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  • Title: Comparison of the polymerases (L genes) of spring viremia of carp virus and infectious hematopoietic necrosis virus.
    Author: Björklund HV, Emmenegger EJ, Kurath G.
    Journal: Vet Res; 1995; 26(5-6):394-8. PubMed ID: 8581012.
    Abstract:
    We have determined the partial nucleotide sequences of the polymerase genes of the fish rhabdoviruses, spring viremia of carp virus (SVCV) and infectious hematopoietic necrosis virus (IHNV). At this point we have deduced the amino acid sequences and analysed the first 1,400 amino acids comprising two thirds of the polymerase genes of SVCV and IHNV. We have compared sequence similarities of SVCV and IHNV polymerases with other rhabdovirus and paramyxovirus polymerases. The SVCV polymerase showed the closest relationship with the vesicular stomatitis virus polymerases and also shared significant sequence identity with the polymerase of rabies virus. Other rhabdovirus and paramyxovirus polymerases showed lower sequences identities with the SVCV polymerase. The IHNV polymerase shared a relatively low amino acid sequence identity with the rabies virus polymerase, and similar low identities with other rhabdovirus and paramyxovirus polymerases. Several domains of various lengths were conserved in the virus polymerases included in this study. These domains were less conserved in the IHNV polymerase than in the SVCV polymerase, and some of the domains present in the other polymerases were not identified in the IHNV. These preliminary results indicate that SVCV is closely related to mammalian vesiculoviruses and that IHNV may be only distantly related to mammalian lyssa and vesiculotype rhabdoviruses.
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