Homo sapiens C/D box snoRNA U96a. This snoRNA was identified in a systematic search for conserved sequences in the introns of the GNB2L1 gene, the host gene of U95 (Vitali et al., 2003). In the human, but not the mouse, a second near perfect copy (U96b) resides in an intron of the AMMECR1 gene. Rodent U96 is also known as Z37 snoRNA. Both U96a and U96b are predicted to guide the 2'O-ribose methylation of 5.8S rRNA G75.