《英文msh词典》Q-Ribonucleoside
[入口词] Q-Ribonucleoside
[主题词] Nucleoside Q
[英文释义] 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.