Preferred Label : nucleoside q;
MeSH definition : 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.;
MeSH synonym : q ribonucleoside; q-ribonucleoside; q nucleoside; queuosine;
MeSH hyponym : nucleoside Q*;
MeSH CAS label : 4H-Pyrrolo(2,3-d)pyrimidin-4-one, 2-amino-5-(((4,5-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-1,7-dihydro-7-beta-D-ribofuranosyl-,
(1S-(1alpha,4beta,5beta))-;
MeSH Related Number : nucleoside Q*; 70293-97-9 (nucleoside Q*);
Registry Number MeSH : 57072-36-3;
Related CAS MeSH : 70293-97-9 (Nucleoside Q*);
MeSH annotation : /biosyn /physiol permitted;
Is substance : O;
Origin ID : D009704;
UMLS CUI : C0028619;
Allowable qualifiers
Automatic exact mappings (from CISMeF team)
Record concept(s)
Related MeSH Supplementary Concept(s)
Semantic type(s)
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.