Homo sapiens ACA54 snoRNA
This H/ACA box RNA was cloned by Kiss et al. (2004) from a HeLa cell extract immunoprecipitated with an anti-GAR1 antibody. It is predicted to guide the pseudouridylation of 28S rRNA U3801 (Schattner et al., 2006) and U4539 (T. Kiss, pers. comm.), although only the modification of the former base has been experimentally established (Maden, 1997).