[Synthesis of a full-length DNA copy of the hemagglutinin gene of the the influenza virus A H1N1 subtype, its cloning and primary structure].

Full-length DNA-copy of hemagglutinin gene RNA of influenza A virus strain A/Leningrad/54/1 was synthesized and cloned in E. coli plasmid pBR 327. Its primary structure was determined by a modified Maxam - Gilbert procedure. The nucleotide sequence of this gene was compared with sequences of analogous genes of influenza strains A/USSR/90/77 and A/PR/8/34. An addition of one nucleotide in non-translated region was found in the former.