snoRNA U50 belongs to the C/D box class of snoRNAs which contain the conserved sequence motifs known as the C box (UGAUGA) and the D box (CUGA).
snoRNA U50 belongs to the C/D box class of snoRNAs that contain the well-defined sequence motifs C box (UGAUGA) and D box (CUGA), which are typical for this group.