the 7-methylguanylic acid residue confronting the 5'-terminal nucleotide of mrna through two pyrophosphate linkages was completely removed by tobacco pyrophosphatase from mrnas of cytoplasmic polyhedrosis virus , tobacco mosaic virus ( viral rna ) , and globin without any scission in the inner part of the rna chain .
C0035736
viral rna
C0035668
rna