Fig. 6

Glycosites of S protein and their functions. a The functions of glycosylation of S protein. Different shapes and colors represent the corresponding functions, and the gray indicates that the functions of the sites are unknown. b Structure-based display of the N-glycosites in the S protein. The glycosites of S protein are marked on the three-dimension structures. S protein is shown in the “RBD up” state. A top view and a side view (up) of the S protein (PDB: 6VYB) are presented. N74 and N165 are not labeled due to the information missed in the crystal structure³³¹