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J Virol. 1979 August; 31(2): 398-407

RNA-directed DNA synthesis in Moloney murine leukemia virus: interaction between the primer tRNA and the genome RNA.

ABSTRACT

Initiation of RNA-directed DNA synthesis in virions of Moloney murine leukemia virus requires a cellular tRNAPro as primer. The site(s) on the Moloney murine leukemia virus genome RNA at which functional primer molecules are bound and at which purified tRNAPro hybridizes has been located near (within 20%) the 5' end of the genome. A relatively stable duplex (temperature at which 50% dissociation has occurred, 76 degrees C) is formed between the amino acid acceptor stem of the tRNAPro and a complementary sequence in the Moloney murine leukemia virus 35S RNA. The interaction involves 19 base pairs, extending from the penultimate nucleotide at the 3' end of the tRNAPro but apparently not including the 3'-terminal adenosine residue. In most respects, the interaction between primer and template in Moloney murine leukemia virus parallels the situation in the avian leukosis-sarcoma viruses.

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