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  • Title: Messenger RNA structure participating in the initiation of synthesis of cucumber mosaic virus coat protein.
    Author: Hidaka S, Tsunasawa S, Yoon J, Narita K, Takanami Y, Kubo S, Miura K.
    Journal: J Biochem; 1985 Jan; 97(1):161-71. PubMed ID: 3997790.
    Abstract:
    The sequence of the 5'-terminal 106 nucleotides of cucumber mosaic virus (strain Y) RNA 4, the mRNA coding for viral coat protein, has been determined. The first AUG was located at 77 nucleotides from the 5'-terminus and was confirmed to be an initiation codon by analysis of the N-terminal amino acid sequence of the protein. The nucleotide sequence (positions 77-106) beyond the AUG codon predicted the sequence of ten amino acids corresponding to the N-terminal region of the protein, which exactly matched the determined amino acid sequence containing an acetyl methionine as the N-terminal amino acid. The distance of the initiation codon AUG from the cap structure was 76 nucleotides and the longest among the mRNAs for coat protein of plant viruses so far reported (9-36 nucleotides). This noncoding region is rich in U residues (40%) and the number of G residues (21 nucleotides) is the largest among these mRNAs (usually 1 or 2 residues). A possible secondary structure is postulated for the region, which might be implicated in efficient translation of the RNA 4 in vivo.
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