PCR was performed using either Phusion U Green Multiplex PCR Master Mix (ThermoFisher Scientific) or Q5 Host Start High-Fidelity 2x Master Mix (New England Biolabs) unless otherwise noted. All plasmids were assembled by either the USER cloning method as previously described20 (link) or by Gibson assembly21 (link). Plasmids for mammalian cell transfections were prepared using an endotoxin removal plasmid purification system, ZymoPURE Plasmid Midiprep (Zymo Research Corporation).