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J Biochem. 1986 Apr;99(4):1169-80.

The complete nucleotide sequence of the group II RNA coliphage GA.


The complete nucleotide sequence of the RNA coliphage GA, a group II phage, is presented. The entire genome comprises 3466 bases. Three large open reading frames were identified, which correspond to the maturation protein gene (390 amino acids), the coat protein gene (129 amino acids) and the replicase beta-subunit protein gene (531 amino acids). In addition, untranslated regions occur at the 5' (135 bases) and 3' (122 bases) ends of the molecule. Two intercistronic untranslated regions occur between the cistrons for the maturation and coat proteins, and between the coat and beta-subunit proteins. We have compared the nucleotide sequence of GA RNA with the published sequence of MS2 RNA, and show that they are related. The comparative structures of two important regulatory regions are presented; the coat protein binding site which is involved in translational repression of the replicase beta-subunit protein gene, and a hairpin in a region proximal to the lysis protein gene.

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