Plays a role in the inhibition of host antibody-mediated neutralization without blocking viral cell entry. Forms an icosahedral capsid with a T=1 symmetry and a 34 nm diameter. The capsid is composed of 60 copies linked to each other. Binds to the 5' end of the genomic RNA to mediate genome encapsidation (PubMed:14671114, PubMed:15557331). Binds to heparin surface proteoglycans (HSPGs) to mediate viral entry. Additionally, the interactions with host ASGR1 and ASGR2 facilitate viral infection of hepatocytes (By similarity). Homodimers. Self-assembles to form the capsid. The capsid is dominated by dimers that define the 30 morphological units. Interacts with phosphorylated protein ORF3 (By similarity). Interacts with host TMEM134. Interacts with host ASGR1 and ASGR2; these interactions facilitate infection of host hepatocytes (By similarity). Exists as a glycosylated dimer. Belongs to the hepevirus capsid protein family.