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Mol Cell Biol. 1987 April; 7(4): 1572-1575

Unequal distribution of N6-methyladenosine in influenza virus mRNAs.

ABSTRACT

Influenza virus mRNA is posttranscriptionally methylated at internal adenosine residues to form N6-methyladenosine (m6A). It has been previously shown that there is an average of three m6A residues per influenza virus mRNA (R. M. Krug, M. A. Morgan, and A. J. Shatkin, J. Virol. 20:45-53, 1976). To determine the distribution of m6A in the different influenza virus mRNAs, we purified six of the mRNAs by hybrid selection, digested them with nuclease, and determined their methylation patterns by high-pressure liquid chromatography. The amount of m6A in the different mRNAs varied from one in matrix to eight in hemagglutinin.

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