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近年来,已从分子牛物学水平对乙型流感病毒(IBV)各蛋白亚单位的分子结构、IBV,生物学属性的分子基础等进行了深入的研究。尽管同甲型流感病毒相比较,对IBV的研究仍相对很少,但已能从其中获得对IBV更清楚的认识。 IBV的基因组及其所编码的多肽 IBV核酸为单股负链RNA,由8个节段组成。各RNA节段均作为单一的顺反子而各自编码其特异的多肽。它们是:RNA第r节段编码多聚酶2或多聚酶3(RNA_1-PB_2或PA),RNA_2-多聚酶1(PB_1),或RNA_3-PB_2或PA,RNA_4-血凝
In recent years, the molecular structure of IBV subunits, IBV, and the molecular basis of biological properties have been studied in detail at the level of molecular biology. Although there is still relatively little research on IBV compared to the Influenza A virus, a clear understanding of IBV has been obtained. The genome of IBV and its encoded polypeptide The IBV nucleic acid is a single-stranded minus-strand RNA consisting of 8 segments. Each RNA segment encodes its specific polypeptide as a single cistron. They are: RNA r segment encoding polymerase 2 or polymerase 3 (RNA_1-PB_2 or PA), RNA_2-polymerase 1 (PB_1), or RNA_3-PB_2 or PA, RNA_4-hemagglutination