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2.4.2.48
evolution
biogenetic relationship of queuosine and archaeosine, overview. The elements necessary for tRNA recognition by the enzyme are not unique to archaeal tRNA
719802
2.4.2.48
metabolism
GTP is apparently the primary precursor in the biosynthesis of queuosine, which in a series of steps is converted to 7-(cyano)-7-deazaguanine, i.e. preQ0. PreQ0 is then reduced to PreQ1, and preQ1 is subsequently inserted into the tRNA by the enzyme TGT in a transglycosylation reaction in which the genetically encoded base guanine is eliminated
719802
2.4.2.48
more
the nature of the temperature dependence is consistent with a requirement for some degree of tRNA tertiary structure in order for recognition by the enzyme to occur
719802
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