Abstract

The UV absorption of the virions of mosquito Aedes flavescens iridovirus (AfIV) is shown to be due to the absorption of all viral components (capsid proteins, lipids and DNA). The AfIV virion fluorescence at room temperature is caused by the fluorescence of capsid proteins, while at low temperatures (5 K, 77 K) it is related to the fluorescence of both capsid proteins and viral DNA. The analysis of low-temperature virion phosphorescence makes it possible to identify the type of nucleic acid inside the virus. The results of the AfIV DNA analysis as well as determination of the lipid composition of virion shell are reported. The amino acid composition of the major capsid protein of the iridovirus is determined by means of sequencing the DNA fragment that is a part of the protein gene.

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