Hepatitis E virus capsid, molecular model. This virus causes the disease hepatitis E in humans. Transmitted by faecal-oral contact, this virus causes low-level liver inflammation that can become more severe. In viruses, the capsid is the protein shell that encloses the genetic material. A capsid consists of subunits called capsomeres that self-assemble to form the shell seen here. Here, this shell, approximately spherical in shape, has icosahedral symmetry. One of the functions of the capsid is to aid the transmission of the viral genetic material into host cells.
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