queuineの例文

• The nucleoside of queuine is queuosine.
• Queuine is involved in the anticodon sequence of certain wobble position in the tRNA of Asparagine, Aspartic acid, Histidine, and Tyrosine.
• Proteins downstream of the preQ 1 riboswitch biosynthesize a nucleobase called queuine and a nucleoside queuosine are inhibited by the activation of the preQ1 riboswitch.
• In bacteria the enzyme tRNA-guanine transglycosylase ( TGT ) catalyzes the swap of a guanine in position 34 of the tRNA with queuine into the first anitcodon position.
• Queuine is not found in the tRNA of archaea; however, a related 7-deazaguanine derivative, the nucleoside of which is archaeosine, occurs in different tRNA position, the dihydrouridine loop, and in tRNAs with more specificities.