The SARS-CoV-2 spike glycoprotein is flexible, and its receptor-binding ___domain (RBD) fluctuates between open and closed conformations. Disulfide bonds are engineered into the spike ectodomain to lock the RBD in the closed state, leading to a construct with high thermostability.
- Xiaoli Xiong
- Kun Qu
- John A. G. Briggs