Specific fluorescent labeling of 7-(aminomethyl)-7-deazaguanosine located in the anticodon of tRNATyr isolated from E. coli mutant.

AUTOR(ES)
RESUMO

Under-modified E. coli tRNATyr that contains 7-(aminomethyl)-7-deazaguanosine in place of Q nucleoside can be chemically modified by dansyl chloride under neutral conditions. Fluorescent labelling specifically occurred only in the 7-(aminomethyl)-7-deazaguanine moiety. The modified tRNATyr was found to be active both in aminoacylation and in binding to ribosomes.

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