The snoRNAs U86, U56, U57 and HBII-55,of the C/D family, and the H/ACA box snoRNA ACA51 share the same host gene (NOL5A) with U86.
The snoRNAs U86, U56, U57, and HBII-55, which belong to the C/D family, as well as the H/ACA box snoRNA ACA51, all share a common origin in the host gene (NOL5A) that gives rise to U86.