Definitions of Q Ribonucleoside

  1.   A modified nucleoside which is present in the first position of the anticodon of tRNA tyrosine tRNA histidine tRNA asparagine and tRNA aspartic acid of many organisms It is believed to play a role in the regulatory function of tRNA Nucleoside Q can be further modified to nucleoside Q which has a mannose or galactose moiety linked to position 4 of its cyclopentenediol moiety