SARS-CoV-2 membrane protein (M protein) (M protein)

The SARS-CoV-2 membrane (M) protein is a critical structural component that serves as a scaffold for viral assembly and budding. As the most abundant protein in the viral envelope, M mediates interactions with spike (S), envelope (E), and nucleocapsid (N) proteins, organizing their localization to sites of viral assembly. The M protein contains multiple T cell epitope regions that are recognized by CD4+ and CD8+ T cells following natural infection or vaccination. While specific M protein-derived epitopes (such as nucleocapsid protein cross-reactive regions) can generate robust T cell responses, the M protein itself is not a direct pharmaceutical drug target. Rather, M protein epitopes are of significant interest for rational vaccine design, as they represent conserved immunodominant regions less susceptible to viral mutations compared to spike protein epitopes, potentially providing durable cross-protection against SARS-CoV-2 variants.

Other names

Membrane glycoproteinE1 membrane glycoproteinMatrix protein

N/A for epitopes (they are vaccine immunogens, not drug targets)