Definition of guanosine in US English:



  • A compound consisting of guanine combined with ribose, a nucleoside unit in RNA.

    • ‘Since guanosine is not converted to adenine nucleotides in flies, guanosine must somehow act indirectly, perhaps through a mechanism for balancing nucleotide pools.’
    • ‘This clearly indicates that the stems are primarily stabilized by the quartet-cation interactions, which are very similar for inosine and guanosine due to close similarity in their electronic structures.’
    • ‘It is a methyl guanine which fools the virus into ‘thinking’ it is a cyclic sugar guanosine it needs for growth.’
    • ‘Inosine is read as guanosine during translation and may alter the amino acid sequence of the encoded protein.’
    • ‘Standards (adenosine, cytidine, guanosine, pseudouridine, and uridine) were used to determine the optimal gradient conditions for separation.’


Early 20th century: from guanine, with the insertion of -ose.