that for the scale (2.8 mm/Å) and printing properties utilized, the models had an average mass of 1.79±0.11 g/amino acid (Table 1).