Chikungunya virus structural protein E1 (E1)

Chikungunya virus (CHIKV) is an alphavirus with an enveloped, icosahedral structure consisting of several **structural proteins** encoded by its genome: **E1 and E2 envelope glycoproteins** form heterodimers that assemble into trimeric spikes covering the viral surface, mediating host cell attachment (E2) and membrane fusion (E1)[1][2][3][5][6][7]. The **capsid protein (C)** forms the internal nucleocapsid, encapsulating the viral RNA genome and facilitating virus assembly[2][3]. The maturation of these proteins, notably the cleavage of p62 into E3 and E2 in the trans-Golgi, is required for producing infectious virions[1][6]. - **E1 glycoprotein** is essential for virus-host membrane fusion, triggered by acidic pH in the endosome[7]. - **E2 glycoprotein** binds to host cell receptors and shields the E1 fusion loop until activation[2][3][5][6]. - **Capsid protein** packages viral RNA and interacts with the cytoplasmic tail of E2, linking the genome to the envelope[2][3][4]. These proteins are central to the virus life cycle and are prime **therapeutic targets** for antivirals and vaccine design. However, "Chikungunya virus structural proteins E1/E2/Capsid" is not a single molecular entity but refers collectively to separate viral proteins; specificity is recommended in drug development or mechanistic studies[1][2][6].

Other names

CHIKV E1 glycoproteinE1 envelope protein

Inhibition of viral entry via blockade of fusion (targeting E1) - Inhibition of virus-receptor binding (targeting E2) - Interference with viral assembly or encapsidation (targeting capsid protein)