Japanese encephalitis virus structural antigen (JEV structural antigen)

Japanese encephalitis virus structural antigens primarily refer to the envelope (E), membrane (M), and capsid (C) proteins encoded by the virus's single-stranded RNA genome[4]. Among these, the **envelope (E) protein** is of principal importance: it mediates receptor binding and membrane fusion required for viral entry into host cells and is the principal target of protective neutralizing antibodies[1][2][4]. The E protein forms the outer shell of the mature virion, is highly immunogenic, and contains several motifs critical for neuronal receptor binding and neurovirulence. Mutations within specific E protein residues (for example, Glu138) can dramatically alter neurovirulence and infectivity[1]. The E protein structure is comprised of three domains and facilitates both viral entry and assembly of the virion[2]. The membrane (M) and capsid (C) proteins are also structural but play secondary roles in immune recognition. Vaccines and antibody therapies targeting the E protein are in use or development, though no small-molecule drugs specifically target these antigens. Because "Japanese encephalitis virus structural antigens" collectively refers to multiple distinct proteins (C, M, E), this target is **not the most specific or canonical form** for drug discovery or mechanistic biology—**the envelope (E) protein** is usually the canonical focus[1][2][4].

Other names

JEV structural proteinJapanese encephalitis virus E protein (for envelope; see description)Japanese encephalitis virus M protein (for membrane; see description)Japanese encephalitis virus C protein (for capsid; see description)

Antibody-mediated neutralization; Prevention of virus-host cell receptor interaction; Inhibition of viral membrane fusion