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putative 7-cyano-7-deazaguanosine (preQ0) biosynthesis protein QueE, clostridial Members of this radical SAM domain protein family appear to be the Clostridial form of the queuosine biosynthesis protein QueE. QueE is involved in making preQ0 (7-cyano-7-deazaquanine), a precursor of both the bacterial/eukaryotic modified tRNA base queuosine and the archaeal modified base archaeosine. Members occur in preQ0 operons species that lack members of related protein family TIGR03365. [Protein synthesis, tRNA and rRNA base modification]
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