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J Virol. 1975 April; 15(4): 733-738

Structural proteins of two salmonid rhabdoviruses.

ABSTRACT

Purified infectious hematopoietic necrosis (IHN) virus and the virus of haemorrhagic septicaemia (VHS) (Egtved virus) each contain five structural proteins which were designated L, G, N, M-1, and M-2. The IHN viral polypeptides have molecular weights estimated to be 157,000, 72,000, 40,000, 25,000 and 20,000, respectively, whereas those of VHS viral polypeptides are estimated to be 157,000 74,000, 41,000, 21,500, and 19,000, respectively. The carbohydrate composition of the glycoprotein (G) was confirmed by demonstrating selective incorporation of [3H]glucosamine into the designated G protein of both viruses. Phosphoproteins were identified by incorporation of [32P]orthophosphate into the N and M-1 proteins of IHN virus and into the N protein of VHS virus. The glycoprotein of each virus was selectively solubilized by treatment with Triton X-100 in low salt buffer, whereas the M-1, and M-2 proteins along with the G protein were solubilized by Ttition X-100 in 0.43 M NaCl. The protein composition of the salmonid rhabdoviruses resembles that of the rabies virus group more closely than the vesicular stomatitis virus group.

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