by analyzing the pattern of appearance of cat activity and the distribution of the s19-cat mrna between polysomes and messenger ribonucleoproteins , it was concluded that the 35-nucleotide-long 5 ' untranslated region of the s19 mrna is able to confer to the fused s19-cat mrna the translational behavior typical of ribosomal proteins during xenopus embryo development .
C1335641
s19
C1519614
translational