f Structural Characteristics of Nairoviruses (Genus Nairovirus, Bunyaviridae)
- Authors: John P. M. Clerx, Jordi Casals, David H. L. Bishop
- J. Gen. Virol., July 1981 55: 165-178, doi: 10.1099/0022-1317-55-1-165
- Subject: Animal
- Published Online:
Viruses from six antigenic groups of arthropod-borne viruses [Crimean-Congo haemorrhagic fever (CCHF), Nairobi sheep disease (NSD), Qalyub (QYB), Sakhalin (SAK), Dera Ghazi Khan (DGK) and Hughes (HUG) serogroups], some previously categorized as bunyavirus-like viruses and others previously ungrouped, have recently been assembled by serological analyses into a new genus of viruses (Nairovirus genus) in the Bunyaviridae. Molecular studies of the virion RNA and viral polypeptides have been undertaken with representative members of the different serogroups [Hazara (HAZ) and Congo (CON) viruses, CCHF group; Dugbe (DUG) virus, NSD group; QYB, Omo and Bandia (BDA) viruses, QYB group; Avalon (AVA) virus, SAK group; DGK and Abu Mina (AM) viruses, DGK group; and HUG virus, HUG group]. In agreement with a recent study of QYB virus and in part agreement with an earlier report on DUG virus, the results of these molecular analyses indicate that nairoviruses have: (i) three virion RNA species (large, L, medium, M, and small, S) with apparent mol. wt. of 4.1 × 106 to 4.9 × 106, 1.5 × 106 to 1.9 × 106 and 0.6 × 106 to 0.7 × 106 respectively; (ii) a 48 × 103 to 54 × 103 mol. wt. nucleocapsid (N) polypeptide; and (iii) two external glycopolypeptides, 72 × 103 to 84 × 103 mol. wt. (G1) and 30 × 103 to 40 × 103 mol. wt. (G2). Cross-immune precipitation analyses have confirmed that viruses in the Nairovirus genus share antigenic determinants and are antigenically distinct from representative members of the Bunyavirus, Phlebovirus and Uukuvirus genera (Bunyaviridae).
© Society for General Microbiology 1981 | Published by the Microbiology Society
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