Peplomers, also known as spike proteins, are glycoprotein structures found on the surface of certain viruses, including coronaviruses. They play a crucial role in viral attachment and entry into host cells by binding to specific receptors on the host cell surface. The structure of peplomers is key to the virus's ability to infect cells and is often a target for vaccines and therapeutic interventions. Their unique characteristics can also influence the virus's infectivity and immune response.