Homo sapiens C/D box snoRNA mgU6-53. This snoRNA was cloned by Ganot et al. (1999) and is predicted to guide the 2'O-ribose methylation of U6 snRNA A53. Note that the published sequence (AJ243222) differs from the genomic sequence by 2 nts. A closely related copy, mgU6-53B, resides in the same host gene.