Cap-independent translation sequences derived from barley yellow dwarf virus

摘要

The present invention provides a method of increasing the production of a protein translated from an uncapped eukaryotic messenger ribonucleic acid (mRNA), comprising the steps of: selecting a nucleotide sequence encoding a protein to be expressed; joining nucleotides 1-168 of the barley yellow dwarf virus RNA, PAV serotype to the 5' untranslated region of said uncapped mRNA, said nucleotides 1-168 comprising the 5' untranslated region plus first 27 nucleotides of the open reading frame of the barley yellow dwarf virus RNA; linking nucleotides 4513-5677 of the barley yellow dwarf virus RNA, PAV serotype, to the 3' untranslated region of said uncapped mRNA; and expressing the protein. Also provided is a DNA molecule which comprises: (a) a promoter region which functions in plant cells to cause the production of an RNA sequence, which is operably linked to (b) a 5' untranslated region including a 5' translation enhancing segment, said 5' translation enhancing segment comprising nucleotides 1-168 of the barley yellow dwarf virus RNA, PAV serotype, said nucleotides 1-168 encompassing the 5' untranslated region plus first 27 nucleotides of the open reading frame of the barley yellow dwarf virus RNA; (c) a coding sequence, wherein said coding sequence is heterologous to said 5' untranslated region, which is operably linked to (d) a 3' untranslated region that functions in plant cells to cause the termination of transcription, said 3' untranslated region comprising nucleotides 4513-5677 of the barley yellow dwarf virus RNA.