ACA58 was originally cloned from HeLa cells and belongs to the H/ACA box class of snoRNAs as it has the predicted hairpin-hinge-hairpin-tail structure, has the conserved H/ACA-box motifs and is found associated with GAR1 protein.
ACA58 was first obtained from HeLa cells and falls under the category of small nucleolar RNAs (snoRNAs) that exhibit a specific structural pattern, characterized by hairpin-hinge-hairpin-tail motifs and conserved H/ACA-box sequences. Its association with GAR1 protein is also noteworthy.