[Primary structure of the full-size DNA copy of the influenza virus A/Kiev/59/79 (H1N1) PB1 gene protein].

Nucleotide sequence of the A/Kiev/59/79 influenza virus PB1 gene is reported, thus completing the full-genome primary structure of the recombinant between the virus and laboratory strain A/PR/8/34. The parental strain A/Kiev/59/79 (H1N1) is, in turn, shown to be a natural reassortant inheriting its genes of polymerase complex (PB1, PB2, NP and, in all probability, PA) from contemporary H3N2 influenza virus strains.