Archaeosine is a modified ribonucleoside found in archaeal transfer RNA, specifically at position 15 of the dihydrouridine loop. It features a 7-formamidino-7-deazaguanine nucleobase and is notable for being a post-transcriptional modification unique to archaea, not occurring in bacterial or eukaryotic tRNA.
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CAS 148608-52-0
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