Modified nucleotides in 5S ribosomal RNA

Position 
Modification 
Organism 
EUKARYOTA 
38a
pseudouridine
Euglena gracilis
49a
pseudouridine
some Ascomycetes
PROKARYOTA 
32 (30) 
2'-O-methylcytidine
Sulfolobus solfataricus
35 (30)
N-4-acetyl-2'-O-methylcytidine
Pyrodictium occultum
41 (40) or 77 (78) 
N-4-acetylcytidine
Pyrodictium occultum