Homo sapiens C/D box snoRNA mgU6-47. This snoRNA was initially characterized in the mouse genome by a bioinformatics search of anti-sense elements followed by CTGA (Tykowski et al., 1998). Its human orthologue was described by Zhou et al. (2002), and named Z30. It is predicted to guide the 2'O-ribose methylation of U6 snRNA A47. Zhou et al. (2002) showed that, in the fission yeast, mgU6-47 is required for the methylation of U6 snRNA A47.