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Nucleotide sequence of the M genome segment of hemorrhagic fever with renal syndrome virus strain B-1.

The medium (M) segments of the genomic RNA of Hantaan virus (HTN) (1), Nephropathia epidemica virus (NEV) (2) and Sapporo rat virus (SR-I1) (3), each of which belongs to different serotypes of Hantavirus genus (4), have been cloned and sequenced. Here, we presented the nucleotide sequence of the M segment of Biken 1 virus (B-1), whose serotype is the same as that of SR-1 1. The cDNA was cloned and sequenced by the use of the cassette method of PCR that we have recently devised (5). The M segment determined consists of 3616 nucleotides and the cDNA has a single large open reading frame (ORF) capable to code a polypeptide of 1133 amino acids. Comparison of the M segments of B-I and SR-11 strains revealed a 96% homology in the overall nucleotide sequence and a 97% homology in the nucleotide sequence of ORF. The homology of the deduced amino acid sequence of GI envelope glycoprotein is 98% between B-I and SR-1I and that of G2 is