snoRNA Z266 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 Z266 is a type of small nucleolar RNA (snoRNA) that falls under the category of C/D box snoRNAs, characterized by specific sequence motifs known as the C box (UGAUGA) and the D box (CUGA), which are also present in other snoRNAs.