SARS-CoV-2 viral antigens (SARS-CoV-2 antigens)

SARS-CoV-2 viral antigens represent the diverse set of proteins encoded by the SARS-CoV-2 genome, excluding the primary Spike protein. This group includes structural proteins such as the Nucleocapsid (N) protein, which is responsible for packaging the viral RNA; the Membrane (M) protein, which drives viral assembly; and the Envelope (E) protein, which functions as an ion channel and facilitates viral release [1][2][3]. Additionally, it encompasses non-structural proteins (NSPs) like the Main Protease (Mpro) and RNA-dependent RNA polymerase (RdRp), which are indispensable for viral replication and transcription [4]. These antigens are critical targets for diagnostic testing, particularly the N protein due to its abundance and relative conservation across variants [5]. Therapeutically, NSPs are the primary targets for small-molecule antivirals like Nirmatrelvir and Remdesivir, while structural proteins are increasingly explored in multi-antigen vaccine designs to induce more robust and variant-resistant T-cell responses [6][7].

Other names

Other SARS-CoV-2 viral antigensSARS-CoV-2 structural proteinsSARS-CoV-2 non-structural proteinsNucleocapsid proteinMembrane proteinEnvelope proteinMain protease (Mpro)RNA-dependent RNA polymerase (RdRp)NSPORF proteins

Inhibition of the viral main protease (Mpro/3CLpro) to prevent polyprotein cleavage, inhibition of the RNA-dependent RNA polymerase (RdRp) to terminate viral RNA synthesis, and induction of immune responses against conserved structural proteins to provide broad-spectrum protection [4][6].