Virus Capsids

A virus capsid is the protective shell surrounding a virus's genetic material, made up of protein units called capsomers. Think of it as a highly organized container that safeguards the virus’s core—its DNA or RNA—and helps it infect host cells. Capsids come in various shapes, such as icosahedral (sphere-like) or helical (spiral). They are crucial for virus stability and recognition, enabling the virus to attach to and enter specific cells. Without the capsid, the virus's genetic material would be vulnerable and less effective at establishing infection.