Maize white line mosaic satellite virus (syn.

It is the only species in genus Aumaivirus, which is a member of realm Riboviria without assigned family or order.

SMWLMV has a genome consisting of linear single-stranded RNA of positive polarity.

It has a length of 1,168 nucleotides and consists of a single gene that encodes a capsid protein (CP).

As in satellite tobacco necrosis virus (STNV),[3] the SMWLMV virion is 17 nm in diameter, but the capsid protein has limited sequence homology with the corresponding proteins of STNV viruses.