This family includes several known plant viral movement proteins (e.g. Swiss:Q85292) from a number of different ssRNA plant virus families including potexviruses, hordeiviruses and carlaviruses.

1: The nucleotide sequence of potato mop-top virus RNA 2: a novel type of genome organization for a furovirus. Scott KP, Kashiwazaki S, Reavy B, Harrison BD; J Gen Virol 1994;75:3561-3568. PMID:7996148