SARS-CoV-2 non-spike structural proteins (E, M, N proteins)

The SARS-CoV-2 non-spike structural proteins consist of the Envelope (E), Membrane (M), and Nucleocapsid (N) proteins, which are vital for the virus's structural assembly and replication [1.1.1, 1.1.2]. The E protein is a small viroporin that forms ion channels in host membranes, playing a critical role in viral budding and the induction of inflammatory signaling pathways [1.3.2, 1.3.5]. The M protein is the most abundant structural protein and serves as the primary driver of viral morphogenesis by organizing the assembly of other structural components and inducing membrane curvature [1.4.1, 1.4.2]. The N protein is a multifunctional RNA-binding protein that encapsulates the viral genome into a ribonucleoprotein complex and modulates viral RNA synthesis and host immune responses [1.2.1, 1.2.2]. These proteins are significantly more conserved than the Spike protein, making them attractive targets for broad-spectrum antiviral drugs and reliable diagnostic markers [1.2.3, 1.4.3]. Therapeutic strategies include small-molecule inhibitors like JNJ-9676, which targets the M protein to block assembly, and K31, which inhibits the N protein's ability to bind viral RNA [1.4.1, 1.2.3].

Other names

SARS-CoV-2 Envelope, Membrane, and Nucleocapsid proteinsSARS-CoV-2 E, M, and N proteinsSARS-CoV-2 structural proteins (excluding Spike)SARS-CoV-2 accessory structural proteins

Inhibition of viral assembly and morphogenesis, disruption of viroporin-mediated ion channel activity, and interference with viral RNA-binding and genome encapsidation.