Source (all of the below protein structures): PDB (Protein Data Bank)
Influenza Virus
Rubella Virus
Measles Virus
Mumps Virus
Coronavirus
Image Credit pic #1: https://cen.acs.org/biological-chemistry/infectious-disease/Tracking-individual-flu-viruses-reveals/97/web/2019/02
Image Credit pic #2: https://thenativeantigencompany.com/products/rubella-glycoprotein-e1-strain-f-therien-protein/
Image Credit pic #3: https://nypost.com/2019/04/29/measles-outbreak-across-us-hits-25-year-high/
Image Credit pic #4: https://thenativeantigencompany.com/products/mumps-virus-lysate/
Image Credit pic #5: https://www.npr.org/series/812054919/the-coronavirus-crisis